Conferences Archive

2014


Terrestrial Planets: Evolution Through Time

Date: Tuesday, January 22, 2008 — Friday, January 25, 2008

Location: Physical Research Laboratory, Ahmedabad, India

Web: http://www.prl.res.in/~djconf08/

Organisers: S.V.S. Murty (murty@prl.res.in), S.K. Singh (sunil@prl.res.in), J.S. Ray (jsray@prl.res.in)

The aim of the conference is to provide a forum for discussion on the present status and future perspectives in utilising modern geochemical and isotope techniques to understand the origin and evolution of the solar system, the chronology and causes of major events on Earth, past climate, and dynamics of various reservoirs in Earth. PRL is actively engaged in all these areas of research for the past several decades and the conference is organised as a part of its Diamond Jubilee Celebrations.

The main themes of the conference will be:

  1. Early solar system and Planetary processes
  2. Evolution of the Indian Plate: Precambrian to Recent
  3. Palaeoclimate and Palaeoenvironment
  4. Tectonics-Erosion-Climate and Carbon cycle

The conference format will comprise plenary addresses (covering broad aspects of each theme) and invited talks. A selected number of contributed papers will be scheduled for oral presentations and the other contributions will be put up as posters. The language of the conference shall be English.



European Geophysical Union (EGU) General Assembly

Date: Monday, March 24, 2008 — Friday, March 28, 2008

 

Location: Austria Center Vienna, Vienna, Austria

Web: http://meetings.copernicus.org/egu2008/

Includes the following sessions:

Session GMPV27 Large Igneous Provinces and their impact on life and environment

 Convenors: S. Self (stephen.self@open.ac.uk), A. Chenet (alchenet@ipgp.jussieu.fr)

Evidence of synchronism between the formation of many large igneous provinces (LIPs) emplacement and major rapid environmental and biotic crises has led us to consider a causal relationship between these events. The testing of such a hypothesis requires a multidisciplinary approach to studies of the formation of LIPs and the consequences on life and the environment. We invite papers on the topic of the generation and eruptions of LIPs, including both basaltic and silicic examples, as well as studies of the factors that control the accumulation of large, eruptible magma bodies, the evolution and dynamics of such bodies (including magmatic volatile concentrations), the volcanology of large volume eruptions (effusive and explosive). Field-based studies on the climatic and environmental impact of large eruptions and atmospheric model-based assessments of the climatic and environmental impact of large igneous province eruptions are also welcome. Finally, palaeontological studies of the impact of volcanism on flora and fauna and cross-disciplinary studies combining evidence from the ocean sedimentary and land records are encouraged.

Session GMPV30 Geochronology of igneous processes

Convenors: F. Costa (fcosta@ija.csic.es), P. Renne (prenne@bgc.org)

Single crystal Ar/Ar dating and ion microprobe U-Th/Pb multiple age determination in a single crystal show that magma residence times may vary from a few thousand years to more than several hundred thousands of years. Complementary time information obtained from modelling the re-equilibration of the chemical zoning of crystals shows that magmatic assimilation or magma mixing can be much shorter, a few decades or less. This session wants to expose the recent geochronological findings on magmatic systems and move towards establishing a hierarchy of processes according to their duration and the size of the system. We welcome abstracts that use any geochronological tool to constrain the rates of igneous processes. Topics may range from the time involved for the construction of a large igneous province or plutonic complex, the rates of magmatic differentiation, to the duration of processes necessary for triggering a single eruption.

Session IS20 Plume-like instabilities in the mantle – hotspots, wetspots or displaced material from the transition zone?

Convenors: U. Archauer (ulrich.achauer@eost.u-strasbg.fr), M. Wilson (m.wilson@earth.leeds.ac.uk)

This session brings together an interdisciplinary group of researchers interested in the problem of how convective instabilities in the upper mantle originate and what their relationship is to magma generation processes (“hotspots”) and lithosphere geodynamics. In recent years a number of high-resolution integrated seismic projects across regions of Tertiary to recent volcanism in central Europe have, in collaboration with detailed geochemical studies, demonstrated the existence of a number of small-scale, almost cylindrical, upwellings of low-velocity mantle material (~ 100-150 km in diameter). These “diapiric instabilities” have some characteristics in common with those of “classical” mantle plumes (e.g. thermal and geochemical anomalies, associated basement uplift), but a number of distinct differences:

1. They are much smaller in size than classical plumes
2. They do not appear to “have” a plume head
3. They appear to originate in the Transition Zone (410-660 km depth)

The existence of these small-scale plume structures suggests that there might exist a number of different classes of mantle plumes, originating from different depths within the mantle (e.g. the Transition Zone, the lower mantle or the CMB). So far such structures have only been postulated to exist beneath the European continent (e.g. the Massif Central, the Eifel and possibly the Bohemian Massif), but it is highly likely that similar structures exist beneath other continents.

The following observations can be made concerning the origin of these upper mantle plumes:

They are small-scale convective instabilities within the upper mantle beneath Europe which appear to originate in the Transition Zone (410-660km depth)

There is a strong correlation between the location of the “upwellings” and lithospheric architecture – suggesting some form of top-down control.
· The upwellings appear to be concentrated around the edge of a region of subducted slabs at the base of the upper mantle.

Basaltic magmas derived by decompression partial melting of the upwelling mantle “diapirs” have the distinctive geochemical signature of a common mantle source component – the European Asthenospheric Reservoir (EAR). The EAR could be the product of outflow from one or more lower mantle plumes.

The location of these upper mantle instabilities could be controlled by a number of factors, such as:

  • The regional stress field
  • Inherited lithospheric structures (e.g. sutures and weak zones)
  • The upwelling of hot or volatile-rich material from the deep mantle
  • Dynamic mantle upwelling in response to delamination of subducted (or thickened continental) lithosphere – so-called “splash plumes”

In our session, we are particularily interested in presentations which could broaden out PLUME to other areas of the world where the Transition Zone (410-660 km) is seismically fast and might also be a "slab graveyard". We welcome especially presentations of researchers working on the mantle Transition Zone worldwide - particularly if they can see a link between recent surface volcanism and seismically fast materials in the TZ. Another area of particular interest does involve researchers interested in high pressure metamorphism of subducted oceanic crust and sediments - in the context of how much water might be recycled (in hydrous minerals) into the TZ.



Asia Oceania Geosciences Society (AOGS) 5th Annual Assembly

Date: Monday, June 16, 2008 — Friday, June 20, 2008

Location: Busan, South Korea

Web: http://www.asiaoceania.org/society/index.asp

Includes the following session:

Session SE59 Post-collision magmatism: plumes versus top-down plate tectonics?

Convenors: M. Flower (flower@uic.edu), N. Hoang (ng.hoang@gmail.com), J. Deng (dengjinfu@21cn.com), X. Mo (mxx@sky.cugb.edu.cn)

As subduction gives way to plate collision, magmatic activity tends to progress from HFSE-depleted calc-alkaline to potassic and ultrapotassic types. These are succeeded by voluminous OIB-like basalts, marking post-collision transtensional ‘nodes’ and possibly reflecting perturbations of ductile sublithospheric mantle. These late-stage magmas are mostly non-potassic and rich in HFSE and include both tholeiites and variably SiO2-undersaturated types. Examples – linked in space and time to recent and ongoing Tethyan collisions – include those in western and eastern Europe, eastern and southeastern Asia, and the Levant and northern Africa. Rarely, strongly potassic types HFSE-rich basalts appear, distinct from the shoshonites and lamproites commonly associated with collisions, examples appearing in NE China, Central Spain, and the western Germany. Geochemical and geophysical studies have led to robust debates, for example, as to whether the basalts reflect deep-sourced plumes or the effects of plate-induced upper mantle displacement. This session will be an opportunity to discuss current models pertaining to subcontinental mantle flow fields in relation to intraplate basalt genesis.



Goldschmidt Conference: From Sky to Sea

Date: Sunday, July 13, 2008 — Friday, July 18, 2008

Location: University of British Columbia, Vancouver, Canada

Web: http://www.goldschmidt2008.org/

Provisionally proposed themes include Early Earth, Continental Crustal Evolution, Mantle Dynamics, Mantle Geochemistry and Magmatic Processes.

Conference-related fieldtrips include:

Wrangellia flood basalts on Vancouver Island: an accreted Late Triassic oceanic large igneous province

Leaders: A. Greene (agreene@eos.ubc.ca), G. Nixon, N. Massey, J. Scoates

Date: Post-conference; July 18-21



33rd International Geological Congress

Date: Wednesday, August 6, 2008 — Thursday, August 14, 2008

Location: Oslo, Norway

Web: http://www.33igc.org/coco

Includes the following sessions:

Session MPI-04 Mafic dyke swarms: a global perspective

Convenors: R. Srivastava (rajeshgeolbhu@gmail.com), W. Bleeker (wbleeker@nrcan.gc.ca), R. Ernst (richard.ernst@ernstgeosciences.com)

Because of great depth and lateral extent, mafic dyke swarms provide the most complete record of short-lived, mantle-generated magmatic events through time and space. Our increasing ability to date mafic dyke rocks precisely has greatly enhanced their importance as high-resolution markers in time. Collectively, the record of mafic dyke swarms provides information on “the pulse of the Earth” - that is, the rhythm of mantle melting events through time, from minor rift-related events, to the largest known igneous events (LIPs) on the planet extruding millions of km3 of basaltic melt over short intervals of time (<1 my). Linked with precise ages, mafic dykes swarms become an unparalleled source of diverse and high-quality information: on tectonics and secular evolution, age and location of igneous centres, palaeostress directions, strain gradients, key palaeomagnetic poles, palaeo-intensities of the core dynamo, plume frequency, mantle sources, and much more. Successive short-lived dyke events define “bar codes” that identify a piece of crust and its original “nearest neighbours”. Thus they are the key to palaeogeographic reconstructions. “Bar coding” the geological record will allow, in principle, a full reconstruction of Earth’s palaeogeography, back to ca. 2.6 Ga. This session will bring together all those interested in these and other aspects of mafic dyke swarms.

Session MPI-05 Large Igneous Provinces: initiation, evolution and origin

Convenors: L. Vierect-Goette (Lothar.Viereck-Goette@uni-jena.de), S. Planke (planke@vbpr.no)

The events during initiation of some mafic Large Igneous Provinces (North Atlantic, Ferrar, and Karoo Igneous Province) were studied recently, with spectacular results and new (?) concepts. In all cases we see that early emplacement occurred as sills in a shallow crustal environment with abundant magma-wet sediment interaction and diatreme formation. However, this initial character may be due to the local geology of young unconsolidated sediments overlying crystalline basement. We can neither identify an initial phase of small volume magma emplacement, nor a regular early involvement of molten continental crust. In the Ferrar Province, we recognize that the magmas belong to the tholeiitic differentiation series with the early intrusive andesitic magmas being more evolved than the later plateau forming basaltic andesitic lavas. Which of these observations are of general relevance for LIP formation and are crucial pieces in the big puzzle? How are Silicic Large Igneous Provinces initiated, do they start with a mafic initial phase? We invite any geoscientist working on the topic of initiation of mafic or silicic LIP to present his/her new data from other LIPs on earth in order to gain a more precise understanding of the early processes during production, evolution and emplacement of such catastrophic volumes of magma.

Session MPE-02 Experimental petrology and the generation of plume magmas

Convenors: G. Sen (seng@fiu.edu), C. Hieronymus (christoph.hieronymus@geo.uu.se)

Mantle plumes are believed to be the underlying cause of hotspot volcanism. Wherever plumes originate, there is broad agreement that they sample a volume of the mantle that is distinct from the shallow source region of passively spreading mid-ocean ridges. The aim of petrology research of plume melting is to constrain the pressure and temperature conditions of melting and the source composition in order to improve our understanding of plumes and the evolution and dynamics of the mantle. The mantle is made up of various components, including remnant primordial mantle, depleted mantle formed as the residue of continental differentiation, subducted oceanic crust and lithosphere, and smaller volumes of sediments and continental lithosphere. Which of these reservoirs are present in the plumes, and to what degree are they represented in the melts? Do different plumes sample different reservoirs, or do the varying chemical signatures of plumes derive from differences in the melting dynamics? Are heterogeneities spread out randomly as blobs or filaments, are they stretched out as strings along the conduit, or are plumes radially or laterally zoned? Can the spatial and secular variability of plume lavas help determine the pattern of plume heterogeneity? We invite all contributions that apply petrology to melting at hotspots, but encourage a focus on the global perspective. We also welcome petrological evaluations of alternatives to the plume hypothesis.

Session MPV-03 Flood basalt volcanism and stratigraphy

Convenors: T. Thordarson (thor.thordarson@ed.ac.uk), D. Haldar (haldar2115@yahoo.co.uk)

Over the last two decades stratigraphic and volcanological research has revolutionised our views of LIP construction and the mechanisms of the eruption that are responsible for their formation. The purpose of this symposium is to bring together research that sheds light on shallow subsurface and surface processes involved in construction of flood basalt provinces of all ages as well as their potential climatic and environmental impacts. The symposium will focus on the following areas of research: upper crustal plumbing systems of LIPs; geochronology of flood basalt successions; volcanic, petrochemical and palaeomagnetic stratigraphy of LIPs; eruption styles, mechanisms and lava emplacement modes at LIPs; gas fluxes from flood basalt eruptions; potential climatic and environmental impacts of flood basalt eruptions and the link to mass extinctions.

Session EUR-08 North Atlantic Igneous Province stripped: origin, magmatic activity, crustal processes and plate kinematics

Convenors: M. Ganerød (morgan.ganerod@ngu.no), S. Rousse (sonia.rousse@ngu.no), W. Roest (walter.roest@ifremer.fr)

The North Atlantic Igneous Province (NAIP) which includes the UK, Ireland, the Faeroes, Greenland and the West Greenland-Baffin corridor is one of several well-known Large Igneous Provinces (LIP) temporally correlated with continental break-up. The NAIP likely owes its origin to the Iceland plume and broadly corresponds in time to the initiation of seafloor spreading in the NE Atlantic. It is also believed to have triggered global climate changes, with knock-on effects for the biosphere and sedimentary facies. In the last few decades, the Atlantic-Arctic margin has received much attention, partly as a result of hydrocarbon exploration, leading to a rapidly expanding, onshore and offshore geological and geophysical data set. This provides a unique setting to derive new insights into causal links between timing and style of magma emplacement, crustal processes, plume arrival, plate kinematics, uplift, subsidence and the evolution of sedimentary basins. In this session we aim to paint a more comprehensive picture of the NAIP, the complex thermal history of the North Atlantic region and its role in shaping the North Atlantic geology. We welcome contributions from all disciplines that will further and challenge our knowledge of the Mid-Cretaceous to present North Atlantic magmatism, its causes before, during and after continental break-up.



Large Meteorite Impacts and Planetary Evolution IV

Date: Sunday, August 17, 2008 — Thursday, August 21, 2008

Location: University of the Witwatersrand, Vredefort Dome, South Africa

Web: http://www.lpi.usra.edu/meetings/lmi2008/

Convenors: R. Gibson (roger.gibson@wits.ac.za), U. Reimold



International Association of Volcanology and Chemistry of the Earth’s Interior (IAVCEI) General Assembly

Date: Sunday, August 17, 2008 — Friday, August 22, 2008

Location: University of Iceland, Reykjavik, Iceland

Web: http://www.iavcei.org/IAVCEI.htm

Includes the following sessions:

Mantle plumes and plume-ridge interactions

Convenors: B. Bransdóttir (bryndis@raunvis.hi.is), R. Trønnes (r.g.tronnes@nhm.uio.no)

This session is dedicated to geodynamic issues, including mantle convection, the origin and evolution of plumes, mantle melting, melt transport and along-axis melt variability. We seek contributions from all areas of research on mantle plumes, plate-spreading, V-shaped ridges, seamounts, large igneous provinces and orogenic episodes.

This session will focus on:

  • Seismic tomography of the mantle aiming at imaging mantle plumes
  • Studies of local and regional variations in the depth of seismic discontinuities
  • Mineral physics constraints on mantle density as a function of pressure, temperature and composition (compressibility and thermal expansivity)
  • Numerical modelling and fluid dynamic experiments on mantle convection and plume generation
  • Geophysical features of the oceanic and continental crust, lithosphere and asthenosphere
  • Bathymetry and crustal thickness variation, including V-shaped ridges, extent of lateral mantle flow and along-axis variation of melt chemistry
  • Geochemical and geophysical constraints on plume-ridge interactions, rift jumps and crustal accretion processes, NE Atlantic and elsewhere
  • Geochemical constraints on progressive melting of fertile and refractory mantle sources, plume-related versus ambient asthenosphere or lithosphere

Intraplate volcanism – continents and oceans, from scoria cones to large igneous provinces

Convenors: G. Valentine (gav4@buffalo.edu), A. Kerr (kerra@cardiff.ac.uk)

Intraplate volcanism provides key insights into magma sources and magmatic processes. This volcanism encompasses a wide array of eruptive styles and products, and, on the continents, is an important component of volcanic risk in some areas. This session will combine both the continental and ocean floor perspectives on the nature of ancient and modern intraplate volcanic activity, from source through eruption, on a wide range of scales from small localised eruptions to large igneous provinces.

This session will focus on:

  • Asthenospheric vs. lithospheric sources of magmas.
  • Time-volume behaviour of intraplate volcanic systems
  • Interplay between regional tectonics and volcanism
  • Magma chamber processes
  • Links between volcanological features and deep plumbing
  • Factors controlling eruptive style

Frontiers in large igneous provinces research

Convenors: I. Campbell (ian.campbell@anu.edu.au), R. Ernst (richard.ernst@ernstgeosciences.com)

Over the last fifteen years it has become widely accepted that Large Igneous Provinces (LIPs) are produced by melting mantle plumes.  However the link between LIPs and mantle plumes has recently been challenged.  How confident are we that LIPs are produced by mantle plumes? Are there any aspects of LIPs that cannot be explained by the plume theory?  Are there viable alternative hypotheses? Are there some LIPs that are better explained by alternative models?

This session will focus on:

  • Implications of thermocompositional convection for LIPs.
  • Seismic imaging of plumes
  • Geochronology and eruption rates for LIPs
  • Correlation of Proterozoic LIPs (especially their dyke swarms) to test hypotheses of continental reconstruction.
  • Can hotspots move?
  • Advances in the geochemistry of LIPs
  • LIPs as the "pulse of the Earth"

Construction of large igneous provinces and mass extinctions

Convenors: A. Saunders (ads@le.ac.uk), T. Thordarson (thor.thordarson@ed.ac.uk), P. Wignall (p.wignall@see.leeds.ac.uk), S. Self (stephen.self@open.ac.uk), A. Harris (harris@higp.hawaii.edu)

Mass extinctions are global phenomena that represent some of the most dramatic events in the geological history and arguably no events have had more influence on evolution of life on Earth. They are generally thought to have lasted for <1 Myrs and the fact that they define all of our key geological boundaries is the best testimony of their significance. Despite ample research cause of mass extinctions is still one of the great outstanding questions in Geosciences. The synchronicity of mass extinctions and LIP volcanism in the Mesozoic and the Cenozoic has led many to postulate a causal link between the two events. However, the mechanism by which LIP volcanism may have induced mass extinctions is still unclear and strongly debated. In this session we like to focus on the questions: 
Did LIP emplacement lead to dramatic environmental change?
Can LIP volcanism trigger mass extinctions and, if so, how?
The aim is to bring together research that sheds light on the potential climatic and environmental impacts of flood basalt volcanism and their link to mass extinctions via studies of LIP-related stratigraphy as well as shallow subsurface and surface processes involved in construction of LIPs.

The session will focus on:

  • Upper crustal plumbing systems of LIPs
  • Geochronology and stratigraphy of LIPs
  • Eruption styles, mechanisms and lava emplacement modes at LIPs
  • Gas fluxes from LIPs and injection into the atmosphere
  • Potential climatic and environmental impacts of flood lava eruptions
  • Chronological and causal relationships between LIPs and mass extinctions


Field Workshop to Ardnamurchan: ‘A Tribute to the Life and Works of J.E. Richey (1886-1968) – 40 years on’

Date: Friday, September 5, 2008 — Wednesday, September 10, 2008

A field meeting of the Volcanic and Magmatic Studies Group

Location: Ardnamurchan, Scotland

Web: http://www.vmsg.org.uk/

Leaders: D. Brown (d.j.brown@sheffield.ac.uk), B. O’Driscoll

Includes the famous ring complexes, layered intrusions, cone sheets, magma mixing, mass flow deposits, megablocks, flood basalts, and a distillery visit!



Gondwana 13 Conference

Date: Sunday, September 14, 2008 — Monday, September 22, 2008

Location: Dali, Yunnan Province, China

Web: http://www.conferencenet.org/conference/GONDWANA.htm

Includes the following session:

Roles of mantle plumes/superplumes in supercontinent evolution

Convenors: Y. Xu (yigangxu@gig.ac.cn), K. Condie (kcondie@nmt.edu)

This session will focus on mantle plumes and large mantle upwellings and their role in the supercontinent cycle. Topics will include, but are not restricted to, 1) the role of descending slabs in generating mantle plumes in the D” layer; 2) geophysical models of mantle plume events through time and their relation to supercontinent formation and breakup; 3) the geologic record of mantle plume activity through time; 4) comparison of LIP and continental crust age spectra through time; 5) LIPs (including LIP-type greenstones) and their relation to mantle plumes through time; and 6) weak plumes and strong plumes: origin, source and possible role in supercontinent breakups. We encourage presentation of controversial papers that will generate lively discussion.



Volcanic and Magmatic Processes Study Group (VMSG) Annual Meeting

Date: Sunday, January 4, 2009 — Tuesday, January 6, 2009

Location: Bournemouth University, Bournemouth, UK

Web: http://www.bournemouth.ac.uk/conservation/conferences/vmsg/

Contact: Rebecca Dolling (rdolling@bournemouth.ac.uk)

Includes the following sessions:

Intraplate Magmatism

Chairs: Kathryn Goodenough (kmgo@bgs.ac.uk), Godfrey Fitton (godfrey.fitton@ed.ac.uk)

Ascent and Emplacement of Magmas

Chair: Carl Stevenson (c.t.stevenson@bham.ac.uk)



European Geophysical Union (EGU) General Assembly

Date: Sunday, April 19, 2009 — Friday, April 24, 2009

Location: Austria Center Vienna, Vienna, Austria

Web: http://meetings.copernicus.org/egu2009/index.html

Includes the following sessions:

Session GMPV1: Complex Processes in Magmatic and Volcanic Systems: Experiment, Theory and Modelling

Convenors: Paulo Papale (papale@dst.unipi.it), Ciro Del Negro, Donald Dingwell, Michael Manga

Magmatic and volcanic processes are being increasingly unveiled as long as theoretical models, numerical codes, and advanced experiments are developed and applied to a variety of test cases and conditions. Several aspects concerning the chemical and physical state and evolution of magmas before, during and after eruptions can now be understood, and complex processes can be described and predicted. At the same time, as long as our knowledge improves, new challenges emerge, requiring more sophisticated approaches and instruments. This session invites contributions focusing on advancements in experimental, theoretical, and numerical work aimed at describing any aspect of the complex processes characterizing magma evolution and eruption dynamics, including, but not restricted to, the followings: multicomponent chemical equilibria and kinetics, complex magma rheology, deep magma dynamics, magma chamber formation and dynamics, separation and dynamics of the gas phase, geothermal system chemistry and dynamics, crack formation and dyke injection, magma-rock interaction (either chemical or mechanical), magma ascent and fragmentation, volcanic conduit and vent dynamics, dynamics of lava fountains, strombolian eruptions, supersonic jets and volcanic plumes, generation and dynamics of lava flows and pyroclastic flows, etc. Constraints given to the above processes through a variety of techniques including analysis and inversion of geochemical and geophysical signals, analytical work on the eruption products, etc. are encouraged. Contributions either dealing with specific cases or presenting the results of parametric studies are welcome.



2009 Joint Assembly: The Meetings of the Americas

Date: Sunday, May 24, 2009 — Wednesday, May 27, 2009

Location: Toronto Convention Centre, Toronto, Canada

Web: http://www.jointassembly2009.ca/welcome_english.html

Includes the following sessions:

Session GA08: Frontiers in Precambrian Geodynamics

Convenors: Phil McCausland (pmccausl@uwo.ca), Richard Ernst (richard.ernst@ernstgeosciences.com), Wouter Bleeker (wbleeker@nrcan.gc.ca), Lauri Pesonen (lauri.pesonen@helsinki.fi)

The Precambrian Earth is increasingly being seen as a planet that is recognizably Earthlike, but one in which sometimes extreme circumstances prevailed. There is therefore great opportunity to understand fundamental physical aspects of the Earth’s geodynamic processes through investigating Precambrian events. This session calls for contributions on the Precambrian record of Earth’s paleogeodynamic evolution obtained through paleomagnetism, magmatic events, sedimentology, geochronology, geochemistry and isotope geochemistry as well as insights derived from theory and modeling. A central focus of this session is Earth's paleogeography through the Precambrian, as the ultimate record and ground truth against which to test our understanding of first-order geodynamic processes such as true polar wander (TPW) and supercontinental assembly and dispersal.

This session is convened in honour of the many Precambrian contributions of Henry Halls (U of Toronto), both as a researcher and as a mentor.

Session GA11: The Iapetus Plume Event and Ediacaran Palaeogeography

Convenors: Phil McCausland (pmccausl@uwo.ca), Henry Halls (henry.halls@utoronto.ca), Michael Higgins (michael_higgins@ugac.ca)

The Ediacaran Period, from ~615 to 543 Ma was a time of profound change for the Earth. It appears to have been a time of rapidly growing complexity in metazoan life and of extreme climates. A major tool for unravelling the paleogeographic context for these events should be paleomagnetism, yet it seems unusually difficult to resolve continental configurations during the Ediacaran. Paleomagnetic results available thus far imply apparent motions for some continents that are too rapid to be accomplished by plate tectonics, leading to proposals for large-scale True Polar Wander (TPW) during this period. The Iapetus Plume in eastern Laurentia has been invoked as a possible driver for TPW and also as a pinning point argument against TPW. This session brings together paleomagnetists, geochronologists, tectonicists and petrologists to focus on the Iapetus plume event, the enigmatic Laurentian paleomagnetic results obtained from Ediacaran units and the wider problem of Ediacaran paleogeography. Papers are solicited on any related aspect within the stated time frame, but special emphasis will be placed on understanding the timing, geochemistry and geodynamic features of the Iapetus plume that spawned the Grenville dyke swarm, the Sept Iles intrusive suite, and other alkali and kimberlitic units.

Session V07: Intraplate Volcanic Fields: From Source to Eruption and Techniques for Identifying Patterns of Behaviour

Convenors: Mandie Hintz (arl6@buffalo.edu), Sara Hanson-Hedgecock (sedjat@earthlink.net)

Continental intraplate volcanic fields are characterized by a wide array of eruptive styles and products that are widely distributed across the continents in a variety of tectonic regimes. These volcanic fields occur in virtually all tectonic environments, from extensional (Black Rock Volcanic Field, Utah, USA) to compressional (Michoacán-Guanajuato Volcanic Field, Mexico) and strike-slip (San Quintín Volcanic Field, Baja, Mexico). A field may span from several hundred km2 to more than several thousand km2 and may include anywhere from several volcanic vents to hundreds. This session is dedicated to increasing the fundamental understanding of the patterns of behavior in intraplate volcanic fields through field-based geologic, geophysical, and geochemical investigations. Also of interest are the development of analogue and mathematical models of magmatic, tectonic, and eruption processes, as well as the application of statistics and pattern recognition techniques to volcanic data processing. We hope that the contributions made to this session will aid in our understanding of intraplate source regions and augment our ability to forecast eruptive behavior to mitigate hazards.



Goldschmidt: Challenges to Our Volatile Planet

Date: Sunday, June 21, 2009 — Friday, June 26, 2009

Location: Congress Centre, Davos, Switzerland

Web: http://www.goldschmidt2009.org/index

Includes the following sessions:

Session 03b: Origin of Hotspots and Flood Basalts

Convenors: Nick Arndt (nicholas.arndt@ujf-grenoble.fr), Cinzia Farnetarni

The aim of this session is to provide a coherent view of thermal and thermochemical instabilities in the deep mantle and their evolution during mantle upwelling, and the petrological and tectonic processes that result in the formation and emplacement of magmas in oceanic islands and continental intraplate settings. Understanding these processes requires contributions from petrologists, geochemists, tectonicians and geophysicists. We invite contributions discussing the dynamics of the source regions of plumes and their mineralogical and chemical compositions, the melting processes and their control on magma compositions, the extent to which melting anomalies reflect excess fertility in the mantle rather than excess mantle temperatures, and finally, the interaction between magma and wall rocks during passage to the surface.

Session 04d: Magma Generation and Evolution and Global Tectonis – A Symposium in Honour of Peter J Wyllie for his Life-Long Contributions to Understanding How the Earth Works by means of Experimental Petrology

Convenors: Yaoling Niu (yaoling.niu@durham.ac.uk), Marjorie Wilson (m.wilson@earth.leeds.ac.uk), Ed Stolper (ems@expet.gps.caltech.edu), Hans Keppler (hans.keppler@uni-bayreuth.de)

Magma generation and evolution are the most effective mechanisms that have led to chemical differentiation of the earth through its history. Our current understanding of magmatism owes much to experimental petrology, including the more than 300 original research contributions by Peter Wyllie and his co-authors. Peter correctly recognized in early days the significance of volatiles in magma genesis in all geological environments. Remarkably, when the plate tectonics theory was still in its infancy, Peter effectively brought that theory to classrooms through his book "The Dynamic Earth", which lucidly explains why volcanoes occur where they do. This symposium honors Peter's contributions and brings together scientists from many parts of the world to discuss their new research on magma generation and evolution. Topics include observations, experimental petrology, igneous geochemistry, and modelling with emphasis on the use of petrology and geochemistry as a means to understanding the working of our planet.

Session 05b: What is the Evidence for Geochemical and Mass Transfer between Mantle and Crust and Back?

Convenors: Mihai Ducea (ducea@geo.arizona.edu), Julian Pearce (pearceja@cf.ac.uk)

Crustal growth can be represented as a box model in which material is transferred in both directions between mantle and crustal reservoirs. Understanding the rates and mechanisms of mass transfer between these reservoirs, and their changes with time, is a minimum requirement for developing a quantitative model of crustal growth. This session focuses on the evidence for these rates and mechanisms. In terms of crustal inputs, we are particularly interested in evidence for the magnitudes and compositions of crustal additions through mantle plume and volcanic arc activity. In terms of outputs, we are particularly interested in geochemical and geophysical evidence for crustal delamination and for the return of crustal materials to the deep mantle via subduction zones. We also encourage contributors to address some of the controversies in crustal growth, which might include the following. What is the role of adakitic and boninitic magmas in crustal growth? Which contributed more to crustal growth: – plumes or subduction? If crustal growth is episodic, what caused the episodicity? How and when does continental crust delaminate and what is the fate of delamination products? What do OIBs tell us about crust-to-mantle transfer and its evolution with time? What fraction of subducted crustal material is returned to the mantle? We look forward to a lively discussion of these and other issues.

Session 10e: Large-Scale Tectonic Controls on Fertility of Magmatic Suites for Ore Genesis

Convenors: Jim Mungall (mungall@geology.utoronto.ca), Steve Barnes (steve.barnes@csiro.au)

This session will focus on the petrogenetic processes that dictate the potential for a magma to become the progenitor of an ore deposit, rather than on the ore deposits themselves. All deposit types - whether magmatic or hydrothermal in origin - whose main fluxes of economic elements are derived from magmas constitute suitable topics. Examples include the conditions required to generate U-rich S-type granites in collisional zones, the origins of the magma parental to the numerous deposit types found in the Bushveld complex, or the optimal conditions for the formation of Au-rich magmas in volcanic arcs.



7th International Conference on Geomorphology

Date: Monday, July 6, 2009 — Saturday, July 11, 2009

Location: Melbourne Convention and Exhibition Centre, Melbourne, Australia

Web: http://www.geomorphology2009.com/

Includes the following sessions:

Volcanic Geomorphology

Convenors: Karoly Nemeth (k.nemeth@massey.ac.nz), Jean-Claude Thouret (j.c.thouret@opgc.univ-bpclermont.fr), Bernie Joyce (ebj@unimelb.edu.au)

Volcanic processes are inherently complex and diverse resulting in extreme variations in morphology and the volcanoes effect on the surrounding environment. Volcanoes resulting from either a single event or longer lasting volcanic processes have the ability to alter their surrounding environment. In addition, volcanic activity is considered to be significant factor in climate change both locally and globally. These changes can alter human social evolution, and therefore volcanism can play an important role in human communities on the daily basis. This multidisciplinary session calls for papers dealing with every aspect of volcanism, both physical and social geographically.

Classical studies in geomorphology, such as morphological evolution and geochronology of volcanic reliefs, as well as morphotectonics, morphometry, have demonstrated to be vitally important in understanding many aspects of volcanic processes. The use of new techniques (morphometry, DEM, fractal, regoliths and soils analyses) to date volcanic landforms have proven to be powerful tools to the understanding of volcanic impact in landscape evolution, and short- and long-term erosion of volcanoes and/or their environment. Geoarchaeology and social study methods, including the collection of oral traditions, illustrate the affect volcanism has on human societies. The evolution of sub-oceanic and oceanic volcanoes, and their morphological evolution and submarine sedimentation, are considered to be new trends in volcanic geomorphology research. Detailed studies of eruptive history from sedimentology, physical volcanology geochronology, and geochemistry have also led to the development of realistic, probabilistic models for future eruption activity. Erosion on volcanic slopes and in watersheds has also recently acquired extensive research interest. Quantitative sediment budget and erosion rates in watersheds on active volcanoes have helped refine short term erosion processes. Repeated patterns in volcanic flank instability, mass flows (debris avalanches, debris flows, and mudflows) and resulting natural hazards such as tsunamis may be controlled by external factors. These volcanic events greatly impact the natural and human environment. Interaction of the hydrosphere (glacier, subsurface and surface water) and volcanic activity resulting in phreatomagmatism is considered to be highly hazardous phenomena and generate unique depositional record and volcanic landforms. Hazard-mapping methods and advanced hazard and risk assessment in populated areas on and around active volcanoes have significant social geography aspects and therefore those researches are also welcome in this session.

The session will focus and call contributions centred around four major aspects:

  1. The geomorphic evolution of volcanic edifices from monogenetic volcanoes, strato-volcanoes, calderas and large igneous province.,
  2. Methods used to understand the behaviour of explosive volcacanism and the emplacement of pyroclastic deposits and volcanic mass flow deposits.
  3. Understanding volcanic hazards from research based on physical volcanology and geoarchaeology.,
  4. Methods used for assessing volcanic hazards and risks including social studies.


Large Igneous Provinces of Asia, Mantle Plumes and Metallogeny

Date: Thursday, August 6, 2009 — Sunday, August 9, 2009

Location: Institute of Geology and Mineralogy, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia

Web: http://lip-asia.igm.nsc.ru/index.php?lang=english

Contact: Evgeniy Naumov (LIP-asia@igm.nsc.ru)

The conference is focused on the following topics:

  1. Nature, age, and duration of the formation of large igneous provinces (LIP) of Asia;
  2. Modeling of processes involved in the formation and development of mantle plumes, mantle-crust interaction and ore-magmatic systems;
  3. Petrologic-geochemical aspects of formation of local magmatic complexes within large igneous provinces of Asia;
  4. Metallogenic specialization of largest igneous provinces (LIP) and the role of mantle plumes in the formation of large and unique Cu-Ni-Pt, Ni-Co-As, porphyry Cu-Mo, Au-sulfide, Hg, Au-Hg and rare metal deposits of Asia;
  5. Correlation of magmatic and ore complexes of Asia, their main historic boundaries of formation, and distribution controls of large and unique deposits by mantle plumes of different age;
  6. Interaction of the largest magmatic events, natural disasters and global climate changes


Circum-Caribbean and North Andean Tectonomagmatic Evolution: Impacts on Palaeoclimate and Resource Formation

Date: Wednesday, September 2, 2009 — Thursday, September 3, 2009

Location: Cardiff University, Cardiff, UK

Organisers: Andrew Kerr (kerra@cf.ac.uk), Jim Pindell, Alan Hastie (hastiear1@cf.ac.uk), Iain Neill (neilli@cf.ac.uk)



6th International Dyke Conference

Date: Thursday, February 4, 2010 — Sunday, February 7, 2010

Location: Banaras Hindu University, Varanasi, India

Web: http://idc6.igpetbhu.com/default.aspx

Contact: Rajesh Srivastava (rajeshgeolbhu@gmail.com)

General theme: Dyke swarms – keys for geodynamic interpretation

Sub-themes: (i) Regional maps of dyke swarms and related magmatic units; (ii) Emplacement mechanism of dykes; (iii) Petrology, geochemistry and petrogenesis of dykes; (iv) Geophysics of dykes with special reference to palaeomagnetism, new aeromagnetic maps and remote sensing studies; (v) Geochronology of dykes; (vi) Dykes as plumbing system for Large Igneous Provinces; (vii) Giant dyke swarms and supercontinents; (viii) Alkaline dykes (including kimberlites, lamproites, lamphrophyres and carbonatites); (ix) Synplutonic mafic dykes; (x) Dyke swarms and planetary bodies; (xi) Links to mineralisation e.g. U, PGE and Au, base metals, diamond, Ni-Cr-Co, laterite etc; (xii) Miscellaneous – any other research related to dykes.

Includes the following fieldtrips:

Mafic dyke swarms and synplutonic dykes emplaced within the Dharwar craton

Date: 29th January – 4th February

Leaders: M. Jayananda (mjayananda@rediffmail.com), J. Mallikharjuna Rao (mallikharjun_ngri@yahoo.co.in), Santosh Kumar (surendra100@hotmail.com)

Dyke swarms of Deccan volcanic province

Date: 29th January – 4th February

Leaders: Nitin Karmalkar (nrkarmal@unipune.ernet.in), Raymond Duraiswami (raymond_d@rediffmail.com)

Wajrakarur kimberlite field

Date: 7th-10th February

Leaders: N. Chalapathi Rao (nvcr100@gmail.com), Fareeduddin Srinivas

Mafic intrusive rocks from western Himalaya

Date: 7th-12th February

Leaders: Talat Ahmad (tahmad001@yahoo.co.in), Vikram Thakur (thakurvc@wihg.res.in), Deepak Srivastava (dpkesfes@iitr.ernet.in)



European Geophysical Union (EGU) General Assembly

Date: Sunday, May 2, 2010 — Friday, May 7, 2010

Location: Austria Center Vienna, Vienna, Austria

Web: http://meetings.copernicus.org/egu2010/home.html

Includes the following sessions:

Session TS5.1/GD4.5/GMPV41: Continental rifting – mechanism of deformation, sedimentation, and magmatism

Convenors: Gwenn Peron-Pinvidic (Gwenn.Peron-Pinvidic@NGU.NO), Richard Corfield (British Petroleum), Laurent Geoffroy (laurent.geoffroy@univ-lemans.fr), Ulrich Anton Glasmacher (ulrich.a.glasmacher@geow.uni-heidelberg.de), Matthias Hinderer (hinderer@geo.tu-darmstadt.de), Suzon Jammes (suzon.jammes@geo.uib.no), Sylvie Leroy (sylvie.leroy@upmc.fr), Graham Leslie, Dieter Mertz (mertz@uni-mainz.de), Georg Rumpker (rumpker@geophysik.uni-frankfurt.de), Timothy Reston (t.j.reston@bham.ac.uk), Alastair Robertson (alastair.robertson@ed.ac.uk), Cecile Robin (cecile.robin@univ-rennes1.fr)

Recent discoveries into the composition and architecture of deep-water rifted margins changed our way of looking at continental rifting. Deep ocean drilling and high quality geophysical surveys proved the existence of exhumed continental mantle and hyper-extended crust in deep water settings. However, at present, little is known about the depositional environments, sedimentary facies, the kinematics and age of structures, or the subsidence and thermal history of many of these deep water rifted margins.

We propose that this EGU Session includes general presentations on rifting with particular interest on contributions addressing the influence, evolution and interaction of various rifting processes such as deformation modes, sedimentary processes, serpentinisation, magmatism, and lithospheric thermal characteristics. Which parameter/process influences and interact with which other and how do they control the final architecture of the deep rifted margins? We believe that one of the keys in progressing future research on rifted margins is to combine studies from various sites (onshore and offshore as well as mature and young margins) and methods (modelling, observations). That's why contributions from field studies, data analyses and models are welcome, from worldwide areas.



GeoCanada: Working with the Earth

Date: Monday, May 10, 2010 — Friday, May 14, 2010

Location: BMO Centre, Calgary, Canada

Web: http://www.geocanada2010.ca/

Includes the following sessions:

Palaeoproterozoic tectonic assembly of the W. Canadian Shield: new findings and implications for palaeocontinental reconstruction

Chairs: Kathryn Bethune (kathryn.bethune@uregina.ca), Richard Ernst (richard.ernst@ernstgeosciences.com), Robert Berman (rob.berman@nrcan-rncan.gc.ca)

Cordilleran magmatism, tectonics and resources

Chair: Lyn Anglin (Geoscience British Columbia)



56th Annual Institute on Lake Superior Geology

Date: Thursday, May 20, 2010 — Friday, May 21, 2010

Location: Holiday Inn, International Falls, USA

Web: http://lakesuperiorgeology.org/IF2010/index.html

Chairs: Peter Hollings (pnhollin@lakeheadu.ca), Mark Smyk (mark.smyk@ontario.ca), Mark Jirsa (jirsa001@umn.edu), Terry Boerboom (boerb001@umn.edu)



Cenozoic Continental Rifting

Date: Tuesday, June 1, 2010 — Saturday, June 5, 2010

Location: Irkutsk State University, Irkutsk, Russia

Web: http://www.mantleplumes.org/Conferences/IrkutskSymp2010.pdf

Organising committee chairmen: Evgeni Sklyarov (skl@gpg.crust.irk.ru), Sergei Rasskazov (rassk@crust.irk.ru)

Contacts: Tat’yana Yasnygina (ty@crust.irk.ru), Sergei Rasskazov (rassk@crust.irk.ru)

Russian Petrography Committee, Siberian Branch of Russian Academy of Sciences, Institute of Earth’s Crust, Irkutsk State University: symposium dedicated to the memory of academician Nikolay Alekseevich Logatchev in connection with the 80th anniversary of his birth.

Cenozoic rifting is a process well developed in all continents. Intensive studies of rift systems in central and east Asia, west Europe, and North America have shown general similarity in terms of structural development, thinned lithosphere, elevated heat flow and involvement of melting of deep mantle magmatic sources, but have also revealed some features which are specific only for some rifts. New geophysical and geological data obtained recently on the Baikal, East China, Rio Grande and other rifts essentially improve our understanding of deep processes. Researchers and students are invited to present reports on rift-related phenomena in different continents to this special scientific meeting in Irkutsk, Siberia.

The overall objective of the symposium is to highlight results of Russian and international research groups working on different aspects of Cenozoic continental rifting and to discuss data obtained by high-precision geophysical and geochemical techniques. The significant contribution to understanding processes in the Baikal and other continental rift systems was done by the academician N.A. Logatchev – a leader of several international workshops. The symposium is dedicated to his memory in connection with the 80th anniversary of his birth.

Basic topics for discussion: (i) Tectonic, geophysical, and magmatic criteria for rift-related processes; (ii) Stratigraphy, lithology, and geochronology of sedimentary and volcano-sedimentary units in the Baikal and other continental rift systems; (iii) Evolution of rift-related processes; (iv) Comparative analyses of rifting and related processes in inner regions and margins of continents; (v) Relations between continental rifting and processes at convergent plate boundaries; (vi) Recent motions in continental rift regions, geo-hazards; (vii) Geodynamic models.



11th International Platinum Symposium

Date: Monday, June 21, 2010 — Thursday, June 24, 2010

Location: Laurentian University, Sudbury, Canada

Web: http://11ips.laurentian.ca/Laurentian/Home/Departments/Earth+Sciences/NewsEvents/11IPS/11IPSHome.htm?Laurentian_Lang=en-CA

Includes the following fieldtrips:

PGE mineralisation in the Nipissing and East Bull Lake intrusive suites

Date: 16th-19th June

Leaders: Michael Easton (mike.easton@ontario.ca), Richard James (rjames@laurentian.ca), Scott Jobin-Bevans (Caracle Creek International Consulting), Richard Sutcliffe (URSA Major Minerals)

The Palaeoproterozoic Southern Province encompasses a variety of mafic intrusions hosting Cu-Ni±PGE mineralisation, the most famous of which is the Sudbury Igneous Complex. This 4-day field trip will focus on the geology, stratigraphy, and contact-style Cu-Ni±PGE mineralisation hosted in two other areally-extensive mafic intrusive suites located within the Southern Province: the 2.48 Ga East Bull Lake Intrusive Suite and the 2.2 Ga Nipissing Intrusive Suite. Rocks of the East Bull Lake Intrusive Suite were once part of the same Palaeoproterozoic craton that included rocks of similar age and composition now located in Finland, Russia, Wyoming, and Ontario. Day 1 stops will view the major stratigraphic units and typical mineralisation present in the River Valley Intrusion (East Bull Lake Suite), which has been affected by varying degrees by Grenville (1.0 Ga) metamorphism, followed by travel to Espanola. Day 2 stops will visit the classic East Bull Lake Intrusion, viewing all major stratigraphic units as well as typical mineralisation, returning to Espanola in the evening. Day 3 stops will compare and contrast rock units and mineralisation styles between rocks of the East Bull Lake Intrusive Suite and Ursa Major's 2.2 Ga Shakespeare deposit (Nipissing Suite). Day 4 stops will examine rocks of the Agnew intrusion (East Bull Lake suite), returning to Sudbury in time for the welcoming reception. Cost: $650 for non-students, $400 for non-students (max. 3 at that rate), includes 3 breakfasts, 4 lunches, 3 dinners, and 3 nights (16-18 June) shared accommodation, ground transportation, guidebook, and geological maps. Departs: Sudbury 8AM on Wednesday 16 June. Returns: Sudbury 5PM on Saturday 19 June. Maximum: 18 participants, Minimum: 10 participants.

Geology of the Duke Island Complex, Alaska

Date: 16th-19th June

Leaders: Curt Freeman (Avalon Development Corp.), Ed Ripley (ripley@indiana.edu)

The Duke Island Complex is a Ural-Alaskan intrusion that occurs in the Alexander Terrane of southeast Alaska. Rock types in the Complex include dunite, wehrlite, olivine clinopyroxenite, hornblende-magnetite clinopyroxenite, hornblendite and hornblende-plagioclase pegmatite. Emplacement occurred between 106 and 112 Ma, just before the onset of Mid-Cretaceous thrust faulting in the Alexander Terrane. Debate continues as to whether the Complex fits the description of a concentrically zoned ultramafic complex or if "cumulate" processes overshadowed reactive melt-rock interaction. What is not debated is that the Complex contains some of the most spectacularly layered igneous rocks on Earth. Cu-Ni-PGE sulphide mineralisation has recently been discovered, primarily in the olivine clinopyroxenites. The trip will include two days devoted to examining rocks of the Complex, as well as country rocks. Lodging will be in Ketchikan, Alaska, with helicopter/float plane transport to the island each morning and helicopter transport on the island and for the return to Ketchikan each evening. NOTE: Participants will require passports and possibly also visas to enter the US.Cost: $2225 for non-students, $1500 for students (max. 1 at that rate), includes 3 nights (16-19 June) single lodging in Ketchikan, helicopter/float plane transport to and from Duke Island, 2 lunches and mid-morning coffee/snacks (17-18 June), and guidebook. The hotel serves a continental breakfast, but there are other options for breakfast, as well as dinner, in Ketchikan. The trip does not include transportation between Ketchikan and Sudbury. Actual trip dates: Thursday 17 and Friday 18 June. Participants should make arrangements to arrive in Ketchikan on 16 June and to depart for Sudbury on 19 June. Maximum: 10 participants, Minimum: 10 participants.

Physical volcanology of komatiites and associated Ni-Cu-(PGE) mineralisation in the western Abitibi greenstone belt, Ontario

Date: 25th-29th June

Location: Michel Houle (Michel.Houle@NRCan-RNCan.gc.ca), Sonia Prefontaine (sonia.prefontaine@ontario.ca), Brian Atkinson (Ontario Geological Survey)

The Abitibi Subprovince hosts a variety of komatiitic lava flows, subvolcanic sills, and intrusions hosting Ni-Cu-(PGE) mineralisation. This 5-day field trip will focus on the stratigraphy, the physical volcanology, and the Kambalda- and Mt. Keith-style mineralisation hosted in two extensive lithotectonic assemblages located within the Abitibi Greenstone Belt, the 2719-2711 Ma Kidd-Munro assemblage and the 2710-2704 Ma Tisdale Assemblage. Komatiitic rocks in the Abitibi Greenstone Belt are among the best-preserved mineralised komatiites in the world. Day 1 will be used to drive from Sudbury to Kirkland Lake (~5 hours). On the way to Kirkland Lake, an atypical komatiite-hosted nickel occurrence will be visited; the C-Zone mineralisation is associated with a heterolithic komatiitic breccia in Bannockburn Township. An evening lecture will be presented to introduce participants to the general geology of the Abitibi Greenstone Belt. Day 2 stops will be devoted to the physical volcanology of komatiite by examining typical volcanic facies at classic exposures such as Pyke Hill and Lava Lake at the Potter Mine in Munro Township. VMS-style mineralisation closely associated with this mafic to ultramafic volcanic succession and an ultramafic to mafic layered intrusion will also be examined (if time permits). Day 3 stops will look at the subvolcanic-volcanic architecture of the Shaw Dome, prolific for its nickel mineralisation associated with komatiites, by comparing and contrasting physical volcanology and mineralisation styles between extrusive and intrusive mineralised environments (DDHs at Hart, McWatters and Redstone). Day 4 will focus on the physical volcanology of komatiites in Dundonald Township and its implication for komatiite-associated Ni-Cu-(PGE) deposits. Day 5 stops will examine rocks of the Bartlett Dome (Serpentine Mountain, Texmont mine) and the Halliday Dome (Sothman deposit), returning to Sudbury late afternoon. Travel will be by mini-vans, accommodations will be in motels in Kirkland Lake and Timmins. Cost: $900 for non-students, $550 for students (max. 2 at that rate), includes 4 breakfasts, 5 lunches, 4 dinners, 4 nights shared accommodation (25-28 June) in Timmins, ground transportation, and guidebook. Departs: Sudbury ~830AM on Friday 25 June, Returns: Sudbury ~6PM on Tuesday 29 June. Maximum:18 participants, Minimum: 10 participants.

Ni-Cu-(PGE) mineralisation in mafic intrusions of the Lake Superior region

Date: 24th-30th June

Leaders: Jim Miller (mille066@tc.umn.edu), Mark Smyk (mark.smyk@ontario.ca), Peter Hollings (pnhollin@lakeheadu.ca)

This 6-day trip will investigate field exposures and drill core of Cu-Ni-PGE deposits hosted by various 1.1 Ga Midcontinent Rift-related, mafic and ultramafic intrusions in the western Lake Superior region. Mineralised intrusions to be visited include the Coldwell Complex near Marathon, Ontario, several small ultramafic bodies in the Lake Nipigon-Thunder Bay, Ontario area, the South Kawishiwi and Partridge River intrusions of the Duluth Complex in northeast Minnesota, and the Eagle Intrusion in Upper Michigan. The trip will also visit the Pd-mineralised Archean Lac des Isles Complex near Thunder Bay. Travel will be by coach bus and accommodations will be in motels in Marathon and Thunder Bay, Ontario, Biwabik and Duluth, Minnesota, and Marquette, Michigan. NOTE: Participants will require passports and possibly also visas to enter the US.Cost: $1475 for non-students, $1000 for students (max. 3 at that rate), including all meals, 6 nights (24-29 June) shared accommodation, motor coach transportation, and guidebook. Departs: Sudbury ~1PM on Thursday 24 June, Returns: Sudbury ~3PM on Wednesday 30 June. Maximum: 45 participants, Minimum: 30 participants.

PGE mineralisation in the River Valley intrusion (East Bull Lake Intrusive Suite)

Date: 25th June

Leaders: Michael Easton (mike.easton@ontario.ca), Richard James (rjames@laurentian.ca), Scott Jobin-Bevans (Caracle Creek International Consulting)

The Palaeoproterozoic Southern Province encompasses a variety of mafic intrusions hosting Cu-Ni±PGE mineralisation, the most famous of which is the Sudbury Igneous Complex. This 1-day trip will view the major stratigraphic units and typical contact style PGE±Cu-Ni mineralisation present in the River Valley Intrusion, typical of that found throughout the 2.48 Ga East Bull Lake Intrusive Suite, as well as the effects of Grenville metamorphism (1.0 Ga) on rocks of the intrusion. Rocks of the East Bull Lake Intrusive Suite were once part of the same Palaeoproterozoic craton that included rocks of similar age and composition now located in Finland, Russia, Wyoming and Ontario. Cost: $80 for non-students, $50 for students (NOTE: maximum of 2 at that rate are already filled),includes lunch, ground transportation, and guidebook. Participants are responsible for making their own accommodation, breakfast, and dinner arrangements on 25 June. Departs: Sudbury 7AM on Friday 25 June 25, Returns: Sudbury 7PM on Friday 25 June 25. Maximum: 18 participants, Minimum: 10 participants.



Western Pacific Geophysics Meeting

Date: Tuesday, June 22, 2010 — Friday, June 25, 2010

Location: Taipei International Convention Center, Taipei, Taiwan

Web: http://www.agu.org/meetings/wp10/index.php

Includes the following sessions:

V04: Large Igneous Provinces: recent developments and ways forward

Convenors: Gregory Shellnutt (jgshelln@earth.sinica.edu.tw), Kwan-Nang Pang (mailto:knpang@ntu.edu.tw)

During the last four decades there has been substantial interest in large igneous provinces (LIP). LIP research began to blossom in association with mantle plume theory which has led to exciting new discoveries that challenge our perceptions of the formation of the crust. Studies on LIPs have improved the scientific understanding of volcanic effusion rates, mineral deposits, crustal growth and catastrophic ecosystem collapse. This session is aimed at geochemists, petrologists, economic geologists and geophysicists to present new results with emphasis on sub-aerial and sub-marine large igneous province of the Asia-Pacific region.

V08: Volcanism and environmental change

Convenors: Susanne Straub (smstraub@ldeo.columbia.edu), Chang-Hwa Chen (china@earth.sinica.edu.tw)

Earth history provides rich testimony that volcanism influences the evolution of the habitable Earth. Single large volcanic eruptions may trigger landslides and tsumanis, and lower global temperatures causing famine. Volcanic greenhouse gases in the atmosphere may have influenced glacial cycles in concert with other pacers of environmental change. Plateau-forming volcanism formed may have altered ocean circulation patterns and ocean chemistry, and erased some species. We invite contributions from basic and applied research that shed light on the mechanisms by which volcanism and volcanic processes shape and change the habitable environment on Earth.



The Meeting of the Americas

Date: Sunday, August 8, 2010 — Friday, August 13, 2010

Location: Rafain Hotel and Convention Center, Foz do Iguacu, Brazil

Web: http://www.agu.org/meetings/ja10/

Includes the following sessions:

P05: Impact cratering on solid planets – shocks on basalts

Convenors: David Baratoux (baratoux@dtp.obs-mip.fr), Masahiko Arakawa (arak@eps.nagoya-u.ac.jp), Alvaro Crosta (alvaro@ige.unicamp.br)

Impact craters on solid planets are often formed on magmatic rocks. For the Moon and Mars, new magnetic, mineralogical and chemical data motivate a better quantification of shock effects on basalt. Recent analyses of craters on terrestrial igneous provinces offer the perspective of comparative studies. Contributions providing insights into the formation of impact craters on magmatic bodies, experimental or field studies (e.g. Vargeao and Cerro do Jarau, or Lonar), and analyses of extra-terrestrial impact structures will be appreciated. A 2-day field trip to Vargeao and Vista Alegre craters is being proposed in association with this session.

V03: Layered intrusions: up and down inside a volcano

Convenor: Nikolai Bagdassarov (nickbagd@geophysik.uni-frankfurt.de)

Layered intrusions represent a time evolution of closed crystallising magma bodies. Pressure, temperature, oxidation state as well as magmatic fluid regime are reflected in density stratification of magmatic minerals inside magma chambers. The session is aimed to discuss petrological field observations of mineral layering in various volcanic environments, numerical and laboratory modelling of sedimentation-floating processes in magma chambers on micro and macro scales.

V04: LIPs and mafic dyke swarms of South America

Convenors: Wilson Texeira (wteixeir@usp.br), Richard Ernst (richard.ersnt@ernstgeosciences.com), Elson Oliveira (elson@ige.unicamp.br)

Continental flood basalts, volcanic passive margins, oceanic plateaux, mafic dyke swarms, as well as bimodal and dominantly felsic magmatism represent the largest known intraplate-type igneous episodes on Earth. The high-quality information content of Large Igneous Provinces (LIPs) record (precise ages and piercing points, trends, palaeomagnetic poles) is critical in sorting out supercontinent configurations. With the importance and potential of LIP studies in mind, this session welcomes presentations on all aspects of the Phanerozoic and Precambrian LIP record of South America, including assessment of the broader global geodynamic implications.

V06: Mantle plumes in the Atlantic Ocean

Convenor: Munir Humayun (humayun@magnet.fsu.edu)

This session aims to attract geologists, geochemists and geophysicists, conducting research on the mechanisms of plume generation, ridge-plume interactions, plume source compositions and plume melting dynamics, for the diverse variety of plumes encountered in the Atlantic Ocean basin. This session encourages submissions regarding physical or chemical studies that contribute to our understanding of plume generation, including the recycling of subducted slabs, or other sources of mantle heterogeneity expressed in oceanic island basalts (OIB), and processes involving the impact of OIB on the mid-oceanic ridge due to ridge-plume interactions.

V10: Understanding magmatism: from crystals to provinces

Convenors: Olivier Bachmann (bachmano@u.washington.edu), Guilherme Gualda (g.gualda@vanderbilt.edu), Josef Dufek (dufek@gatech.edu), Calvin Miller (calvin.miller@vanderbilt.edu)

Understanding magmatic systems requires combining information from a variety of disciplines (petrology, geochemistry, geophysics, geochronology), using a variety of approaches (from field work to modelling), and in a variety of scales (from individual crystals to entire provinces). This session aims to bring together researchers studying multiple aspects of magmatic systems. We are interested in (1) emphasising the relationship between plutonic and volcanic rocks, (2) using mineral compositions to record magmatic conditions, (3) unravelling the chronology of events, (4) using well-constrained modelling, and (5) exploring eruption triggers.

Includes the following fieldtrips:

Impact craters in basalts

Date: 14th-15th August

Basaltic impact craters are rare on Earth (although common in other solid planetary bodies). We will visit two impact craters: Vargeão and Vista Alegre, in Paraná and Santa Catarina states, with diameters of 13 and 9.5 km, respectively. This will provide a first-hand insight of the shock deformation features in basalt, especially for participants of the session "Impact Cratering on Solid Planets - Shocks on Basalt".

The sites are only a few hours from Iguazu.

ParanaMagmatic Province

Date: 3rd-7th August

Leaders: Leila Marques (leila@iag.usp.br), Antonio Jose Nardy (nardy@rc.unesp.br), Breno Waichel (breno@unioeste.br)

The opening of the South Atlantic was preceded by voluminous magmatism in Brazil and Africa, giving rise to the Paraná-Etendeka Magmatic Province, one of the largest igneous provinces of the world. In Brazil, the volcanic rocks were erupted into a Palaeozoic sedimentary basin (Paraná Basin) represented by flood basalts with minor intermediate and acid (rhyodacite/rhyolite) volcanics. The volcanism was also accompanied by significant intrusive magmatism, which gave rise to sills and three dyke swarms. In the field trip different volcanic rock-types will be observed, as well as several volcanic structures, such as lava lobes, pegmatoid segregations, pahoehoe lavas and peperites. The trip begins with the spectacular outcrops of the Florianópolis Dyke Swarm, belonging to the final stages of the magmatic activity. Then, several exposures of the lava piles will be visited, beginning with the first basaltic flows in contact with the aeolian sandstones of Botucatu Formation. We will then follow the sequence of lava flows upward in magnificent valleys where the entire pile of basaltic flows, and intertrap sandstones, can be recognised. The two types of acid volcanics, at the upper portions of the lava piles and representing the last stages of the volcanic activity, will also be examined. The trip will finish in Foz do Iguaçu City, which was built over basalts of Paraná Magmatic Province. Participants must arrive in Florianópolis on August 2nd. The field trip starts on August 3rd early in the morning. Interested participants can contact Leila Marques at leila@iag.usp.br. Preliminary cost estimate is U$ 1,000.00.The minimum number of participants is 15 and the maximum is 35.

 



Volcanic and Magmatic Studies Group (VMSG) Field Trip

Date: Monday, August 30, 2010 — Saturday, September 4, 2010

Location: Attacal, County Down and Ballintoy, County Antrim in Northern Ireland, UK

Web: http://www.dur.ac.uk/d.a.jerram/VMSG/meetings.html

In the Footsteps of Giants: Irish Legends and Palaeogene Magmatism

Contact: Carl Stevenson (c.t.stevenson@bham.ac.uk)

This year’s VMSG field trip will be to the Palaeogene igneous centres of Northern Ireland. The Northern Irish sector of the British and Irish Palaeogene Igneous Province (BIPIP) is a classic area in British and Irish geology containing key subvolcanic complexes – the Mourne Granite Centres, Slieve Gullion Ring Complex and the Carlingford Complex, and the UNESCO World Heritage site the Giant’s Causeway. This region is also steeped in mythology where the fabled giant Finn McCool acquired his name (Finn or Fionn meaning fair) when he was tricked by a witch to dive into an enchanted pool at the summit of Slieve Gullion. Then there is the eponymous Giant’s Causeway which was part of a spat between Finn and the Scottish Giant Fingal (of Fingal’s Cave on Staffa).

On this trip we plan to visit localities in the Mourne Granites, some new road cut outcrops through the Slieve Gullion ring-complex, cone sheet outcrops of the Carlingford Centre, faulting and intrusion relationships west of the Antrim Basalt plateaux, the Portrush Sill and, of course, the Giant’s Causeway. The aim of the trip is to consider the structural relationships of these subvolcanic intrusions, the implications for their emplacement and examine new evidence for tectonomagmatic relationships in this sector of the BIPIP.

Costs:

Full price £350 Student £280

(£50 deposit with full price to be paid by registration deadline is also acceptable, but payment after registration deadline will incur a £50 admin. charge)

Price includes full board YH accommodation and a field guide. Places are limited to 30, given on a first come first served basis and are already filling up fast.

Registration deadline 1st July (or when places are filled).



Geological Society of America (GSA) Annual Meeting

Date: Sunday, October 31, 2010 — Wednesday, November 3, 2010

Location: Colorado Convention Center, Denver, USA

Web: http://www.geosociety.org/meetings/2010/

Includes the following sessions:

T124: Proterozoic crustal evolution

Convenors: Paul Mueller (mueller@geology.ufl.edu), Joe Wooden (jwooden@stanford.edu), Marion Bickford (mebickfo@syr.edu)

This session will explore controversies regarding Proterozoic evolution of southern Laurentia. Topics include Palaeoproterozoic arc-accretion versus rift-related reactivation and assembly and the nature of ca. 1.45-1.0 Ga Mesoproterozoic activity. These questions will involve supercontinent assembly.

T156: Controls and consequences of continental rifting: from heat flow, stress, and strain to magmatism, landscape-basin evolution, and development of natural resources

Convenors: Yilderim Dilek (dileky@muohio.edu), Benjamin Drenth (bdrenth@usgs.gov), Ren Thompson (ren52157@mac.com), Harald Furnes (herald.furnes@geo.uib.no)

Broad-ranging, multidisciplinary studies are sought to discuss continental rift-related topics such as lithospheric breakup; mantle response/melt evolution; magma localisation; influence of pre-existing structures; stress fields/kinematics; surface uplift/sedimentation; basin segmentation/evolution; natural hazards/resources; and climate change.



American Geophysical Union (AGU) Fall Meeting

Date: Monday, December 13, 2010 — Friday, December 17, 2010

Location: Moscone Convention Center, San Francisco, USA

Web: http://www.agu.org/meetings/fm10/

Includes the following sessions:

T05: Interaction between magmatic and tectonic processes in continental and incipient oceanic rifts

Convenors: Derek Keir (d.keir@leeds.ac.uk), Carolina Pagli (c.pagli@leeds.ac.uk), Juliet Biggs (juliet.biggs@earth.ox.ac.uk), Eleonora Rivalta (e.rivalta@leeds.ac.uk)

A key breakthrough in the last decade is recognition of the intimate linkage between extensional deformation and magmatism during rupture of the continents. However, the nature of this relationship at all depths through the lithosphere and its evolution through time remain controversial. We invite contributions from observational and modelling studies that constrain the length, time scales and mechanisms of magma transport and emplacement in continental and incipient oceanic rifts. We also welcome contributions on interactions between magmatism and other deformation mechanisms (e.g. faulting and ductile stretching) and their response to rheological controls.

T06: Structure, dynamics, and evolution of the African-Arabian rift systems

Convenors: Derek Keir (d.keir@leeds.ac.uk), Ian Bastow (ian.bastow@bristol.ac.uk), Christel Tiberi (christel.tiberi@gm.univ-montp2.fr), Cecile Doubre (cdoubre@uinstra.fr)

The Red Sea, Gulf of Aden and rifts of the Afar volcanic province have developed since Palaeogene times during the removal of the Arabian plate from Africa above anomalously warm mantle: the African superplume. The geological record of the region exhibits active extensional systems ranging from the early stages of breakup to sea-floor spreading, and thus the development of young passive margins. We invite contributions from geoscientific studies that help constrain structure and dynamics of crust and mantle beneath the region. We also invite contributions from studies that address linkages between mantle dynamics, lithospheric extension and magmatism.

T20: Investigation of the Earth’s interior using geophysical and laboratory measurements

Convenors: Anne Pommier (apommier@mit.edu), Robert Evans (revans@whoi.edu)

Physical properties, such as electrical resistivity, seismic velocity, viscosity and density of melts, minerals and fluids, are the filter through which geophysical models attempt to constrain geodynamic processes. These constraints can only be as good as our understanding of how the physical properties measured vary as functions of Earth's temperature, pressure and composition. Laboratory measurements, therefore, provide the vital information through which geophysical interpretations are made, and also mark the limits of interpretational ability. We invite contributions that emphasise a laboratory-field multidisciplinary approach in furthering geological understanding.

V25: Generation and evolution of alkaline to sub-alkaline magmas

Convenors: Romain Meyer (mail@romain-meyer.eu), Sebastien Pilet (sebastien.pilet@unil.ch), Etienne Medard (e.medard@opgc.univ-bpclermont.fr), Ralf Gertisser (r.gertisser@esci.keele.ac.uk)

This session is designed to bring together multiple disciplines to understand the generation and evolution of alkaline to sub-alkaline magmas observed in rift volcanic systems and intraplate settings. This session will include discussion on the mechanism of magma generation (asthenospheric vs. lithospheric), on source characteristics (implication of recycled material, metasomatism, crustal anatexis), and on processes related to the chemical evolution of these magmas from mantle depths to shallow level (fractional crystallisation, assimilation, magma mixing). We encourage contributions that explore new petrogenetic scenarios using field observation, petrological constraints as well as geophysical observations or numerical modelling.

V37: Are hotspots hot?

Convenors: Gillian Foulger (g.r.foulger@durham.ac.uk), Peter Clift (p.clift@abdn.ac.uk), James Natland (jnatland@rsmas.miami.edu)

An anomalously hot mantle source is a requirement of the plume hypothesis, but not of the shallow plate hypothesis. Whether or not the temperature beneath "hotspots" is unusually high is a matter of current dispute. Methods used to measure mantle temperature include seismology, petrology, heat flow, and modelling ocean-floor topography, e.g., swells. A critical underpinning of these efforts is the thermal structure of the mantle, including the thickness of the surface conduction layer and expected lateral variations. This session solicits contributions, from all subdisciplines, that bear on estimating the temperature of the mantle beneath "hotspots". A diversity of viewpoints is anticipated and session time will be allocated to discussion.



Volcanic and Magmatic Studies Group (VMSG) Annual Meeting

Date: Wednesday, January 5, 2011 — Friday, January 7, 2011

Location: Queens’ College, Cambridge University, Cambridge, UK

Web: http://www.vmsg2011.org/index

Includes the following sessions:

Volcanic margins

Convenor: David Pyle (david.pyle@earth.ox.ac.uk)

How is melt generated at volcanic margins? Where does it pond in the mantle and crust and how is it transported towards the surface? We invite contributions from geophysicists, geologists, petrologists and numerical modellers who are addressing these questions at ancient volcanic margins such as the north Atlantic, and also at embryonic margins such as Afar.

Keynote speaker: Bob White (University of Cambridge)

Crustal storage of magma

Convenor: Dan Morgan (d.j.morgan@leeds.ac.uk)

What happens when magma batches stall in the crust and accumulate in large magma chambers? How do replenishment and emptying of such bodies relate to the fluid dynamics of the magma body and surrounding crystal mush? How are these processes preserved in the intrusive and volcanic record? We welcome contributions aimed at addressing problems associated with the fluid dynamics of these open systems, including the effects of partial solidification and fractionation driven by cooling.

Keynote speaker: Jon Davidson (University of Durham)

Mantle processes

Convenor: Rob Ellam (r.ellam@suerc.ac.uk)

How are compositional heterogeneities in the convecting and/or lithospheric mantle reflected in the compositions and volumes of erupted melts? How do these compositional heterogeneities originate in the Earth’s interior? What are the controls on melt generation in the mantle? We welcome contributions from geochemists, petrologists and geophysicists who are addressing these questions and other aspects of mantle processes.

 Keynote speaker: Nick Rogers (Open University)

 



Geological Society of America (GSA) South-Central Section 45th Annual Meeting

Date: Monday, March 28, 2011 — Tuesday, March 29, 2011

Location: Chateau Bourbon Hotel, New Orleans, USA

Web: http://www.geosociety.org/Sections/sc/2011mtg/index.htm

Includes the following sessions:

T1: Lithospheric evolution of southern Laurentia and the Gulf of Mexico

Convenors: Elizabeth Anthony (eanthony@geo.utep.edu), Jay Pulliam (jay_pulliam@baylor.edu)

The lithospheric amalgamation of southern Laurentia during the Proterozoic and its evolution through consequent cycles of continent collision and rifting provides fertile ground for scientists from the Gulf region and beyond. Session themes include supercontinent assembly and dismemberment, the enigmatic Mesoproterozoic magmatic event, and the development of the current Gulf of Mexico, site of one of the largest deltaic sediment accumulations on Earth. This session will synthesise recent findings and overview papers from both geology and geophysics to provide an integration of our understanding of this fascinating area. 



European Geosciences Union (EGU) General Assembly

Date: Sunday, April 3, 2011 — Friday, April 8, 2011

Location: Austria Center Vienna, Vienna, Austria

Web: http://meetings.copernicus.org/egu2011/home.html

Includes the following sessions:

SSP1.7/GMPV56: LIPs: teleconnections between geological processes and mass extinctions

Convenors: Darren Grocke (d.r.grocke@durham.ac.uk), Henrik Svensen (hensven@fys.uio.no), Paul Wignall (p.b.wignall@leeds.ac.uk), Benjamin Black (bablack@mit.edu)

Increasing evidence links large igneous provinces, climate change, and extinction events throughout the Phanerozoic. This session addresses the possible links between these events, focusing on the geological mechanism and processes leading to environmental changes, like release of gases from magmas and from the sedimentary basins into which they intrude and through which they erupt. A main aim of the session is to merge proxy data and isotope studies with geological processes and extinction data and mechanisms. Papers are invited across the possible spectrum of investigations, which include petrology, isotope geochemistry, field measurements, biostratigraphy, geochronology, climate modelling, and geodynamics. The session encourages submissions particularly on the Siberian Traps and the end-Permian extinction, the Triassic-Jurassic boundary (CAMP) and Mesozoic oceanic anoxic events (Ontong Java and Caribbean), the KPg boundary (Deccan Traps) and the Cenozoic (North Atlantic).



Geological Society of America Joint Section Meeting: Rocky Mountain-Cordilleran

Date: Wednesday, May 18, 2011 — Friday, May 20, 2011

Location: Riverwoods Conference Center, Logan, USA

Web: http://www.geosociety.org/Sections/rm/2011mtg/index.htm

Includes the following sessions:

7: Petrologic and geodynamic perspectives on non-arc volcanism in the western United States

Convenors: John Shervais (john.shervais@usu.edu), Tony Lowry (tony.lowry@usu.edu)



25th International Union of Geodesy and Geophysics (IUGG) General Assembly – Earth on the Edge: Science for a Sustainable Planet

Date: Tuesday, June 28, 2011 — Thursday, July 7, 2011

Location: Melbourne Convention & Exhibition Centre, Melbourne, Australia

Web: http://www.iugg2011.com/

Includes the following sessions:

Symposium J-S05/J-V04: The Davies mantle: reconciling geophysical and geochemical perspectives

Convenors: Ian Jackson (ian.jackson@anu.edu.au), Ian Campbell (ian.campbell@anu.edu.au), Louis Moresi (louis.moresi@sci.monash.edu.au), Hans-Peter Bunge (bunge@lmu.de), Albrecht Hofmann (albrecht.hofmann@mpic.de)

This symposium, reflecting on the career-long contribution of Geoff Davies, is intended to provide an interdisciplinary forum for discussion of geophysical and geochemical constraints on mantle structure, chemical composition and dynamical processes. The separation of basaltic melt from refractory harzburgitic residue generates heterogeneity that is resistant to re-homogenization during subsequent mantle convection. Seismic tomography suggests that wavespeed heterogeneity is concentrated in the upper and lowermost parts of the mantle. Geochemical studies provide evidence of long-lived heterogeneity at various spatial scales. Numerical modelling of mantle convection favours at least episodic whole-mantle convection over the strictly layered alternative. Other topical issues include chemically equilibrated compositional models versus mechanical mixtures of components of contrasting chemical composition; melting of eclogite-pyroxenite lenses in a harzburgite mantle; the seismological observability of mantle plumes; the influence of pressure-induced electronic spin-pairing on wavespeed-depth gradients in the lower mantle; and the survival of heterogeneity in a vigorously convecting mantle.

Keynote speakers:

Rick Carlson (Carnegie Institution of Washington)
Cinzia Farnetani (Institut de Physique du Globe de Paris)

Invited speakers (confirmed so far - more to come):

Bill McDonough (University of Maryland)
Eiichi Takahashi (Tokyo Institute of Technology)
Shijie Zhong (University of Colorado)



21st Annual V.M. Goldschmidt Conference

Date: Sunday, August 14, 2011 — Friday, August 19, 2011

Location: Prague Congress Centre, Prague, Czech Republic

Web: http://www.goldschmidt2011.org/

Includes the following sessions:

04a: Chemical geodynamics: 25 years of mantle components

Convenors: Albrecht Hofmann (albrecht.hofmann@mpic.de), Francis Albarede (francis.albarede@ens-lyon.fr), Matthew Jackson (jacksonm@bu.edu), Thorsten Becker (thorstinski@gmail.com)

In the 25 years since the publication of the landmark paper on chemical geodynamics by Zindler and Hart, more species have been proposed for the mantle zoo, but the relationship of this geochemical zoo to the geodynamics and petrology of the mantle remains a subject of lively debate. We invite contributions that investigate the creation, existence and sampling of mantle components and their geodynamic interpretation throughout the thermo-chemical history of the Earth's mantle.

Keynote: Stan Hart (Woods Hole Oceanographic Institute)

04c: Plumes, mid-ocean ridges, and plates: examining their role and interaction with observations and models

Convenors: Kaj Hoernle (khoernle@ifm-geomar.de), Anthony Koppers (akoppers@coas.oregonstate.edu), William Sager (sager@ocean.tamu.edu), Christoph Beier (christoph.beier@gzn.uni-erlangen.de)

Establishing the relative roles of plate-driven and plume-driven processes in the generation of mantle melting anomalies requires integration of geochemical, geophysical and geological observations to test models. We seek contributions that try to disentangle the effects of plate tectonics, mantle temperature, compositional heterogeneity and flow field in controlling mantle melting at mid-ocean ridges and within plates (seamounts, hotspot tracks and Large Igneous Provinces) on oceanic and continental crust/lithopshere. We encourage submissions from both the observational and modelling perspectives of these types of concepts.

04g: Merging experiments, models, and geochemical observations of mantle melting

Convenors: Paul Asimow (asimow@gps.caltech.edu), Claude Herzberg (herzberg@rci.rutgers.edu), Sebastien Pilet (sebastien.pilet@unil.ch)

Recent experimental, analytical and modelling studies have enhanced our understanding of the complexities of mantle melting beneath plate boundary and/or intraplate settings. We seek contributions that focus on mantle melting processes from the perspective(s) of new experimental, modelling and observational data.

Keynote speaker: Peter Kelemen (Columbia University)

04i: Origin of Large Igneous Provinces: linking geochemistry, geochronology, geophysics, geodynamics and climate modeling

Convenors: Alex Sobolev (alexander.sobolev@mpic.de), Andrea Marzoli (andrea.marzoli@unipd.it), Stephan Sobolev (stephan@gfz-potsdam.de), Fred Jourdan (f.jourdan@curtin.edu.au)

The Large Igneous Provinces (LIPs) are known for their enormous productivity of magma at areas of up to several million km2 in less than a few million years. They are likely associated with catastrophic thinning of lithosphere; they may initiate continental break-up and are often related to the global environmental catastrophes and mass extinction events. Despite the obvious importance of understanding the origin of LIPs, controversy surrounds even the basic idea that LIPs form through melting in the heads of thermal mantle plumes, and their timing relative to geodynamic and biological events remains disputed. This session aims at bringing together experts in petrology, geochemistry, geochronology, geophysics, geodynamics and palaeoclimatology to address key problems of LIP origin. Particularly welcome are geodynamic models of LIP origin and models of their climatic impact, as well as new observations on their composition, timing, lithospheric structure and environmental influence.

05c: Continent formation through time

Convenor: Stephen Parman (stephen_parman@brown.edu)

Although processes associated with plate tectonics (subduction, arc volcanism, and island arc accretion) are generally accepted as controlling crust-generation during post-Archaean times, it is still not clear how early in Earth’s history plate tectonics operated or whether continent formation occurred by fundamentally different processes. What role did slab melting, melting during crustal thickening, and large plumes play in making continents in the past, and what insights can be gained from modern examples of such processes? How has the composition of continental crust and its building blocks changed with time? We invite contributions using a variety of approaches (field observation; petrologic, geochronologic and isotopic study; numerical and experimental modeling; etc.) to address these problems.

05h: Kimberlite, carbonatite, and strongly alkaline magmatism: source forming processes and relations to basaltic magmatism

Convenors: Sebastian Tappe (tappe@ualberta.ca), Dejan Prelevic (prelevic@uni-mainz.de), Graham Pearson (gdpearson@ualberta.ca)

This session welcomes studies that investigate the formation of the mantle source regions of kimberlites, carbonatites, and strongly alkaline magmas such as lamproites through geochemical, petrological (including experiments), and modelling techniques. A particular focus is on the potential links between strongly alkaline magma generation and large-scale tectonic events such as continental rifting and lithosphere delamination. Submissions that advance our understanding of the timing and style of kimberlite, carbonatite, and alkaline magma source enrichment, and those discussing whether alkaline magmatism is a cause or a consequence of mantle metasomatism are especially encouraged. We also encourage contributions that compare and contrast the mantle source components identified in strongly alkaline magmas with those considered important in shallow and deep basaltic magma sources.

Keynote speaker: Richard Carlson (Carnegie Institute of Washington)



Volcanic and Magmatic Studies Group (VMSG) Annual Meeting

Date: Wednesday, January 4, 2012 — Friday, January 6, 2012

Location: Durham University, Durham, UK

Web: http://www.vmsg2012.org/

Organisers: Ed Llewellin (ed.llewellin@durham.ac.uk) , Claire Horwell (claire.horwell@durham.ac.uk) , Rich Brown (richard.brown3@durham.ac.uk), Rich Walker (walkerrj@cf.ac.uk), Kirstie Wright (k.a.wright@durham.ac.uk), Pete Tollan (p.m.e.tollan@durham.ac.uk)

Includes the following sessions:

Sources and reservoirs
Convenor: John Maclennan (jmac05@esc.cam.ac.uk)
Keynote: John Armitage (Imperial College London)

Eruptions and emissions
Convenor: Sue Loughlin (sclou@bgs.ac.uk)
Keynote: Claire Witham (Met Office)

Advances in research on the British/Irish Palaeogene Volcanic Province
Convenor: John Gamble (j.gamble@ucc.ie)
Keynote: Valentin Troll (Upsala University)

Volcanoes and society
Convenor: Jenni Barclay (j.barclay@uea.ac.uk)
Keynote: Matthew Watson (University of Bristol)

Magma in motion
Convenor: Mike James (m.james@lancaster.ac.uk)
Keynote: Jurgen Neuberg (University of Leeds)



Arctic Frontiers 2012 – Energies of the High North

Date: Sunday, January 22, 2012 — Friday, January 27, 2012

Location: University of Tromsø, Tromsø, Norway

Web: http://www.arcticfrontiers.com/

Includes the following talks:

Sverre Planke (planke@vbpr.no),  M. Trulsvik, S. Polteau, R. Myklebust, J.I. Faleide, F. Corfu and H. Svensen

Abstract: Three Large Igneous Provinces (LIPs) have had a major impact on the basin development in the Barents Sea: (1) the End-Permian Siberian Traps about 250 Ma ago, (2) the early Cretaceous Barents Sea LIP about 120 Ma ago, and (3) the northeast Atlantic Igneous Province about 55 Ma ago. We have studied the formation, age, and impact of these three provinces using a combination of field work (Siberia, Greenland, Svalbard), seismic and potential field data interpretation (Barents Sea, Norwegian Sea, northeast Greenland) and borehole data (Svalbard, Barents Sea, Norwegian Sea). The Siberian Traps volcanism likely caused the mass extinction at the end of the Paleozoic by eruption of a combination of poisonous magmatic and aureole gases. The environment also changed dramatically at this time. In the Barents Sea, the Permian rocks are dominantly evaporites, whereas the overlying Triassic sequences are mainly clastics. A major earliest Triassic delta developed in the southeastern Barents Sea, possibly linked to Siberian Traps uplift and erosion. Early Cretaceous igneous rocks are abundant in the Barents Sea region. The extent of the igneous province is about 700,000 km2, with extrusive and intrusive rocks in the north (e.g., Svalbard, Franz Josef Land) and an extensive sill complex in the Eastern Barents Sea Basin. The igneous event was associated with major uplift along the northern margin, and southward prograding clastic sequences are present both onshore and offshore in the Barents Sea. New geochronology (U/Pb on zircons) data show that the igneous event was short-lived, and occurred in the Barremian or Early Aptian. The Paleogene continental breakup in the northeast Atlantic and Arctic was associated with massive igneous activity. The volcanism triggered global warming, the Paleocene-Eocene Thermal Maximum, in a greenhouse world. The Arctic areas were warm, as documented by subtropical terrestrial and marine fossils. In the Barents Sea, Paleogene igneous rocks are present along the western margin, e.g., in the Vestbakken Volcanic Province. The continental breakup lead to localized uplift along the sheared margin, forming transform margin highs.



Geological Society of America (GSA) Northeastern Section 47-th Annual Meeting

Date: Sunday, March 18, 2012 — Tuesday, March 20, 2012

Location: Hartford Marriott Downtown, Hartford, USA

Web: http://www.geosociety.org/Sections/ne/2012mtg/

Includes the following symposia:

The CAMP Province: Compositional variation, sources, and environmental effects

Convenors: Johan Varekamp (jvarekamp@wesleyan.edu), Anthony Philpotts (anthony.philpotts@uconn.edu), Paul Olsen (polsen@ldeo.columbia.edu)

The Central Atlantic Magmatic Province (CAMP) stretches from eastern Canada through Florida, Brazil and Venezuela, to West Africa, Iberia, and France, with seaward-dipping reflectors offshore indicating even more voluminous buried basalt flows. Three major lava-flow formations have been mapped in New England: the Talcott, Holyoke, and Hampden basalts, each with their own feeder dike systems. The Holyoke Basalt is part of one of the largest basaltic lava flows in the world. What led to the large-scale melting and eruption of these massive lava flows over such an enormous area? What were the source regions in the mantle for these magmas? Has there been continental assimilation during transport and storage? What were the environmental effects of these massive lava volumes with their gas emissions, especially the effects of CO2 in regard to climate and Earth’s biota? Presentations are encouraged that address these global aspects as well as detailed studies on local flow emplacement and evolution.



Volcanic and Magmatic Studies Group (VMSG) Fieldtrip

Date: Monday, March 26, 2012 — Monday, April 2, 2012

Location: Gran Canaria

Web: http://web2.ges.gla.ac.uk/VMSG/Gran_Canaria_2012.pdf

Through the Inside of a Volcano!

Leaders: Valentil Troll (valentin.troll@geo.uu.se), Abigail Barker (abigail.barker@geo.uu.se)

Contact for registration and payment: Kate Dobson (vmsg.secretary@gmail.com)

Other enquiries: grancanaria2012@gmail.com

Details:

Registration, deposit, payment:

Early booking is necessary to keep prices low, so express your interest as soon as possible! Final registra­tion and deposit of £ 100 by 31st October 2011, final payment by 31st December. Full refunds only possible if your place can be filled, minimum number of registrations needed to run the trip.

Important notes:

Fitness level required for up to full day hikes, up to 2000m changes in altitude per day and sudden change of weather; standard field equipment for hot desert and cold mountain climate, no hammer needed; flights to Gran Canaria must be individually arranged by participants. *Costs: Prices are calculated at the current exchange rate. If exchange rates have changed by the time of final payment, the final payment will be revised. Please contact Kate Dobson if you have any queries.

Itinerary:

Day 1. Arrival/meeting at Las Palmas airport of Gran Canaria (LPA), transfer to accomodation place in Mas­palomas, S-Gran Canaria.

Day 2. Miocene Shield basalts and ignimbrite succession. Topics; lava flows, feeder dykes, glowing ava­lanche deposits (ignimbrites), explosive eruptions from zoned magma chambers.

Day 3. Fataga ignimbrite succession in Grand Canyon-type landscape: Eruption & transport.

Day 4. Caldera volcanoes and their structures. History of the Miocene Tejeda caldera, its infill, and its hy­drothermal system.

Day 5. Hike to Caldera periphery fault system. Small trail hike for ca. 2h in spectacular scenery. Inspection of major fault system and evaluation of the faulting history.

Day 6. Pliocene to recent volcanic activity: Roque Nublo volcano and Roque Nublo monolith, debris ava­lanche breccias, recent cinder cones and explosive maar volcanoes (phreatomagmatic eruptions).

Day 7. Inspection of recent landslide along scenic coastal strip in NW Gran Canaria. Destruction of ocean islands: Volcano-instability and giant lateral collapses.

Day 8. Morning: Inspection of Mineralogy of recent beach sands…. transfer to airport, departure.



Geological Society of America (GSA) Cordilleran Section 108-th Annual Meeting

Date: Thursday, March 29, 2012 — Saturday, March 31, 2012

Location: Hotel Misión Juriquilla, Querétaro, Mexico

Web: http://www.geosociety.org/Sections/cord/2012mtg/

Includes the following sessions:

T.10. The Caribbean Plate and its geologic connections with North and South America

Convenors: Luigi Solari (solari@unam.mx), Uwe Martens (umartens@zoho.com)

Geological correlations and the geodynamic evolution of southern Mexico, Central America, the Caribbean region, and the northern Andes continue to be topics of widespread and active research, multidisciplinary interest, and ongoing controversy. Geologic investigations of these areas are critical for refining reconstructions of Pangea, understanding the origin of the Caribbean plate, and evaluating tectonic models that account for the opening of the Gulf of Mexico, the separation of the Americas, and the relative migration history of the Caribbean. We welcome contributions in all fields of Earth Sciences that yield constraints on the geologic evolution of these areas, especially those that allow regional and continental correlations and constrain the geodynamic evolution.



European Geosciences Union General Assembly

Date: Sunday, April 22, 2012 — Friday, April 27, 2012

Location: Vienna, Austria

Web: http://meetings.copernicus.org/egu2012/

Includes the following sessions:

GMPV2.1/GD2.7/SM4.2/TS1.4: Geochemical, petrological and physical discontinuities in the lithospheric mantle: supporting evidence and hypotheses for their origin

Convenors: Igor Ashchepkov (igor.ashchepkov@igm.nsc.ru), Csaba Szabo (cszabo@elte.hu), Jeroen van Hunen (jeroen.van-hunen@durham.ac.uk)

Mantle discontinuities are the result of melt/fluid migration, mantle diapirism or subduction slab incorporation into subcratonic mantle. Recent results combine with great success geochemical, petrological, petrophysical and geophysical data to produce models of the evolution of the lithospheric mantle.
Key questions for studies of xenoliths in alkali basalts are: 1.Spatial and vertical metasomatic columns in permeable zones in subduction zones and plumes. 2. Determination of melt compositions using melt/fluid inclusions. 3. Pyroxenites and their parental melts. 4. Correlation of chemical and geophysical discontinuities.
Key questions for studies of xenoliths from the cratonic lithosphere are: 1. Characterisation and explanation of internal layering using petrological, geochemical and geophysical techniques . 2. growth mechanisms of the continental lithosphere and their evolution in time 3. types of mantle metasomatism and their relationship to tectonic setting 4. Mechanisms of melt migration through the lithosphere.

 

GMPV1.5/VPG4/GD6.2: Deep mantle mineralogy, geochemistry and geodynamics

Convenors: Michael Walter (m.j.walter@bristol.ac.uk), Reidar Tronnes (reidar.tronnes@ntnu.no)

The theme of this session is the composition, structure, dynamics and evolution of the mantle. We invite participation from a spectrum of disciplines, from seismic tomography, mineral physics, experimental petrology, geochemistry and numerical modeling to understand how the mantle functions and how it evolved to its current state. Some specific processes to be considered include the origin and evolution of large low shear velocity provinces (LLSVP), the interaction between plate tectonics and other modes of convection, the fate of subducted slabs, melting and the segregation of magma, recycling from the surface into the sources of mantle plumes, and the deep mantle volatile cycle.

 

GMPV5.1: Magma generation and differentiation: field, analytical, experimental and numerical investigation of magmatic and volcanic systems

Convenors: Valentin Troll (valentin.troll@geo.uu.se), Ralf Gertisser (r.gertisser@esci.keele.ac.uk), Carmela Freda (freda@ingv.it)

This session invites contributions targeting the generation and differentiation of magmas in the mantle and crust from field studies, petrology, geochemistry (major and trace elements and isotopes), experimental petrology and thermodynamic and geochemical modeling. Magma chemistry sampled in plutonic and volcanic rocks reflect combinations of processes operating in their sources (e.g. metasomatism by fluids and melts, asthenospheric-, lithospheric- and 'exotic' mantle components such as pyroxenites as well as crustal melting and anatexis) and during differentiation from mantle depths to shallow level magma reservoirs and volcanic extrusions/explosions (e.g. fractional crystallization, assimilation, mixing/mingling, replenishment of magma reservoirs and chambers). The fundamental question to be addressed by this session is how igneous systems operate in different tectonic settings and what are the principal controls on primary, parental and derivative magma compositions.

 

GMPV5.2: How magma chambers work: recent advances in the study of granitic, alkaline and mafic-ultramafic plutonic complexes

Convenors: Rais Latypov (rais.latypov@oulu.fi), Jacqueline Auwera (jvdauwera@ulg.ac.be), Tom Anderson (tom.anderson@geo.uio.no)

A key idea of the session is of bring together a diverse group of igneous petrologists to evaluate the current state-of-the-art in our understanding of processes of magma differentiation, crystallization and solidification in plutonic magma chambers of variable form and size (dykes, sills or large intrusions) and variable composition (granitic, alkaline and mafic-ultramafic). The fundamental aspects of magma chamber processes to be addressed by this session are as follows: the relative effects of in situ crystallization versus crystal settling in evolving magma chambers and the origin of layering; the role of thermal and compositional convection in magma differentiation; the effects of compaction and post-cumulus melt migration within the cumulate pile on compositional profiles of magmatic bodies; the formation of chilled margins and compositional reversals along the intrusive contacts of plutonic bodies; the interactions between resident melt in the chamber and inflowing magma during chamber replenishment events; the origin of different compositional profiles in dykes and sills. This session welcomes field, textural, mineralogical, geochemical, isotopic, experimental and numerical examination of plutonic intrusions that provide us with new ideas on how magma chambers operate and develop.

Keynote speakers: Grant Cawthorn (University of Witwatersrand), Liya Kogarko (Russian Academy of Sciences), Fernando Bea (University of Granada)

 

SSP4.8/GMPV6.4: Large Igneous Provinces (LIPs): effects on climate, oceanography and biotic evolution

Convenors: Darren Gröcke (d.r.grocke@durham.ac.uk), Jessica Whiteside (jessica_whiteside@brown.edu), P Olsen (polsen@ldeo.columbia.edu)

Increasing evidence links large igneous provinces, climate change, and extinction events throughout the Phanerozoic. This session addresses the possible links between these events, focusing on the geological mechanism and processes leading to environmental changes, like release of gases from magmas and from the sedimentary basins into which they intrude and through which they erupt. A main aim of the session is to merge proxy data and isotope studies with geological processes and extinction data and mechanisms. Papers are invited across the possible spectrum of investigations, which include petrology, isotope geochemistry, field measurements, biostratigraphy, geochronology, climate modeling, and geodynamics. The session encourages submissions particularly on the Siberian Traps and the end-Permian extinction, the Triassic-Jurassic boundary (CAMP) and Mesozoic oceanic anoxic events (Ontong Java and Caribbean), the KPg boundary (Deccan Traps) and the Cenozoic (North Atlantic).

GD4.1/GMPV6.16: Mid-ocean ridge processes: melting and melt extraction from a heterogeneous mantle           

Convenors: Richard Katz (richard.katz@earth.ox.ac.uk), Andreas Stracke (andreas.stracke@erdw.ethz.ch), Johan Lissenberg (lissenbergcj@cf.ac.uk)

Mid-ocean ridges are our best window into the upper mantle because of their relatively well-understood dynamics and their broad and continuous sampling through extraction of partial melts. They therefore provide the context to address a persistent challenge: understanding the mechanism of sampling, as well as the nature, origin and consequences of chemical heterogeneity in the mantle. Especially relevant are questions such as: what is the "initial condition" of the MOR mantle source? How do heterogeneities melt? How is magma extracted and mixed? How is the chemical signature of the mantle source transposed to the erupted basalts? This interdisciplinary session welcomes all contributions to answering these and related questions.

 

GD2.4/GMPV6.17/SM2.12: Oceanic hotspot origin and dynamics

Convenors: George Helffrich (george.hellfrich@bristol.ac.uk), Gabi Laske (glaske@ucsd.edu), Yanick Ricard (ricard@ens-lyon.fr)

The development history of hotspots in oceanic environments differ depending on their geodynamic environments. Pacific hotspots, exemplified by Hawaii, develop from seamounts, emerge to volcanic islands, and then subside to a guyot stage. Atlantic hotspots develop to an emergent volcanic island yet resist subsidence and continue uplifting. This session aims to document these differences geologically and geophysically with the aim of understanding how different evolutionary histories arise geodynamically.

Keynote speakers: Ricardo Ramalho (University of Muenster), Neil Ribe (Université Pierre et Marie Curie)



Geological Association of Canada-Mineralogical Association of Canada (GAC-MAC) Joint Annual Meeting

Date: Sunday, May 27, 2012 — Tuesday, May 29, 2012

Location: Delta Hotel and Conference Centre, St. John’s, Newfoundland, Canada

Web: http://stjohns2012.ca/

Includes the following sessions:

Rift-related magmatism in the Circum-Atlantic margins and related mineralization

Convenors: Jarda Dostal (jarda.dostal@stmarys.ca), Daniel Kontak (dkontak@laurentian.ca)

The session will focus on various types of rift-related magmatism, and associated mineralization, which formed during different stages of development of the current circum-Atlantic region. This magmatism records repeated rupture and fragmentation of the continental crust through time with contemporaneous effusion of both mafic and felsic volcanic rocks or their intrusive equivalents. The session will deal with a range of related topics, including magma generation, magma evolution, lithospheric interaction, intrusive mechanisms, volcanism and mineralization which are in different ways associated with magmatic processes closely tied to continental rifting. Both oral and poster presentations are welcome. This special session is sponsored by the Volcanology and Igneous Petrology Division.

 

The Large Igneous Province record of North America through time

Convenors: Richard Ernst (richard.ernst@ernstgeosciences.com), Mike Hamilton (mahamilton@geology.utoronto.ca), Wouter Bleeker (wouter.bleeker@nrcan.gc.ca), Paul Sylvester (psylvester@mun.ca)

This session will focus on large igneous provinces (LIPs) in North
America, through all of geological time, also in adjacent ocean basins
 (e.g. Iceland, the Arctic basin), and in formerly attached continental
 blocks (e.g. Europe, NW Africa, Siberia, Australia? etc.). Contributions
 on all aspects of LIP magmatism are welcome: mantle dynamics and plumes,
 the intrusive and extrusive architecture of LIPs, their interaction with sedimentary basins and hydrocarbons, the broader Earth system,
geochemistry, geochronology and paleomagnetism, paleogeographic
 reconstructions, and ore deposits.



American Geophysical Union (AGU) Chapman Conference on Volcanism and the Atmosphere

Date: Monday, June 11, 2012 — Friday, June 15, 2012

Location: Selfoss, Iceland

Web: http://www.agu.org/meetings/chapman/2012/bcall/

Convenors: Michael Rampino (mrr1@nyu.edu), Alan Robock (robock@envsci.rutgers.edu), Thorvaldur Thordarson (thor.thordarson@ed.ac.uk)

Conference objectives and general description:

Volcanic eruptions can have a profound effect on the Earth’s atmosphere and environment on all time scales.  From being the source of most gases in the atmosphere over geologic time to producing climate change detectable over the past millennia, to threatening aviation, volcanic eruptions provide a strong link between Earth’s activity and its influence on the atmosphere and human history.  To better understand these phenomena, the International Association of Volcanism and Chemistry of the Earth’s Interior (IAVCEI) and the International Association for Meteorology and Atmospheric Sciences (IAMAS) formed the Commission on Volcanism and the Earth’s Atmosphere at the AGU Chapman Conference on “Climate, Volcanism and Global Change” in Hilo Hawaii in 1992 following the largest eruption of the 20th Century, Mt. Pinatubo in 1991.  On June 17-21, 2002, the same groups sponsored a second 10th anniversary Chapman Conference in Santorini, Greece, entitled “Chapman Conference on Volcanism and the Earth's Atmosphere”, which also resulted in publication of an AGU monograph.

In the decade since the last meeting in 2002 there have been significant developments in this area in both the academic and broader arenas. We now understand the impacts of volcanic eruptions on climate and aviation better. For example, we have learned more about the winter warming effect on Northern Hemisphere continents, about effects on ozone depletion, the effects of volcanic ash clouds on aviation routes, about the potential for supervolcanoes to disrupt civilization, and about possible limitations on the lifetime and impact of volcanic aerosol clouds. We have also seen proposals for geoengineering schemes to place sulfate aerosols into the stratosphere to counter global warming, for which volcanic eruptions serve as the most important analog, as well as the paralysis of aviation in the North Atlantic region for over 10 days by the 2010 eruption of Eyjafjallajökull.

To review this progress and stimulate new work in this important area, we are holding a third Chapman Conference on volcanic eruptions and the atmosphere, this time broadening it to specifically include aviation. The meeting will be in Iceland, near the sites of one of the most important eruptions of the last few centuries, the Laki eruption of AD 1783, the 2010 eruption of Eyjafjallajökull and the 2011 Grímsvötn eruption, which also disrupted aviation. This conference will also commemorate the 100th anniversary of the 1912 Katmai (Novarupta) eruption in Alaska, and devote one session to that eruption, including the effects of high-latitude eruptions on climate.  2012 is also the 100th anniversary of the establishment of the Hawaiian Volcano Observatory.

Confirmed invited speakers:

Mark Baldwin (Northwest Research Associates)
Lindy Elkins-Stanton (Carnegie Institution for Science)
Áslaug Geirsdóttir (University of Iceland)
Hans-F. Graf (University of Cambridge)
Wes Hildreth (University of Hawaii)
Bruce Houghton (University of Hawaii)
Phil Jones (University of East Anglia)
Mike Mann (Penn State University)
Giff Miller (University of Colorado)
Brian Toon (University of Colorado)

Format and schedule:

The meeting will span five days, with Wednesday being reserved for the field trip to specific sites in the Fire Districts in South Iceland, including localities illustrating key features of the 1783-84 Laki and 934-40 Eldgjá flood lava eruptions as well as Holocene records of explosive eruptions in Iceland.  The schedule is designed to maximize discussion and debate opportunities, and to make the meeting accessible to a broad audience.  Each meeting day will consist of a morning session with invited talks, a late afternoon keynote lecture and poster introductions, and then continuing with a poster session with refreshments before dinner.  All participants, including all the speakers, will bring posters.  Each afternoon will have an extensive unstructured period after lunch for discussions and/or recreation.  Short field trips will be organized during this period for Tuesday and Friday.  The conference will cover the following topics:

  • Records of past volcanic eruptions, including ice cores and tephra records
  • Remote sensing of volcanic eruptions
  • Volcanic eruptions and aviation
  • Effects of volcanic emissions on the atmosphere and climate, including atmospheric chemistry, carbon cycle, and impacts of ash on the ocean, land, and ice
  • Impacts of volcanic eruptions on climate, including the dynamics of the coupled atmosphere ocean systems
  • The role of volcanism in climate change of the Holocene
  • Supereruptions and climate, including observations and climate model simulations
  • Volcanic eruptions as an analog for stratospheric geoengineering

Field trips:

Main field trip (Wednesday): The conference venue is in the region of Iceland known as the Fire Districts, named so because it has experience the effects of volcanic eruptions more than any other region in the country. Since settlement in the late 9th century, the Fire Districts have been subjected to numerous tephra falls from explosive eruptions at Katla, Hekla, Grímsvötn and Bárðarbunga volcanoes and is the site of two largest historical flood lava eruptions in Iceland, the 1783-84 Laki and 934-40 Eldgjá events. We intend to take full advantage of the conference location via one-day field trip by visiting key sites that (a) reveal the regions explosive eruption record in historical time, (b) illustrate the nature, magnitude and impact of the 1783-84 Laki and 934-40 Eldgjá events and (c) highlight the natural wonders of the region.

There will also be a field trip on Saturday that will require additional payment: Leave in the morning to visit Jökulsárlón. The objectives of the trip would be: (a) Illustrate the spectacles of the sandur plains and Öræfi district (which includes Jökulsárlón), which are captivating to say the least, (b) Demonstrate the effects of global warming through the clearly visible record of retreating outlet glaciers, and (c) Visit a site with good records of the 1362 Öræfajökull explosive eruption, which is one of the biggest historical Plinian eruptions in Iceland and wiped out a prosperous farming community that had been established on the plains surrounding the volcano. We may even be able to visit one of the farm ruins. After the tour, drive back to Reykjavik, arriving in the early evening.

On Tuesday and Friday afternoons, participants will have the choice of one of the following short trips. Two will be offered on each day. This will be included in the conference cost:

  • A short hiking trip of the area around Kirkjubæjarklaustur, which would explore the history and nature of the site: The ruins of the monestry; Systrafoss (the Nun-waterfall) and the pond they made above it and utilized as a bathing facility; Eldmessutangi where Jón Steingrímsson conducted his Fire Mass as well as other aspects of the Laki story.
  • Trip to Fjaðrárgljúfur (a spectacular 100 m deep gorge close to Klaustur) as well as the Viking ruins that are close by.
  • Trip to Foss á Síðu and Dverghamrar – spectacular farm site plus nice example of columnar jointed lava, which can be complemented by examination of the Key features of the Síða Formation, which includes rather unusual lava flows.
  • A trip that is focused on examining the explosive eruption (i.e., tephra fall) record in the region over the last 8500 years.


22-nd Annual V.M. Goldschmidt Conference

Date: Sunday, June 24, 2012 — Friday, June 29, 2012

Location: Palais des congrès, Montreal, Canada

Web: http://www.vmgoldschmidt.org/2012/index.htm

Includes the following sessions:

4b: The occurrence, genesis and evolution of alkaline magmas

Convenors: Glenn Gaetani (ggaetani@whoi.edu), Philip Kyle (kyle@nmt.edu), Kenneth Sims (ksims7@uwyo.edu), Erin Writer (ephilli8@uwyo.edu)

Alkaline volcanism occurs in oceanic and continental intraplate and rift settings and more rarely along convergent margins. In this session we will examine the similarities and differences in the occurrence, genesis and magmatic evolution of alkaline magmas from geochemical, petrologic and geophysical perspectives. We encourage contributions that involve a range of different approaches to understanding alkaline magmas including field studies, experiments, geochemical and isotopic measurements, and numerical modeling.

 

4c: Large volcanic plumbing systems in intraplate settings

Convenors: Massimo D’Antonio (masdanto@unina.it), Roberto Moretti (roberto.moretti@unina2.it), Ivan Savov (earis@leeds.ac.uk)

Relevant areas of intraplate volcanism on Earth, such as the Main Ethiopian Rift in East Africa and Hawaii islands in Pacific Ocean, are fed by large plumbing systems. This session aims at bringing together experts working on large volcanic plumbing systems in a variety of intraplate settings, both marine and continental, using multi-disciplinary approaches. Contributions from petrologists, fluid geochemists and geophysicists that focus on active and fossil volcanoes located at sea as well as on land in intraplate settings, are welcomed. Approaches ranging from geochemical characterization of magmatic processes, including partial melting of mantle in several P-T-fluid conditions, fluid transfer and fluxing at variable depth in the lithosphere, and magma-fluid interaction, to variable imaging techniques aimed at reconstructing geometry and architecture of large plumbing systems are encouraged.

Keynote speaker: Leonid Danyushvkyi (University of Tasmania)

 

4e: Mid-ocean ridge processes: melting and melt extraction in a heterogeneous mantle

Convenors: Michael Bizimis (mbizimis@geol.sc.edu), Andreas Stracke (stracke.andreas@uni-muenster.de), Richard Katz (richard.katz@earth.ox.ac.uk)

The composition of mid ocean ridge basalts (MORB) and abyssal peridotites retain a time-integrated record of melting and melt extraction from a heterogeneous upper mantle. How are the different enriched and depleted components arranged in the mantle? What are their length scales and extent of heterogeneity? Under what conditions do they melt and how do the partial melts subsequently travel, react and modify the mantle lithosphere en route to the surface? These remain major, open questions of Mid-ocean Ridge processes. We invite contributions from field, petrological, geochemical geophysical and modeling studies that explore the above questions, especially from the perspective of the mantle sample.

Keynote speaker: Henry Dick (Woods Hole Oceanographic Institute)

 

4f: Roles of lithospheric, depleted, and enriched mantle sources in the genesis of large Ni-Cu-PGE deposits

Convenors: James Mungall (mungall@geology.utoronto.ca), Edward Ripley (ripley@indiana.edu)

Major Ni-Cu-PGE deposits owe their origins to large-scale melting events in the upper mantle, most commonly in continental intraplate or marginal settings. Possible contributing sources of the parental magmas include depleted upper mantle, enriched OIB-type mantle possibly incorporating recycled ancient crust, and reactivated ancient subcratonic lithosphere. This session invites contributions on controversial issues related to the fertility of intraplate magmas parental to Ni-Cu-PGE deposits, such as mantle source composition, and the origins, physical distribution and geometry of the various mantle reservoirs implicated in their genesis.

Keynote speaker: Nicholas Arndt (University of Grenoble)

 

4g: Geochronology and geochemistry of large igneous provinces

Convenors: Paul Sylvester (psylvester@mun.ca), Richard Ernst (richard.ernst@ernstgeosciences.com), Mike Hamilton (mahamilton@utoronto.ca), Wouter Bleeker (wouter.bleeker@nrcan.gc.ca)

Large igneous provinces (LIPs) are the result of large volume magmatic events emplaced over short time scales, found through all of the geologic record. Recent advances in U-Pb geochronology of baddeleyite by TIMS, SIMS and LA-ICPMS have allowed many more mafic LIP events to be dated precisely. The new ages are used for correlations between LIP units on now dispersed terrane fragments, providing constraints on reconstructions of supercontinents. Precise age data also allow geochemical comparisons between different LIP events, leading to a better understanding of variations in their mantle sources and melting processes. This session aims to highlight the analytical developments of U-Pb geochronology of baddeleyite and the application of high-precision age data for LIPs to paleo-continental reconstructions, mantle geochemistry, mantle dynamics and plumes, the intrusive and extrusive architecture of LIPs, global environmental catastrophes and biological mass extinctions, and the genesis and distribution of ore deposits and hydrocarbons within LIP systems.

Keynote speaker: Kevin Chamberlain (University of Wyoming)

 

4h: Geochemical and isotopic insights into large volume silicic eruptions and supereruptions

Convenors: Ilya Bindeman (bindeman@uoregon.edu), Erwan Martin (erwan.martin@upmc.fr)

Recent decade has increased awareness of the origin of large volume magmatism, volcano-plutonic connections, and influence of large volume volcanic eruptions on climate. The session will bring together talks dealing with the origin of large volume silicic magmas, mechanisms of their eruption, and influence of volcanic ash on the environments. The emphasis will be placed on novel geochemical and isotopic approaches, but contributions who deal with numerical modeling of caldera forming eruptions, field studies of large calderas, the role of meteoric hydrothermal system in thermal and material balance in large calderas, or atmospheric of ash and SO2 gas are welcomed.

 

4j: New views of mantle heterogeneity from oceanic basalts

Convenors: Aaron Pietruszka (apietruszka@geology.sdsu.edu), Dominique Weis (dweis@eos.ubc.ca)

The chemical and isotopic diversity of young basalts from oceanic islands, seamounts and plateaus record evidence of the compositional heterogeneity of the Earth’s mantle. The goal of this session is to highlight recent studies on the nature and origin of mantle heterogeneity at all length scales and over a range of depths. We welcome contributions that use elemental and/or isotopic measurements of oceanic basalts (and their minerals and melt inclusions) and/or geochemical modeling to see through the filter of the melting process to the underlying compositional heterogeneity of the mantle. Integrated contributions, with geophysical and/or geodynamical perspectives, are also encouraged.

 

5a: What zircons tell us about crustal evolution

Convenors: Ian Campbell (ian.campbell@anu.edu.au), Tony Kemp (tony.kemp@jcu.edu.au), Ming Li (liming19820426@163.com)

Advances in laser ICP-MS, laser ICP-MS multicollectors and ion probes make it possible to date zircons by the U/Pb method, and analyze them for Hf and/or O isotopes as well as for trace elements. These techniques have been applied to zircons of igneous and metamorphic rocks, and to detrital zircons collected from sedimentary rocks and river sands. The data provide new insights into the timing of formation of primitive continental crust, when it differentiated to form the magmas from which zircon crystallizes and whether these events were continuous or episodic. We invite contributions that highlight any aspect of the use of zircon and related accessory phases in the study of evolution of the continental crust.

 

5b: Evolution and differentiation of the continental crust: a celebration of the contributions by Michael Brown

Convenors: Julia Baldwin (julie.baldwin@umontana.edu), Christine Siddoway (csiddoway@coloradocollege.edu), Richard White (rwhite@uni-mainz.de)

This session is a tribute to Mike Brown, University of Maryland, for his contributions to our understanding of crustal melting, melt extraction and transport through the crust, the effect of melt generation on crustal rheology and changes in style of metamorphism through Earth history. We invite contributions related to the broad topic of the evolution and differentiation of the continental crust. We particularly invite contributions from field and experimental petrology, structural geology, and isotope geochemistry that address the fundamental processes of crustal anatexis, melt segregation, intracrustal differentiation during orogenesis, P-T-t-d histories of HP/HT metamorphic belts and associated melting processes, and the causes of, sources of heat, and partial melting processes under extreme metamorphic conditions.

Keynote speaker: Roger Powell (University of Melbourne)

 

5d: Recycling of continental crust into the mantle: evidence and observations from ocean margins, the crust and the mantle, modern and ancient

Convenors: David Scholl (dscholl@usgs.gov), Kent Condie (kcondie@nmt.edu)

Partial melting of the mantle is the fundamental process that makes continental crust. But tectonic processes subsequently return or recycle crustal material into the mantle and in doing so helped shaped the rock architecture, zircon-age chronology, and bulk composition of existing continental crust. The purpose and intent of this session is to provide a whole-system, across-time forum for papers and posters to present geological, geophysical, and geochemical observations and evidence about tectonic processes that recycle crustal material to the mantle:

  1. At modern and ancient subduction zones,
  2. By delamination or foundering of underplated or orogenically depressed crust, and
  3. Over deep time implied by mantle geochemical signatures and signals.

Keynote speakers: Suzanne Kay (Cornell University), Robert Woodbury (Cornell Universi ty), Charles Stern (University of Colorado)

 

5e: Extraction of crust from the mantle through time: from the Archean to the present

Convenors: Othmar Müntener (othmar.muntener@unil.ch), Oliver Jagoutz (jagoutz@mit.edu), Jean Bedard (jeanh.bedard@nrcan.gc.ca), Steve Parman (stephen_parman@brown.edu)

While there is consensus on the basic mechanisms how continental crust grows during post Archean times, there is controversy how the early crust on Earth was formed. Is plate tectonics the dominant process or are alternative models such as catalytic delamination more compatible with the thermal evolution of the Early Earth? What is the role of water and other volatiles on the early Earth? Are the Archean 'building blocks' that are preserved representative of the Early crust? We invite contributions using a variety of approaches such as field observations, geochronologic and isotopic studies, petrology and modeling approaches and geophysical constraints to address these problems.

 

5g: Formation, evolution, and destruction of cratons

Convenors: Cin-Ty Lee (ctlee@rice.edu), Steven Shirey (shirey@dtm.ciw.edu), Albrecht Hofmann (albrecht.hofmann@mpic.de)

Cratons are strong (“kratos”), seismically inactive ancient regions of the continents that are passive participants in plate tectonics. The apparent strength of cratons is due, in part, to the presence of a thick, refractory mantle keel. While the composition and structure of cratons today is reasonably well understood, a number of outstanding questions related to their formation, evolution and survival are important: By what processes and in what settings do these highly refractory lithospheric keels form? Are certain time periods or geologic processes conducive to craton formation? What properties of the mantle keels or the overlying crust control the strength of cratons? What is the relationship, if any between the keels and the overlying continental crust? What is the cause of late granite blooms that are common in many Archean cratons? By what processes might cratons be destroyed or reworked and how often does this happen? What is the history of metasomatism, and/or access of fluid to the ltihospere? We invite contributions bearing on all aspects of these questions.

Keynote speaker: Roberta Rudnick (University of Maryland)

 

7d: Records of climate change from terrestrial archives: palaeosols and loess

Convenors: Mohammed Rafi G. Sayyed (mrgsayyed@yahoo.com), Martine Gerard (martine.gerard@impmc.upmc.fr)

The driving forces of evolution of Earth’s climate, from cold snowball Earth to warm greenhouse state, can be revealed and quantified by palaeoclimate studies. Nowadays fragile global environmental conditions demand urgent improving of the understanding of paleoclimates to better predict climate change. The physical, chemical and biological composition of ancient soils or more polygenetic buried soils hold great potential as proxies for regional palaeoclimate and palaeoatmospheric circulation patterns as well as palaeoatmospheric pCO2 variations for intervals of Earth’s history characterized by extreme and abrupt environmental perturbations. More understanding of the mechanisms that influence biogeochemical data preservation in the proxies is needed to avoid biases of interpretation. Once these issues are addressed, the geochemistry of palaeosols can provide both qualitative and semi-quantitative information about the changing redox state of the atmosphere since the Precambrian times. Palaeosol-loess sequences also have a great potential for the evolution of climate throughout Earth’s history as they have preserved detailed climatic records of stepwise terrestrial climate change. We invite contributions that investigate various biogeochemical proxies of the evolution of the climate system from Precambrian to Holocene as well as on extreme events (e.g. LIPs related to catastrophic global climate impacts and mass extinctions events).

Keynote speaker: Alexander Makeev (Moscow State University)



34-th International Geological Congress

Date: Sunday, August 5, 2012 — Friday, August 10, 2012

Location: Brisbane, Australia

Web: http://www.34igc.org/

Includes the following sessions:

21.4. Magmatism in extensional environments (continental rifts and MORB)

Convenors: Trevor Falloon (trevor.falloon@utas.edu.au), Yaoling Niu (yaoling.niu@durham.ac.uk)

This Symposium will explore new advances in our understanding of magmatic compositions and processes involved in the initiation of continental rifting, leading to continental breakup and the eventual development of major ocean basins. We therefore especially invite contributions related to continental rifts, and mid-ocean ridge spreading environments. A special focus of this theme will be new understandings related to the timing of melt generation, migration, crystallization and cooling of magmatic rocks in these environments. However all aspects of magma petrogenesis are welcome.

Keynote speaker: Kenneth Rubin (University of Hawaii)

 

21.5. Intraplate magmatism, including ocean island basalts, continental basalt provinces, kimberlites and lamproites

Convenors: Ben Cohen (b.cohen@uq.edu.au), Ian McDougall (ianmcdougall@anu.edu.au), Godfrey Fitton (godfrey.fitton@ed.ac.uk)

This Symposium will examine the advances in our understanding of the processes involved in the generation of oceanic and continental intraplate magmas, including kimberlites and lamproites. Of particular interest is the role, or not, of mantle plumes in the generation of intraplate magmas. Some (e.g., Hawaii) appear to require anomalously hot mantle, but evidence for high-temperature mantle is apparently lacking in most. To what extent can intraplate magmatism be explained through fertile domains in the asthenosphere or lithospheric mantle? Do mantle plumes carry a diagnostic geochemical signature? What can geochronology and paleomagnetism tell about the time-space distribution of intraplate magmatism? Submissions addressing these, and other issues relating to the petrogenesis and geochemistry of intraplate magmatism, are welcomed for this Symposium.

Keynote speaker: Anthony Koppers (Oregon State University)

 

21.6. Large Igneous Provinces and their impact on the lithosphere, atmosphere and biosphere

Convenors: Scott Bryan (scott.bryan@qut.edu.au), Steve Self (stephen.self@nrc.gov), Ingrid Ukstins-Peate (ingrid-peate@uiowa.edu)

Large igneous provinces (LIPs) represent episodic, catastrophic igneous events throughout Earth history. They are distinguished by high intensity bursts of principally mantle-derived magma to the crust and surface over geologically short timescales. LIP volcanism had a major impact on the lithosphere, atmosphere and biosphere, and consequently has been implicated as a driving factor in environmental change based on the temporal relationship with several mass extinction events through the Phanerozoic. Not only can individual eruptions pose a significant hazard through atmospheric loading of volcanic aerosols, but elevated eruption frequency and the potential for synchronous mafic ± silicic large-magnitude (>M8) eruptions mean that environmental change may be exacerbated by the cumulative effects of multiple eruptions, both direct and indirect. Over the last 10 years, proposed mechanisms for environmental change include volcanic CO2 or S emissions, gas emissions from clathrate or hydrocarbon disturbance, and Fe fertilisation of oceans from ash loading. This Symposium seeks cross-disciplinary contributions from the Earth, atmospheric, climate, and biological sciences that are investigating the lithospheric to atmospheric impact of LIPs. Contributions focusing on assessing the integrated impact and the rates and mechanisms of Earth system response to LIP magmatism are encouraged.

Keynote speakers: Benjamin Black (Massachusetts Institute of Technology), Richard Ernst (Ernst Geosciences), Charlotte Vye (British Geological Survey), Sverre Planke (Volcanic Basin Petroleum Research AS), Paul Wignall (University of Leeds)



American Geophysical Union (AGU) Chapman Conference on Hawaiian Volcanoes: From Source to Surface

Date: Monday, August 20, 2012 — Tuesday, January 24, 2012

Location: Waikoloa, Hawaii, USA

Web: http://www.agu.org/meetings/chapman/2012/dcall/index.php

Convenors: Michael Poland (mpoland@usgs.gov), Paul Okubo (pokubo@usgs.gov), Ken Hon (kenhon@hawaii.edu)

In 2012, the U.S. Geological Survey's Hawaiian Volcano Observatory will mark the Centennial of its founding. This occasion provides an opportunity to review the state-of-the-art in understanding of how Hawaiian volcanoes work and to assess the most important problems requiring future research. The "Hawaiian Volcanoes: From Source to Surface" Chapman Conference will include both invited and contributed talks, as well as contributed posters. Topical sessions will be organized to follow a packet of magma from its point of origin to the surface, with day-long discussions devoted to (1) magma origin and ascent; (2) processes and consequences associated with magma accumulation and transport; (3) volcanic eruptions and degassing; and (4) new research directions and emerging technologies related to how Hawaiian volcanoes work, and how research in Hawai'i can be used to elucidate processes occurring elsewhere on Earth and other planets (and vice versa).

Specific conference objectives are to:

  • establish the state of current knowledge of Hawaiian volcanism across multiple disciplines and processes
  • explore how a better understanding of Hawaiian volcanoes can be applied to volcanoes elsewhere on Earth and other planets, and vice versa
  • identify the most important questions that should be the focus for future research into how Hawaiian volcanoes work
  • provide a multidisciplinary forum for the exchange of ideas and new technologies/methodologies
  • stimulate the formation of multidisciplinary collaborations that will address key research questions
  • facilitate transfer of knowledge between scientists in different disciplines and career levels

In addition, conference attendees will be invited to contribute to a planned AGU monograph on Hawaiian volcanism that should serve as a resource for researchers for years to come.

Format and Schedule

The meeting will span five days, with Wednesday being reserved for field trips to various locations on the Island of Hawai'i (see below). Each meeting day will include morning invited plenary talks, early afternoon contributed plenary talks, afternoon panel discussion followed by a keynote address, and evening poster viewing (following a late afternoon break). The meeting format is designed to maximize scientific discussion by providing numerous methods for attendees to engage one another. The four meeting days will each be devoted to a different session topic:

  1. Magma origin and ascent
  2. Magma accumulation and transport, and related processes
  3. Volcanic eruption and degassing
  4. Current and future research in Hawaiian volcanism

Field Trip

Wednesday will include a field trip to locations of geologic interest on the Island of Hawaii. Because over 100 attendees are expected at the conference, three different field trips will be offered, with attendees choosing their preferred trip(s) upon registration and being assigned to trips on a first-come first-served basis. The three trips will include:

  1. Overview of Kilauea Volcano and the Hawaiian Volcano Observatory
  2. Mauna Loa and Mauna Kea from the Saddle Road
  3. Volcanic and earthquake features of the Kona Coast

Fields of Interest

The meeting is intended to be of interest to scientists who study any aspect of Hawaiian or similar volcanoes (for example, Etna, Piton de la Fournaise, Iceland, Galapagos, etc.). In particular, the conference should be of special interest to geoscientists who study mantle geochemistry/physics/dynamics; mantle plumes and hotspots; magma ascent, storage and transport; ocean island evolution; and volcanic eruptions and degassing.



Geological Society of America (GSA) Annual Meeting

Date: Sunday, November 4, 2012 — Wednesday, November 7, 2012

Web: http://www.geosociety.org/meetings/2012/

Includes the following sessions:

T131. The relationship between silicic plutons and ignimbrites: exploring the contradictions

Convenors: Craig Lundstrom (lundstro@illinois.edu), Drew Coleman (dcoleman@unc.edu)

We solicit contributions aimed at discussion of the problem of upper crustal magmatic processes leading to formation of silicic plutons or silicic caldera systems and their relationship to each other.

T140. The Big Kill: paleobiological, geochemical, and modeling studies of the Permian-Triassic boundary mass extinction

Convenors: Arne Winguth (winguth@uta.edu), Thomas Algeo (thomas.algeo@uc.edu), David Bottjer (dbottjer@usc.edu)

This session features recent research of sedimentary, geochemical, paleobiological, and paleogeographical records and modeling studies to improve the understanding of the mass extinction near the Permian–Triassic boundary.

T177. Supercontinent cycles through Earth history (poster session)

Convenors: A. Krishna Sinha (pitlab@vt.edu), Kent Condie (kcondie@nmt.edu), Robert Hatcher (bobmap@utk.edu)

Geologic framework of supercontinent cycles through Earth's history: implications of tectonic, petrologic, geochronologic and biologic processes.



American Geophysical Union (AGU) Fall Meeting

Date: Monday, December 3, 2012 — Friday, December 7, 2012

Web: http://fallmeeting.agu.org/2012/

Includes the following sessions:

DI007: Mantle plumes: what do we really know?

Convenors: Dominique Weis (dweis@eos.ubc.ca), Edward Garnero (garnero@asu.edu), Cinzia Farnetani (cinzia@ipgp.fr), Shichun Huang (huang17@fas.harvard.edu)

Mantle plumes provide a likely explanation for the origin of ocean island volcanoes and large igneous provinces, some of which may have caused the largest mass extinctions. Mantle plumes that rise from the core-mantle boundary probe the Earth's deep interior, and thus depend directly on mantle structure, dynamics and evolution. Mantle plumes may also be important for shaping the surface of other planets, such as Mars. In this session, we invite research on terrestrial as well as extraterrestrial mantle plumes, taking a multidisciplinary and integrative perspective from all related fields including, but not restricted to, geochemistry, geodynamics, seismology, geochronology, mineral physics, planetary science, petrology, volcanology and geobiology.

T002: Active Caribbean plate margins: integrating studies for earthquake and tsunami hazard

Convenors: Bernard Mercier de Lepinay (bmercier@geoazur.unice.fr), Eric Calais (ecalais@purdue.edu), Paul Mann (pmann@uh.edu), Pilar Llanes Estrada (pllanes@geo.ucm.es)

Hazards associated with active deformation are often very high along the boundaries of the Caribbean plate. This session targets recent results and upcoming ideas on all active Caribbean tectonic settings from marine and on-land geology, geophysics, seismology, and geodesy, together with modeling studies. Research questions include, but are not limited to, identification of areas with potential for destructive earthquakes, studies of historical and instrumental seismicity, observational and modeling studies of tsunamis, current slip rates on major active faults, studies of strain distribution, accumulation and release, interplate coupling and stress transfer at plate interfaces.

T014: Evolution of the continental lithosphere

Convenors: Anne Meltzer (ameltzer@lehigh.edu), Linda Elkins-Tanton (ltelkins@carnegiescience.edu), Robert Evans (revans@whoi.edu), Matthew Fouch (fouch@dtm.ciw.edu)

Over the past thirty years tremendous progress has been made in understanding the complex processes that shape the continental lithosphere, and much of this progress has been the result of targeted interdisciplinary studies that combine geological, geochemical and geophysical observations with geodynamic modeling. This session highlights these advances, with emphasis on cross-disciplinary studies of continental lithospheric evolution. We welcome contributions discussing continental deformation and lithospheric evolution, the formation and stabilisation of ancient cratons, the formation of continental crust and lithosphere and connections to subduction zone processes, as well as studies of complex areas of continental lithosphere.

T024: Initiation and evolution of rifted continental margins

Convenors: Margaret Benoit (benoit@tcnj.edu), Peter Flemings (pflemings@jsg.utexas.edu), Robert Evans (revans@whoi.edu)

Continental rifts and passive margins record the interplay of surface, crustal, and mantle processes. We seek contributions that emphasize multidisciplinary approaches to illuminate how these systems evolve. We will focus on the following processes: rift evolution; the architecture of rifted margins during and after breakup; and mechanisms and consequences of fluid and volatile exchange between the Earth, oceans, and atmosphere at rifts. We will explore these questions both onshore and offshore. We encourage submissions that emphasize studies of two end-member sites, the Eastern North American Margin and the East African Rift, but submissions on other rifted regions are welcome.

T026: Interdisciplinary perspectives on the origin of intraplate volcanism and large igneous provinces

Convenors: Lapo Boschi (larryboschi@gmail.com), Sebastien Pilet (sebastien.pilet@unil.ch), Maxim Ballmer (ballmer@hawaii.edu)

The expression of intraplate volcanism, as ranging from small seamounts to large igneous provinces, provides clues about mantle dynamics and heterogeneity. However, the controlling mechanisms are controversial and may include lithospheric cracking, small-scale convection, shear-driven flow, fertile mantle heterogeneity, and mantle plumes. Integration of datasets from various disciplines is essential to improve our knowledge of the diversity of intraplate volcanoes observed worldwide. This session will bring together geological, geophysical, petrological and geodynamic studies for a multi-disciplinary discussion on the origin of ocean islands, continental volcanoes, seamounts, and flood basalts.

T029: Magmatism and extension during continental rifting

Convenors: Donald Forsyth (donald_forsyth@brown.edu), Ian Bastow (ian.bastow@bristol.ac.uk), David Ferguson (davef@ldeo.columbia.edu)

Rifting is commonly associated with magmatism, which varies with space, time and geodynamic setting. In East Africa, where the geological record preserves a long history of rift development, the locus of strain has shifted over time from a broad zone of mechanical extension to a narrower zone of magmatism, reminiscent of a mid ocean ridge. In contrast, in the Basin and Range, extension and volcanism have been maintained over a relatively broad area for 15My and the links between magmatism and extension are less clear. We invite contributions from geoscientific studies that constrain the structure and dynamics of all regions of extension with a view to understanding better the manner in which strain and magmatism develop during rifting.

T034: Multidisciplinary studies of failed rift systems

Convenors: Pete Hollings (peter.hollings@lakeheadu.ca), Suzan van der Lee (suzan@earth.northwestern.edu), Irina Artemieva (irina@geo.ku.dk), Carol Stein (cstein@uic.edu)

This session explores current understanding of failed continental and oceanic rifting events in the geologic record. Although continents have successfully rifted apart, with extension eventually resulting in seafloor spreading, in many cases continental lithosphere was intruded, thinned, and extended but did not break apart. There is considerable interest in comparing and contrasting rifts to assess how they started, progressed, and either succeeded or failed.Various seismic experiments around the world, including Earthscope studies in central North America, as well as a mineral boom near North America's failed Midcontinent Rift make this session topical.We welcome presentations on this topic from any discipline.

V005: Calderas I: genesis, evolution, and eruption of large silicic magma chambers – petrology and thermal evolution

Convenors: Heather Wright (hwright@usgs.gov), Kathryn Watts (kwatts@usgs.gov), Catherine Annen (catherine.annen@bristol.ac.uk)

A caldera-forming eruption forms the climax of an eruptive sequence. However, not all volcanoes produce caldera-forming eruptions. What factors contribute to the growth and accumulation of large volumes of silicic magma at caldera volcanoes? What are the time scales by which large silicic magmas are assembled and how do they evolve? We invite contributions that focus on petrologic characterization of eruptive sequences at caldera volcanoes, geochemical signatures of growth and evolutionary processes, and models of magma chamber growth and evolution.

V006: Calderas II: collapse dynamics, unrest and resources – understanding caldera structure and development

Convenors: Valerio Acocella (acocella@uniroma3.it), Joan Marti (joan.marti@ictja.csic.es), Peter Lipman (plipman@usgs.gov), Aldelina Geyer (ageyer@ictja.csic.es)

Collapse calderas are associated with the most catastrophic volcanic events that have occurred on Earth. Nevertheless, many aspects of their development remain unclear. Understanding the structure and development of calderas is crucial for predicting their behaviour during periods of unrest and to plan geothermal and ore exploration. This session will address the principal processes accompanying the development of caldera collapse, including: regional tectonic and magmatic context; conditions for caldera formation, evolution and unrest; potential evolution into an eruption; field evidence for syn-eruptive changes in eruption dynamics and vent geometry; and the role of calderas and their associated structures as sources of geothermal energy and metallic ore deposits.

V014: Erupt, rest, repeat: the nature of cyclic behaviour in volcanic volcanic systems

Convenors: Loyc Vanderkluysen (loyc@asu.edu), Barry Voight (voight@ems.psu.edu), Jean-Francois Smekens (jsmekens@asu.edu), Kirsten Chojnicki (kirsten.chojnicki@asu.edu)

Cyclic eruptive activity is common at many active volcanic centers, spanning a wide range of magma compositions and eruptive styles. In particular, cyclic explosive activity provides optimal conditions to understand the subsurface mechanisms that lead to fragmentation and the transition between effusive and explosive regimes, and observe their surface manifestations. Continuing developments in monitoring techniques provide the scientific community with increasing amounts of data documenting these phenomena. We invite contributions that present results from field observations, laboratory experiments, and numerical or theoretical models of cyclic volcanic phenomena, with a special emphasis on multidisciplinary studies.

V016: Geodynamics and geochemistry of orogenic plateau magmatism

Convenors: An Yin (yin@ess.ucla.edu), Jon Davidson (j.p.davidson@durham.ac.uk), Claudio Faccenna (faccenna@uniroma3.it), Iain Neill (iain.neill@durham.ac.uk)

High orogenic plateaux, including those in Tibet, Iran, and the Andes, are major features of convergent plate boundaries. Causes of plateau formation are widely debated involving both lithospheric and asthenospheric processes. Examination of the voluminous, often mantle-derived, igneous rocks commonly associated with plateaux, may provide clues to the relevance of these and other proposed models in governing plateau growth, support, and demise. In this multi-disciplinary session, we invite contributions from the fields of geochemistry, tectonics, geodynamics and geophysics, which shed insights into the links between magmatic activity and the tectonic origin and evolution of orogenic plateaux, both past and present.

V017: Geodynamics of the Yellowstone hotspot and its track, the Snake River Plain Volcanic Field

Convenors: Robert Smith (robert.b.smith@utah.edu), John Shervais (john.shervais@usu.edu)

This half day interdisciplinary session will evaluate the dynamics and evolution of the Snake River Plain volcanic field and Yellowstone hotspot by addressing: (1) Yellowstone crustal magma reservoir and mantle plume structure from seismic data of the EarthScope TA and electrical structure from MT arrays; (2) data from 3 new deep drill holes of the ""Project Hotspot"" and the International Continental Drilling Program in the Snake River Plain that provide information on the composition, geochemistry, and magmatic processes of the YSRP; (3) earthquake complexities related to tectonic-volcanic interaction; and (4) PBO GPS and strainmeter data on volcano related ground motion and intraplate kinematics.

V019: High resolution geochronology

Convenors: Jan Wijbrans (jan.wijbrans@falw.vu.nl), Leah Morgan (l.e.morgan@vu.nl), Roland Mundil (rmundil@bgc.org), Paul Renne (prenne@bgc.org)

Recent advances in geochronology aim to enhance and widely implement the ability to resolve geologic time with accuracy and precision =< 0.1% level. This goal is proving achievable in some cases and further improvement can be envisioned realistically. We invite contributions that will highlight the state of the art in high-precision, high-accuracy radioisotope geochronology including advances in analytical and computational methods. Both methodological studies and applications to any field in the Earth, life, and planetary sciences are welcomed. Though many efforts thus far have emphasized the U/Pb and 40Ar/39Ar radioisotopic dating techniques, contributions dealing with other systems with potential for improved accuracy and precision are encouraged.

V022: Integrated multidisciplinary constraints on composition and structure of the lithospheric mantle

Convenors: Graham Pearson (gdpearson@ualberta.ca), Derek Schutt (derek.schutt@colostate.edu), Charles Lesher (celesher@ucdavis.edu), Constanza Bonadiman (bdc@unife.it)

The work of Earth scientists from a spectrum of disciplines--geophysicists, geochemists, petrologists, and beyond--gives us complementary information that has great potential for telling us about the nature and evolution of lithospheric mantle. However, it is challenging to formally integrate disciplines due to important differences in how various observables sample the mantle, and to what conditions they are sensitive. In this session, we welcome reports of multidisciplinary approaches to constraining the nature of lithospheric mantle, as well as studies that explore the feasibility and limitations of quantitatively combining various data and methods.

V025: Magmatism and global environmental change – contributions

Convenors: Kirsten Fristad (kirsten.fristad@fys.uio.no), Seth Burgess (sburgess@mit.edu), Linda Elkins-Tanton (ltelkins@carnegiescience.edu), Benjamin Black (bablack@mit.edu)

Increasing evidence suggests that magmatism could serve as a plausible trigger for environmental perturbations ranging from climate change to mass extinction events. New data to further test the plausibility, existence, and mechanics of any such causal connection are therefore crucial. This session addresses the possible links between magmatism and changes in atmospheric and ocean chemistry, climate, and ecology on a range of scales from regional to global. Papers are invited across disciplines including but not limited to volcanology, geochemistry, petrology, geochronology, atmospheric sciences, biogeosciences, ocean sciences, and paleomagnetism.

V026: Mantle plumes: origin, dynamics and evolution

Convenors: Matthew Jackson (jacksonm@bu.edu), Paul Hall (phall@bu.edu), Esteban Gazel (egazel@vt.edu)

From the formation of ocean islands to the eruption of large igneous provinces with their attendant environmental effects, thermochemical anomalies in the mantle known as ""plumes"" have played a fundamental role in the evolution of planet Earth. However, decades after their existence was first posited, a comprehensive understanding of these important dynamical features remains elusive. The goal of this session is to bring together a wide range of disciplines to evaluate the current evidence related to the existence and morphology of mantle plumes, their dynamics and evolution, and the consequences of their interaction with Earth's lithosphere. We encourage contributions from geochemistry, petrology, geodynamics, geophysics and seismology.

V029: Metasomatism: geochemistry, petrology, ore deposits, geophysics

Convenors: Igor Villa (igor@geo.unibe.ch), Daniel Harlov (dharlov@gfz-potsdam.de)

Metasomatism played a major role in the formation and evolution of continental and oceanic crust and lithospheric mantle. Metasomatic processes include ore mineralization and mass transport in, and alteration of, subducted oceanic crust and overlying mantle wedge. Fluid-aided mass transfer and subsequent mineral re-equilibration are the two defining features of metasomatism and metamorphism. Fluid flow is coupled with HP rocks such as granulites and eclogites. Present day movement of fluids in mantle and deep-mid crust can be observed by geophysical data such as seismicity and electrical resistivity.This session aims to bring together a diverse group of geologists, specializing and experienced in all aspects of metasomatism.

V032: Monogenetic volcanism

Convenors: Michael Ort (michael.ort@nau.edu), Ian Smith (ie.smith@aucklund.ac.nz), Paul Wallace (pwallace@uoregon.edu), Shane Cronin (s.j.cronin@massey.ac.nz)

In monogenetic systems the interplay of magma supply rate, source processes and tectonic setting dictates whether primitive or evolved magmas rise to eruption. Source and crustal parameters also control the occurence of dispersed plumbing producing long-lived volcano fields. Petrology, geophysics and volcanology help constrain source and rise models. We seek a broad discussion on the interpretation of geochemical, geophysical and geodynamic and volcanological observations of dispersed volcanism from field to individual volcano scale, and timescales from days to Ma. We particularly want to foster discussion on the role of tectonic setting in producing monogenetic volcanoes and derive an integrated understanding of the drivers and hazards of distributed volcanism.

V035: New developments in petrology addressing Precambrian tectonics and environments for life

Convenors: Eugene Grosch (geogene@gmail.com), Olivier Vidal (olivier.vidal@ujf-grenoble.fr)

The nature of crust formation and tectonics in the Precambrian, have major bearing on the habitats available for life. This session will apply a petrological perspective to answer questions such as: the onset of plate tectonics in the Archean; shear-zone and subduction-related fluid processes; the hydrothermal and surface environments that supported early life. These topics will be addressed by recent advances in petrological techniques, modelling and imaging tools (e.g. SIMS, synchrotron, Raman). The session will focus on novel developments in metamorphic petrology, geochemistry, geochronology, and thermodynamic modelling to better understand conditions in the Precambrian including greenstone belts.



Volcanic and Magmatic Studies Group (VMSG) Annual Meeting

Date: Monday, January 7, 2013 — Wednesday, January 9, 2013

Web: http://www.vmsg.org.uk/vmsg-bristol/VMSG%20Bristol%202013%3A%20Home.html

Organising committee: Alison Rust (alison.rust@bristol.ac.uk), Kate Saunders (kate.saunders@bristol.ac.uk), Elena Melekhova (lena.melekhova@bristol.ac.uk), Emma Johnston (glxej@bristol.ac.uk), Jonathan Hanson (jonathan.hanson@bristol.ac.uk), Rose Burden (rose.burden@bristol.ac.uk)



Geological Society of America (GSA) Northeastern Section 48-th Annual Meeting

Date: Monday, March 18, 2013 — Wednesday, March 20, 2013

Location: Bretton Woods, New Hampshire, USA

Web: http://www.geosociety.org/Sections/ne/2013mtg/index.htm

Includes the following session:

T18: Mesozoic igneous features of northeastern North America: magmatic origins and links to tectonic events

 

Convenors: Gregory McHone (greg@earth2geologists.net), John Puffer (jpuffer@andromeda.rutgers.edu), Nelson Eby (g_eby@uml.edu)

 

Several great magmatic events in northeastern North America are recorded by overlapping provinces of Triassic, Jurassic, and Cretaceous dikes, sills, lavas, and plutonic complexes. They provide clues for the origins of mantle basalts, crustal melting, differentiation of magmas, formation of composite volcanoes, and major fissure eruptions with their environmental impacts. In addition the magmatic events are linked to specific tectonic features and Early Mesozoic rift basins of Pangaea as it separated into new continents and opened the Atlantic Ocean. We invite presentations on both specific features and more general models to describe and explain the origins and significance of these Mesozoic magmas and events.



Volcanism, Impacts and Mass Extinctions: Causes and Effects

Date: Wednesday, March 27, 2013 — Friday, March 29, 2013

Web: http://massextinction.princeton.edu/

Organising committee: Gerta Keller (gkeller@princeton.edu), Andrew Kerr (kerra@cf.ac.uk), Norman MacLeod (n.macleod@nhm.ac.uk), Mike Widdowson (m.widdowson@open.ac.uk), Vincent Courtillot (courtil@ipgp.fr), Ashok Sahni (ashok.sahni@gmail.com), Thierry Adatte (thierry.adatte@unil.ch)

This conference brings together researchers across the geological, geophysical, and biological disciplines to assess the state of research into the causes of mass extinction events. The main goal is to evaluate the respectiveroles of volcanism, bolide impacts, sea level fluctuations and associated climate and environmental changes in major episodes of species extinction.

Over the past 30 years considerable research efforts have been directed toward understanding the context and nature of environmental changes that occurred immediately prior to, at, and after the five major Phanerozoic mass extinctions. Important new data and observations have emerged from the fields of palaeontology, stratigraphy, sedimentology, geochronology, geochemistry, mineralogy, volcanology, geophysics, palaeomagnetism and astrophysics. Consequently, a critical review of these data — and their implications with respect to identification of the cause(s) of these eco-evolutionary events — is warranted. The conference is intended to foster a new, collaborative, interdisciplinary approach to resolving outstanding problems in this field.

Invited speakers:

DallasAbbott (Lamont-Doherty Earth Observatory of Columbia University)

Thierry Adatte (Université de Lausanne)

Dave Archibald (San Diego State University)

Howard Armstrong (Durham University)

Mike Benton (University of Bristol)

Samuel Bowring (Massachusetts Institute of Technology)

Vincent Courtillot (Institut de Physique du Globe de Paris, University of Paris)

Linda Elkins-Tanton (Massachusetts Institute of Technology)

Frederic Fluteau (Institut de Physique du Globe de Paris, University of Paris)

Brian Gertsch (Massachusetts Institute of Technology)

Iain Gilmour (The Open University)

Anthony Hallam (University of Birmingham)

Maud Moulin (Institut de Physique du Globe de Paris, University of Paris)

Michael Joachimski (University of Erlangen)

Simon Kelley (University of Aberdeen)

Gerta Keller (Princeton University)

Andrew Kerr (Cardiff University)

Christian Koeberl (University of Vienna)

Norman MacLeod (Natural History Museum)

William Napier (Cardiff University)

Jozsef Palfy (Eötvös University)

Paul Renne (University of California, Berkeley)

Ashok Sahni (Punjab University)

Andrew Saunders (University of Leicester)

Stephen Self (The Open University)

Robert Spicer (The Open University)

John Warme (Colorado School of Mines)

Mike Widdowson (The Open University)

Paul Wignall (University of Leeds)

 



European Geosciences Union (EGU) General Assembly

Date: Sunday, April 7, 2013 — Friday, April 12, 2013

Location: Austria Center Vienna, Vienna, Austria

Web: http://www.egu2013.eu/home.html

Includes the following session:

GMPV38: Scientific drilling and geological research in the Barberton Greenstone Belt

Convenors: Allan Wilson (allan.wilson@wits.ac.za), Harald Strauss (hstrauss@uni-muenster.de), Gordon Chunnett (gchunnett@yahoo.com), Paul Mason (p.mason@uu.nl)

This session will present the results of recent drilling projects and associated supporting studies in the Archean Barberton Greenstone Belt of South Africa. Drilling provides compete and fresh sections of volcanic and sedimentary rocks that help to unravel the complexities of Archean magmatism, tectonics, sedimentary processes, nature of the atmosphere and oceans, and the habitat of early life. Contributions are encouraged relating to all drilling activities past and present, including the Barberton Greenstone Belt Drilling Project, recent ICDP- sponsored drilling and preparatory research concerning possible future programs. Multidisciplinary studies involving geological, geophysical and geochemical approaches will be highlighted. Preliminary work that includes documentation of the lithology, structures, mineralogy and chemical compositions of recently recovered core and description of future projects will also be included.



Institute on Lake Superior Geology (ILSG) Annual Meeting

Date: Thursday, May 9, 2013 — Friday, May 10, 2013

Location: Houghton, Michigan, USA

Web: http://www.lakesuperiorgeology.org/Houghton2013/index.html

Includes the following fieldtrips:

Geologic overview of the Keweenaw Peninsula, Michigan

Leaders: Ted Bornhorst (tjb@mtu.edu), Bob Barron (rjbarron@mtu.edu)

Date: 8th May

This field trip will provide a geologic overview of the Keweenaw Peninsula from Houghton to Copper Harbor. The trip will visit sites including all of the major Midcontinent Rift related bedrock units and the glacial overburden. The Keweenaw Peninsula is well known for hosting stratiform native copper deposit hosted by tops of rift-filling subaerial basaltic lava flows and interflow coarse clastic sedimentary rocks. The trip will visit one or more rock piles from now closed mines. This trip will be of easy difficulty.

Geology of the Porcupine Mountains – a late Keweenawan central volcano complex, Michigan

Leaders: William Cannon (wcannon@usgs.gov), Laurel Woodruff (woodruff@usgs.gov), Klaus Schulz (kschulz@usgs.gov), Suzanne Nicholson (swnich@usgs.gov)

Date: 11th May

The Porcupine Mountains in the western upper peninsula of Michigan are underlain by andesitic to rhyolite volcanic rocks and mantling sediments that formed in a central volcano within the Midcontinent Rift central graben at the close of Midcontinent Rift magmatism. Participants will overnight (Friday night) in Silver City at the edge of Porcupine Mountains State Park and can drive personal vehicles to Silver City to have a head start home at the end of the trip. Transportation will be provided as needed from Houghton to Silver City. The trip will depart from Silver City and spend the day Saturday examining the various rock types of the area. Logistical details will be provided at a later date.



American Geophysical Union (AGU) Meeting of the Americas

Date: Tuesday, May 14, 2013 — Friday, May 17, 2013

Location: Cancun, Mexico

Web: http://moa.agu.org/2013/

Includes the following session:

GP08: Paleomagnetic studies for the reconstruction of tectonic processes

Convenors: Francesca Cifelli (francesca.cifelli@uniroma3.it), Belen Oliva-Urcia (bolivia@unizar.es), Valerian Bachtadse (b8adse@gmail.com), Juan Jose Villalain (villa@ubu.es)

In the last decades, paleomagnetism has been increasingly and satisfactorily used as a fundamental tool to assess the kinematics of many active deformation zones.This session is intended to motivate researchers in presenting data and applications of paleomagnetic studies to tectonic reconstructions. Contributions describing the integration of paleomagnetic, tectonic, exhumation rate (i.e., fission tracks) and GPS data to compare the long-term history and the present-day kinematics in actively deforming areas are encouraged. Paleomagnetic studies that reconstruct the kinematics of geological structures at different scales, together with magnetostratigraphic studies for the timing of tectonic events, are also very welcome.



Rodinia 2013: Supercontinental Cycles and Geodynamics Symposium

Date: Monday, May 20, 2013 — Friday, May 24, 2013

Location: Lomonosov Moscow State University, Moscow, Russia

Web: http://www.rodinia-2013.ru/

Since the 1.0 Ga supercontinent Rodinia was recognized and mapped, it has become a milestone for understanding of Earth's evolution both in the Precambrian and in the Phanerozoic, and global-scale cyclic geodynamics.

To continue this global debate, the Faculty of Geology of the Lomonosov Moscow State University, Russia will organize an international scientific symposium entitled “Rodinia2013: Supercontinental Cycles and Geodynamics” in Moscow on May 20 to 24, 2013.

The Symposium will focus on new data on the formation, configuration and break-up of Rodinia, its precursors and successors, and related geodynamics processes.

Contributions from all aspects of geology, tectonics and geodynamics, including geochemistry/petrology, basin analysis, geochronology, orogenic studies, paleomagnetism, and global LIP/plume record, metallogeny and geodynamic modeling of Precambrian and Phanerozoic paleogeographies and processes, are welcome.

General email: rodinia2013.msu@gmail.com

Convenors: Natalia Lubnina (natlubnina@yandex.ru), Svetlana Bogdanova (svetlana.bogdanova@geol.lu.se), Zheng-Xiang Li (z.li@curtin@edu.au), Sergei Pisarevskiy (sergei.pisarevskiy@curtin.edu.au), Dmitry Puscharovsky, Richard Ernst (richard.ernst@ernstgeosciences.com), Alexander Slabunov (slabunov@krc.karelia.ru), Ludmila Zolotaya

Includes a post-conference fieldtrip (25th-29th May):

The five days field excursion to four geological landmarks in Russian Karelia.

1. The Mesoproterozoic (1.50-1.45 Ga) magmatic province, including:
- The Valaam subalkaline gabbro-dolerite sill;
- The Sortavala Fe-dolerite (’sortavalite’) dyke swarm;
- The Salmi olivine basaltic flows.

2. The Palaeoproterozoic cross-bedded quartz sandstone (The Shoksha Formation, ca.1.80 Ga) and the Ropruchey gabbro-dolerite sill.

3. The Palaeoproterozoic (ca. 2.10 Ga) Large Igneous Province, including the Jatulian Girvas volcano (diatreme, volcanic pipe, lava flows and breccias) and associated sediments.

4. The Neoarchaean Onega enderbite-charnockite complex (2.73-2.70 Ga) and the Palaeoproterozoic mafic intrusions, including the 2.50 Ga Shala dyke.



Geological Association of Canada-Mineralogical Association of Canada (GAC- MAC) Joint Annual Meeting

Date: Wednesday, May 22, 2013 — Friday, May 24, 2013

Location: Winnipeg Convention Centre, Winnipeg, Manitoba, Canada

Web: http://gacmacwinnipeg2013.ca/index.html

Includes the following sessions:

SS-8: Testing links among large igneous provinces, iron formations, and volcanogenic massive sulfide deposits

Convenors: Andrey Bekker (bekker@cc.umanitoba.ca), Richard Ernst (richard.ernst@ernstgeosciences.com), Wouter Bleeker (wouter.bleeker@nrcan.gc.ca)

Emplacement of Large Igneous Provinces (LIPs) has been linked to mantle plume events. It has been also argued that submarine hydrothermal activity associated with mantle plume events contributed to enhanced delivery of base metals, iron and manganese to the oceans, favouring formation and preservation of VMS deposits in back-arc settings and iron and manganese deposits on continental shelves. Growing age resolution for LIPs, IFs, and VMS deposits allows now to test temporal association among mafic to ultramafic magmatic activity and these deposits, as well as explore potential cause-and-effect relationships. Submissions providing temporal resolution on LIPs, IFs, and VMS deposits, dealing with specific deposits and mantle plume events, and exploring cause-and-effect relationships are encouraged.          

SS-9: Layered intrusions: new paradigms and approaches to understanding magmatic processes

Convenors: James Scoates (jscoates@eos.ubc.ca), Jim Miller (mille066@tc.umn.edu)

Layered intrusions have long captivated geologists with their remarkable textures and structures that record the diversity of processes of magma differentiation, recharge, and venting. They are also host to a range of magmatic and hydrothermal mineral deposits whose formation is intrinsically tied to the emplacement and crystallization histories of these bodies and their interaction with country rock. Recent progress in concepts concerning the evolution of layered intrusions is based on integrated studies involving field observations, textural interpretations, experiments, fluid dynamic modeling, and geochemistry and geochronology. Contributions on all subjects relevant to advancing our understanding of processes involved in the development of layered intrusions are strongly encouraged.    

Also includes the following fieldtrip:

Neoarchean mafic-ultramafic intrusions in the Bird River Greenstone Belt: tectonic setting and economic significance

Leaders: Paul Gilbert (paul.gilbert@gov.mb.ca), James Scoates (jscoates@eos.ubc.ca), Jon Scoates, Eric Yang (eric.yang@gov.mb.ca), Caroline Mealin (cx_mealin@laurentian.ca), Michel Houle (michel.houle@nrcan.gc.ca), Carey Galeschuk (cg@mustangminerals.com)



The Great British Tertiary Volcanoes: Exploring the Palaeogene Centres of Syke and Rum (Fieldtrip)

Date: Monday, May 27, 2013 — Saturday, June 1, 2013

Location: Isle of Skye and Isle of Rum, Inner Hebrides, UK

Web: http://www.geolsoc.org.uk/en/Events/The Great British Tertiary Volcanoes Exploring the Palaeogene centres of Skye and Rum.aspx?ec_trk=followlist&ec_trk_data=Events

The Geological Society of London is pleased to present this fieldtrip to the Northwest Highlands of Scotland as a contribution to the celebration of the 125th anniversary of the Geological Society of America.

The igneous centres of the NW Highland and Islands of Scotland, have provided the starting point for much of our understanding of petrology. Classic studies like that of Harker (Skye) and Emeleus (Rum), have unravelled the inner workings of volcanic plumbing systems and their products. This trip, based on the Isle of Skye, explores two of these great igneous centres, by foot and boat and will look at layered igneous rocks, sills/dykes, lava flows and explosive volcanism, amongst the backdrop and beauty of the inner Isles of Skye and Rum. Everything from textures to the wide expanse of flood basalts and beyond will be covered, with something for everyone’s volcanic tastes.

Itinerary outline

Monday 27 May: Travel from Inverness and arrive in Portree, Isle of Skye.
Tuesday 28 May: Trotternish peninsular, sediments, shallow intrusions, lavas and landslides (including Duntulm Castle).
Wednesday 29 May: The Central Cullins and boat trip along cliffs, visiting the inside of the Skye volcano (with seals and other wildlife).
Thursday 30 May: Lavas of Talisker Bay and North West Skye, including distillery tour.
Friday 31 May: A taste of Rum....Day trip to the Isle of Rum igneous centre!
Saturday 1 June: Travel back to Inverness with scenic stops and castles en route.

Contact: Naomi Newbold (naomi.newbold@geolsoc.org.uk)



Roof of the World – Joint Geological Society of China-Geological Society of America (GSC-GSA) Meeting

Date: Monday, June 17, 2013 — Wednesday, June 19, 2013

Location: Jinjiang Hotel, Chengdu, Sichuan Province, China

Web: http://www.geosociety.org/meetings/2013china/

Includes the following session:

A-5: Deep Earth processes through geochemistry

Convenors: Youxue Zhang (youxue@umich.edu), Yigang Xu (yigangxu@gig.ac.cn), Jianping Zheng (jpzheng@cug.edu.cn)

Petrological and geochemical studies often shed light on deep Earth processes. For example, petrology and geochemistry of large igneous provinces and hotspots may reveal mantle signature from the core-mantle boundary, and petrology and geochemistry of ultra-high-pressure metamorphic rocks can provide information on subduction and exhumation. This session will focus on solid Earth geochemistry, including igneous and metamorphic petrology, experimental petrology, trace element and isotope geochemistry, and mineral physics, and their applications to understand deep (from crust to the core-mantle boundary) Earth processes.

Invited speakers: Roberta Rudnick (University of Maryland), Yingwei Fei (Carnegie Institution of Science), Hongfu Zhang (Chinese Academy of Sciences)



International Association of Volcanology and Chemistry of the Earth’s Interior (IAVCEI) 2013 Scientific Assembly: Forecasting Volcanic Activity

Date: Saturday, July 20, 2013 — Wednesday, July 24, 2013

Location: Kagoshima, Japan
Web: http://www.iavcei2013.com/index.html

Includes the following session:

1-2: Frontiers in large igneous provinces research: a tribute to the life and career of John Mahoney

Convenors: Loyc Vanderkluysen (loyc@asu.edu), Marissa Tejada, Millard Coffin (m.coffin@noc.soton.ac.uk)

Large igneous provinces (LIPs) are the largest manifestations of volcanism on Earth. They are anomalous both in terms of the volume and length of lava flows erupted at the surface and in terms of the scale of mantle melting necessary to produce them. They are also thought to have widespread impact on climate and the environment. This session would welcome all contributions to LIP research, with particular emphasis on:

  • developments in the modeling of thermochemical plumes
  • geophysical imaging of LIPs and their mantle source
  • petrology and geochemistry of LIPs and implications for the composition of the mantle
  • internal architecture and emplacement of LIPs
  • recent discoveries from ocean and continental drilling programs
  • climatic and environmental impacts of LIPs
  • planetary LIPs and implications for the early Earth


23-rd Annual VM Goldschmidt Conference

Date: Sunday, August 25, 2013 — Friday, August 30, 2013

Location: Firenze Fiera Congress Centre, Florence, Italy

Web: http://goldschmidt.info/2013/index

Includes the following sessions:

01e: Causes of Phanerozoic mass extinctions: impacts vs. large igneous provinces vs. others?

Convenors: Fred Jourdan (f.jourdan@curtin.edu.au), Andrea Marzoli (andrea.marzoli@unipd.it), Simonetta Cirilli (simocir@unipg.it)

The history of life on Earth is punctuated by several instances of sudden drops in biodiversity where a large number of species were wiped out, followed by biotic recovery, rapid evolution and dramatic shifts in dominant life forms. Though this phenomenon is well known, the root cause(s) of these mass extinctions is/are yet unsolved and controversial. Multiple causes have been advanced to explain sudden extinctions. Currently, the two dominant contenders are high velocity extraterrestrial bolides and large volcanic eruptions. Discussions of these two hypotheses have been recently quite polarized. Nevertheless, critical to evaluate the potential role of volcanism and asteroid impact (as well as other hypotheses) in causing mass extinctions are (1) precise temporal correlations with the stratigraphic boundaries, (2) well understood mechanisms that could alter Earth’s climate (e.g. gases from target rock vaporization or volcanogenic emission) and (3) effects of the climate changes on the biosphere. In this session, we are encouraging submission from proponents of the volcanism, asteroid impact, and any other mechanisms that could potentially explain the Phanerozoic mass extinctions. In particular, we are seeking contributions from stratigraphy, geochronology, geochemistry, physical modelling and climate studies.

Keynote speaker: Paul Wignall (University of Leeds)

06f: Continental magmatic pipeline: from crustal roots to the surface

Convenors: Karl Cooper (kmcooper@ucdavis.edu), Jonathan Miller (jonathan.miller@sjsu.edu), Josef Dufek (josef.dufek@eas.gatech.edu)

This session will focus on magmatic processes in continental sectors and their role in continental crustal evolution, addressed through a variety of approaches including petrological studies, mineral chemistry and geochronology, and numerical and/or laboratory modeling of magmatic systems. Broad topics covered in this session will include the role of deep vs. mid- to shallow-level magmatic plumbing systems in controlling silicic magmagenesis and/or the composition of continental crust and the relationship of the thermal structure and chemical differentiation of the continents. We welcome submissions covering diverse topics and approaches within this broad context, including for example: multi-disciplinary studies combining textures, chemistry, and ages, including mineral chemistry and geochronology; the role of crystal mush vs. solidified magmas (i.e., thermal histories of reservoir systems); magma mixing processes and efficiency; thermobarometry of crystals and magmas; and evidence for silicic magmagenesis by deep-seated vs. upper-crustal differentiation processes.

11c: Crustal assimilation during magma emplacement

Convenors: Luigi Dallai (dallai@igg.cnr.it), Valentin Troll (vrtroll@gmail.com)

The chemical compositions of plutonic and/or volcanic rocks (solidified magma) are generally used to constrain the compositions of the source from which the magmas were originally formed, and the physical conditions of melt generation. However, the compositions of magmas change as they ascend through the lithosphere in response to closed-system (fractional crystallization), and/or open-system (crustal contamination, magma mixing) behavior of the igneous bodies. The session focuses to the mechanisms producing chemical as well as isotopic variations, in order to resolve mantle vs. crustal contributions, and to quantify the elemental fluxes associated with such processes. The fundamental question to be addressed is how and to what extent the chemistry of igneous systems reflects source composition, or it has been modified during their ascent to shallow level magma reservoirs and volcanic extrusions/explosions. We therefore welcome insights provided by the re-interpretation of data from classical measurements and by novel isotope-geochemical techniques, and their meaning in the geological framework.



Geological Society of America (GSA) 125-th Annual Meeting

Date: Sunday, October 27, 2013 — Wednesday, October 30, 2013

Location: Colorado Convention Center, Denver, Colorado, USA
 
Includes the following sessions:
 
T238: New insights into Triassic-Jurassic transition events and end-Triassic mass extinction
 
Convenors: Rowan Martindale (rmartindale@fas.harvard.edu), Morgan Schaller (schaller@rci.rutgers.edu), Jessica Whiteside (j.whiteside@soton.ac.uk)
 
Interdisciplinary studies allow the timing and synchronicity of Triassic-Jurassic transition events to be constrained to near-millennial timescales. Research in paleontology, sedimentology, geochemistry, volcanology, radioisometric dating, and C-cycle modeling, and comparisons with similar events are encouraged.
 
T258: The pulse of the Earth: episodic and periodic events on timescales of ≥10 million years
 
Convenors: Kent Condie (kcondie@nmt.edu), Michael Brown (mbrown@umd.edu), Stephen Meyers (smeyers@geology.wisc.edu)
 
This session will focus on our understanding of Earth events on timescales of ≥10 million years, including, but not limited to, core, mantle, crust, hydrosphere, cryosphere, biosphere, and atmosphere; impact events, orogenic events, LIPs, and supercontinent cycles.
 


Large Igneous Provinces of Asia, Mantle Plumes and Metallogeny

Date: Thursday, November 7, 2013 — Monday, November 11, 2013

Location: Hanoi, Vietnam
 
Themes of the symposium:
 
Large igneous provinces (LIPs) in Asia and adjacent regions
Asian LIP geodynamics in relation to global tectonics
LIP-related mineral resources and their economic implications
 
Co-chairs:
 
 


American Geophysical Union (AGU) Fall Meeting

Date: Monday, December 9, 2013 — Friday, December 13, 2013

Location: Moscone Center, San Francisco, California, USA
 
Includes the following sessions:
 
DI13A: Linking the Earth's surface with the deep interior: comparing predictions and observations of mantle plumes
 
Convenors: Maxim Ballmer (ballmer@hawaii.edu), Cinzia Farnetani (cinzia@ipgp.fr), Anthony Koppers (akoppers@coas.oregonstate.edu), Esteban Gazel (egazel@vt.edu)
 
Mantle plumes and alternative forms of mantle upwellings provide a direct window into the composition and dynamics of the Earth's deep interior. Their composition and dynamics are explored with a variety of geophysical and geochemical methods. In this session we invite contributions from seismology, geochemistry, petrology, tectonics and geodynamics on topics such as: progress in seismic imaging of mantle upwellings, understanding plume motions in the convective mantle, exploring possible links between lower mantle structures and active hotspots, constraining the origin of geochemical zonation of hotspot lavas, and evaluating the role of shallow melting processes on lava compositions.
 
V11C: Ocean islands and large igneous provinces
 
Convenors: James Day (jmdday@ucsd.edu), Jasper Konter (jasper@geo.utep.edu), Matthew Jackson (jackson@geol.ucsb.edu)
 
Despite temporally diminutive volume relative to mid-ocean ridge basalts, studies of large igneous provinces (LIP) in oceans and continents and ocean island basalts (OIB) inform on mantle evolution. LIP can represent short-duration high-productivity magmatism and some OIB require thermal/chemical mantle anomalies. Thus, OIB/LIP may require a plume source. This session aims to advance understanding of OIB/LIP magmatism. Specifically, what can OIB/LIP tell us about mantle processes, domain ages, and compositional variability? What significance do end-members (c.f., PREMA, EM, HIMU) hold in OIB and are they present in LIP? Can the timing and mass flux of outer core, subducted components and/or metasomatism into OIB/LIP mantle sources be quantified?
 
V31F: Permian-Triassic environmental and climatic extremes and biotic responses
 
Convenors: Sverre Planke (planke@vbpr.no), Samuel Bowring (sbowring@mit.edu)
 
The end-Permian is Earth's most severe extinction event and is associated with rapid global warming, perturbation of the carbon cycle, and oceanic acidification. The Siberian Traps LIP is commonly invoked as the main trigger. In this session, we invite a broad range of contributions with focus on the end-Permian and early Triassic including: plate-tectonics and geodynamics; rates, dates and chemical evolution of magmatism; volumes and geochemistry of volcanic and metamorphic gases; geochemical and environmental changes; climate evolution: data and models; paleobiology of extinction and recovery. We encourage experts from disparate fields to share new ideas to understand this singular event in Earth history.
 
V33F: Magma plumbing, transport and eruption at basaltic volcanoes
 
Convenors: Marie Edmonds (medm06@esc.cam.ac.uk), Bruce Houghton (bhought@soest.hawaii.edu), Jacopo Taddeucci (jacopo.taddeucci@ingv.it)
 
Improved volcano monitoring and data analysis present expanded possibilities for studying volcanic processes, especially those related to magma storage and transport. In addition to improved data streams, increasingly important is development of numerical and physics-based models. Frequent unrest at hotspot volcanoes provides important opportunities for studying magma plumbing systems using new data and modeling approaches. We welcome observations, interpretations, and models of transport and plumbing from hot spot volcanoes worldwide, and recent insights into factors influencing behaviors at individual volcanoes. Particularly welcome are approaches that cross disciplinary boundaries, as well as comparative studies of different volcanoes.
 


Volcanic and Magmatic Studies Group (VMSG) Annual Meeting

Date: Sunday, January 5, 2014 — Wednesday, January 8, 2014

Location: John McIntyre Conference Centre, University of Edinburgh, Edinburgh, Scotland, UK

Web: http://www.vmsg.org.uk/vmsg-edinburgh/

Organising committee: John Stevenson (john.stevenson@ed.ac.uk), Evgenia Ilyinskaya (evgenia@bgs.ac.uk), Jennifer Brooke (jennifer.brooke@ed.ac.uk), Kay Smith, Godfrey Fitton (godfrey.fitton@ed.ac.uk), Madeleine Berg (maddy.berg@ed.ac.uk), Kate Saunders (kate.saunders@ed.ac.uk), Charlotte Vye-Brown (cvye@bgs.ac.uk), Darren Wilkinson (d.j.wilkinson@ed.ac.uk)



Geological Society of America (GSA) South-Central Section 48-th Annual Meeting

Date: Monday, March 17, 2014 — Tuesday, March 18, 2014

Location: University of Arkansas, Fayetteville, Arkansas, USA

Web: http://www.geosociety.org/sections/sc/2014mtg/

Includes the following symposia session:


S3. Late Cretaceous tectonics, magmatism, and sedimentation of the South-Central region

Convenors: Bob Stern (rjstern@utdallas.edu), Peter Clift (pclift@lsu.edu), Asish Basu (abasu@uta.edu)

For the first 17 million years of the Late Cretaceous epoch (Cenomanian, Turonian, and Coniacian, and Santonian; 100–83.5 Ma) the south-central region of what is now the United States was affected by igneous activity. We invite geoscientists with different perspectives on the tectonics, igneous activity, and sedimentation of this enigmatic time period to share their insights and explore what might have been responsible for this regional unrest. Presentations that explore manifestations of unrest during this time interval both in the region and elsewhere around the globe are welcome.



Geological Society of America (GSA) North-Central Section 48-th Annual Meeting

Date: Thursday, April 24, 2014 — Friday, April 25, 2014

Location: Lincoln, Nebraska, USA

Web: http://www.geosociety.org/Sections/nc/2014mtg/index.htm

Includes the following theme sessions:


Carbonatites and other alkalic rocks

Convenors: Richard Kettler (rkettler1@unl.edu), Philip Verplanck (plv@usgs.gov), Benjamin Drenth (bdrenth@usgs.gov)


The Midcontinent Rift System and beyond: new developments in central North American Precambrian geology

Convenors: Benjamin Drenth (bdrenth@usgs.gov), Randy Keller (grkeller@ou.edu), Joshua Feinberg (feinberg@umn.edu



European Geosciences Union (EGU) General Assembly

Date: Sunday, April 27, 2014 — Friday, May 2, 2014

Location: Austria Center Vienna, Vienna, Austria

Web: http://www.egu2014.eu/home.html

Includes the following sessions:


GMPV20 Granites - Archaean to present

Convenors: Jean-Francois Moyen (jean.francois.moyen@univ-st-etienne.fr), Tracy Rushmer, Michael Brown (mbrown@umd.edu)

Granitoids are the dominant component of the continental crust. This session examines all aspects of granite petrology and geochemistry: the formation and extraction of melts; the processes that control the evolution from melt to granite; the emplacement, cooling and textural development of granites; the ore systems associated. Contributions from the fields of experimental petrology, geochemistry, mineralogy, field studies, etc. are welcome in this session. A particular focus of this session is the long term evolution of granitic magmatism, from the past to the present.


GMPV21/TS7.9 Interplay of magmatism and plate tectonic processes in a complex geodynamic setting - case studies in the Mediterranean and surrounding regions

Convenors: Szabolcs Harangi (szabolcs.harangi@geology.elte.hu), Michele Lustrino (michele.lustrino@uniroma1.it), Prelevic Dejan (prelevic@uni-mainz.de)

Can plate-tectonic concepts explain the origin of the magmas and the style of magmatism? Can our models on magma generation and evolution be used to understand the geodynamic evolution of an area? In the Mediterranean region a wide range of magmas (from strongly silica undersaturated carbonatites, silico-carbonatites and melitilites to strongly silica-oversaturated rhyolites) erupted for the last 50 Myr. They are related to a range of tectonic processes such as continental rifting and drifting, lithospheric boudinage, back-arc basin opening, formation of volcanic arcs and orogens, all of these linked in some way to the convergence between African and Eurasian plates and the associated micro-plates. Although there have been rapidly growing petrologic and tectonic models a number of highly controversial questions still remain. In this session we aim discussing the state-of-art particularly focusing on the origin of the magmas in this complex geodynamic setting.

We encourage the submission of contribution mostly in the following key issues: (1) Origin of magmas with ‘subduction signature’ in a post-collision setting: how such magmas can form without coeval subduction? (2) Origin of the alkaline sodic magmas in orogenic areas following or partly overlapping the calc-alkaline magmatism: are there any common points in the petrogenesis of the alkaline sodic magmas in the Mediterranean area and the western and central Europe rift zones? (3) Structural controls on the magmatism in complex areas: is it plate-tectonic controlled or deep mantle process controlled? (4) Presence of carbonatites and carbonate-rich igneous rocks: are these exotic compositions coming from the deep mantle or are the results of a normal CO2-bearing upper mantle?


GD3.4/GMPV27/SM6.16 Plumes and hotspots: paradigms, models, and implications

Convenors: Carole Cordier (carole.cordier@ujf-grenoble.fr), Nicholas Arndt (nicholas.arndt@ujf-grenoble.fr), Anne Davaille

This session will focus on the origin of magmatism in intraplate tectonic settings. Questions to be discussed include whether such magmas form in mantle plumes or by alternative mechanisms; the nature, composition, temperature and other physical characteristics of the source; the depth of instigation, the structure, and the dynamics of plumes, etc. Contributions from the fields of geochemistry, petrology, volcanology and geodynamics will be welcome.


GMPV33/TS3.5 Physics of volcano plumbing systems

Convenors: Olivier Galland (olivier.galland@fys.uio.no), Steffi Burchardt, Eoghan Holohan (holohan@gfz-potsdam.de), Matthieu Kervyn (makervyn@vub.ac.be), Benoit Taisne

Volcanic systems evolve through the interaction of numerous processes governing the ascent, emplacement and eruption of magma. These highly-dynamic processes operate and interlink on scales of millimetres to kilometres, from the Mantle to the Earth’s surface, and involve complex physics that are challenging to tackle. Understanding the physics of volcanic systems, whether single edifices or volcanic fields, is nonetheless crucial for forecasting the location, style and violence of volcanic eruptions, and for providing accurate hazard and risk assessments.

This session aims to bring together those who address the physical and temporal development of sub-volcanic and volcanic phenomena by using field or geophysical observations, theoretical or analytical solutions,, and experimental or numerical models . This session includes, but is not restricted to, the following topics:

  • Physics of melt segregation in magmatic sources;
  • Fluid mechanics of crystal-bearing melts;
  • Fracture mechanics in rocks related to dyke, sill and cone sheet emplacement;
  • Deformation of both magma and host rock related to pluton and laccolith emplacement;
  • Effects of regional-tectonics on intrusions, edifices and volcanic fields;
  • Prediction of volcanic vent location and distribution;
  • Fragmentation of the magma and the host rock during magmatic and phreatomagmatic explosions;
  • Dynamics of volcanic jets and plumes;
  • Depositional processes in turbulent flows.

 

This session is process-oriented, and it aims to trigger cross-disciplinary interactions. We therefore strongly encourage comparisons and validation of modelling results with field and/or geophysical observations, as this is a crucial step toward fully unravelling the complex processes beneath, within and upon volcanoes.


GMPV41/SSP4.8 Mass extinctions and rapid global warming in deep time

Convenors: Sverre Planke (planke@vbpr.no), Wolfram Kuerschner (w.m.kuerschner@geo.uio.no), Richard Ernst (richard.ernst@ernstgeosciences.com), Henrik Svensen

Mass extinction and global warming events in Earth history are often temporarily associated with the eruption of Large igneous provinces (LIPS), e.g. the end-Permian, the end-Triassic, and the Paleocene-Eocene Thermal Maximum (PETM) events. Currently, LIPS and their effects on ancient crises are hot research topics. In this session, we invite a broad range of contributions on Earth crises in the Phanerozoic times. We envision a session where experts from different fields can meet and share new ideas and data that may shed new light on some of the biggest extinction and climate events in Earth history. Session topics include igneous intrusive and extrusive rates and processes, formation and faith of volcanic and metamorphic gases, proxy data from sedimentary sequences, the fossil extinction records, and climate modeling.


GMPV42/ERE3.2/TS3.7 Ore deposits: origin, exploration and mining

Convenors: Nicholas Arndt (nicholas.arndt@ujf-grenoble.fr), Mei-Fu Zhou, John Ludden (jludden@bgs.ac.uk), Christina Wang (wyanang@hotmail.com)

This session will deal with theories of origin of all types of ore deposits as well as techniques used to find and mine them. The emphasis will be on deposits in Europe but contributions on deposits in other regions will be welcome. Issues related to the environmental impact of mining and the "social licence to mine" could also be discussed. Of particular interest is the relationship between mineral deposits and supercontinental cycles. It is well known that some mineralization events were related to assembly and breakup of supercontinents, and deposits in certain regions may be comparable to those in previously adjacent blocks. We welcome contributions about mineral deposits whose formation is linked with either the breakup or assemblage of superconitnents, including Columbia, Rodinia and Gondawanaland. These deposits include stratiform sediment-hosted copper deposits formed in the great oxidization events during the assemble of Columbia, Proterozoic iron-oxide copper gold (IOCG) deposits, orogenic gold deposits, and super plume related magmatic ore deposits.


GMPV48 Mantle roots of deep seated magmas. Origin and evolution of layered mantle lithosphere in different geodynamic settings

Convenors: Igor Ashchepkov (igor.ashchepkov@igm.nsc.ru), Evgenii Sharkov (sharkov@igem.ru), Yana Fedorchuk

Possible topics:

Mantle roots of deep seated magmas. Mntle inclusions in different types of the magmas in intraplate, arc and oceanic island magmatism containing major information about composition, structure and processes of mantle evolution in different tectonic settings. Magmas are sampling mainly their way to the surface and allow to reconstruct the polybaric conduit and chamber systems and wall rocks. The mechanisms of melt mantle magmas transformation during their rise.

Intraplate magmatism allows to judge about composition and thermal conditions and heterogeneity of the mantle and it modification by plume and subduction related melts. Magma compositions depend on structure of magmatic systems, and changing their primary features due to differentiation, mixing and contamination by country rocks.

Key questions are:

  1. Subdivision from the xenoliths sets primary varieties and melt modified types in the different levels of mantle columns. Reconstruction of primary mantle layering and position of the fusion zones primary host rock composition, PTXFO2 conditions, degree of hydration and accounting the chemistry and the physics of intruding melts and deriving fluids.
  2. Dynamics of the developing of melt conduits accounting mantle layering.
  3. Role and mechanism of presiding metasomatism in the transformation of mantle melts.

 

The questions for xenoliths in alkali basalts: (1) depth of the generation of mantle diapirs and mechanism of the emplacement and divergence of the mantle material during uplift, what was the reason of rising of structure of mantle diapirs and possible role of the plumes (or fluid flows) in their generation. The key questions for xenoliths from the cratonic lithosphere are: (1) signs and methods of mantle layering detection changes of mantle and variations of lithology in space in time using petrological, geochemical and geophysical techniques; (2) growth mechanisms of the continental lithosphere accounting the melting of submerging slabs and possible interaction with plums and rising melts; (3) types of mantle metasomatism and their relationship to tectonic setting; (4) mechanisms of melt migration through the lithosphere, etc.

The special interest is also spatial and compositional distribution of magmatic system within large igneous provinces (LIPs); (5) evolution of LIPs in time and its reasons.


GD6.1/GMPV54/SM6.5/TS8.4 The African continent - large-scale crust and mantle geodynamic processes

Convenors: Manel Fernandez (mfernandez@ictja.csic.es), Susan Webb, Jorg Ebbing (joerg.ebbing@ngu.no), Dominique Frizon De Lamotte

The African continent covers a very wide range of tectonothermal ages; it is affected by well-known deep geodynamic processes such as mantle plumes, continental rifting, and Alpine compression; and has recently been the target of regional and global geological and geophysical studies. The aim of this topical session is to bring together the main results of these recently finalized or still ongoing projects/studies to have a multidisciplinary approach on the large-scale geodynamic processes affecting the African continent. Therefore, a wide range of contributions are welcome (geodynamics, tectonophysics, tectonics, geochemistry, numerical and analogue modeling, seismics, seismology, potential fields, geomorphology, etc.) with the only condition that deal with large-scale regions/processes in Africa.

Invited speakers:
Carla Bratenberg
Ray Durrheim
Stewart Fishwick
Francois Guillocheau
Nick White


PS2.6 Volcanism, tectonics, impacts and other geological processes across the solar system

Convenors: Thomas Platz (thomas.platz@fu-berlin.de), Alexander Deutsch (deutsca@uni-muenster.de), Harald Hiesinger, Fred Jourdan (f.jourdan@curtin.edu.au), Matteo Massironi (matteo.massironi@unipd.it), Pascal Allemand (pascal.allemand@univ-lyon1.fr), Stephanie Werner, Paul Bryne (pbyrne@dtm.ciw.edu)

Geological processes such as volcanism, tectonics, and impacts are fundamental to the formation and evolution of the planets, moons, asteroids and comets of our Solar System. These processes are the primary agents responsible for the shaping of planetary surfaces, each of them in different ways and at different rates. For example, asteroids and comets have played a critical role during planetary evolution, by delivering the primary constituents of planetary bodies and by promoting resurfacing via impacts. Volcanic and tectonic processes are efficient mechanisms to reshape planetary surfaces and provide valuable information about planetary interiors and evolution. The study of geological processes in the Solar System is at the crossroad of many scientific disciplines using either in-situ sampling and analysis, remotely sensed data, or experimental and numerical modelling.

This session aims to compile all facets of volcanism, tectonism, impact cratering, and their associated interactions with other geological processes observed in our Solar System. By providing a forum for a broad range of discussions, these observations and interpretations will be investigated and (re)viewed in the light of our current understanding of related processes on Earth. Comparative studies on volcanic/tectonic systems, impact structures, and other processes on Earth using multi-instrumental, remotely sensed, experimental, computational, or field data are particularly welcome.



59-th Institute on Lake Superior Geology (ILSG) Annual Meeting

Date: Thursday, May 8, 2014 — Sunday, May 11, 2014

Location: Franklin Square Inn, Houghton, Michigan, USA

Web: http://www.lakesuperiorgeology.org/Houghton2013/index.html

Includes the following fieldtrips:


Geologic overview of the Keweenaw Peninsula, Michigan

Leaders: Ted Bornhorst

Date: 8th May

This field trip will provide a geologic overview of the Keweenaw Peninsula from Houghton to Copper Harbor. The trip will visit sites including all of the major Midcontinent Rift related bedrock units and the glacial overburden. The Keweenaw Peninsula is well known for hosting stratiform native copper deposit hosted by tops of rift-filling subaerial basaltic lava flows and interflow coarse clastic sedimentary rocks. The trip will visit one or more rock piles from now closed mines. This trip will be of easy difficulty.


Geology of the Porcupine Mountains - a late Keweenawan central volcano complex, Michigan

Leaders: William Cannon, Laurel Woodruff, Klaus Schulz, Suzanne Nicholson

Date: 11th May

The Porcupine Mountains in the western upper peninsula of Michigan are underlain by andesitic to rhyolite volcanic rocks and mantling sediments that formed in a central volcano within the Midcontinent Rift central graben at the close of Midcontinent Rift magmatism. Participants will overnight (Friday night) in Silver City at the edge of Porcupine Mountains State Park and can drive personal vehicles to Silver City to have a head start home at the end of the trip. Transportation will be provided as needed from Houghton to Silver City. The trip will depart from Silver City and spend the day Saturday examining the various rock types of the area. Logistical details will be provided at a later date.



Geological Society of America (GSA) Rocky Mountain Section/Cordilleran Section Joint Meeting

Date: Monday, May 19, 2014 — Wednesday, May 21, 2014

Location: Bozeman, Montana, USA

Web: http://www.geosociety.org/Sections/rm/2014mtg/index.htm

Includes the following sessions:


T3. Precambrian I: Archean and Paleoproterozoic crustal evolution of Western Laurentia

Convenors: David Mogk (mogk@montana.edu), Paul Mueller (pamueller@ufl.edu)

This session will cover all aspects of the earliest creation and growth of the North American continent, including contributions from tectonics, geochemistry, and geochronology; studies of surficial deposits and environments; and the record of earliest life on Earth.


T4. Precambrian II: Meso- and Neoproterozoic evolution of Western Laurentia: in honor of Don Winston

Convenors: Paul Link (linkpaul@isu.edu), Reed Lewis (reedl@uidaho.edu)

This session will cover the continued growth and evolution of the North American continent through the Proterozoic and into the Cambrian, including tectonic reconstructions; petrologic and geochemical additions and modifications; metallogenesis; and evidence of early life, with special attention to the formation and development of the Belt Basin and the succeeding rifted margin. This session is associated with Field Trip 8 (Mesoproterozoic tectonics and sedimentation along the southern margin of the Belt Basin: in honor of Dan Winston).


T6. Yellowstone-Snake River Plain-Columbia River Volcanic Province: geology, petrology, geophysics, and geodynamics

Convenors: Bill Phillips (phillips@uidaho.edu), Dan Moore (moored@byui.edu)

New petrologic, seismic, and geodetic results have reinvigorated debate on the origin of Miocene-Recent volcanism within the Yellowstone-Snake River Plain-Columbia River Volcanic Province. This theme session seeks contributions in the fields of geology (including geologic mapping), petrology, geophysics, and geodynamics. Contributions from throughout the province are encouraged.


T10. The Early Triassic magmatic firestorm of the US and Canadian Cordillera: geochemical, petrological, and tectonic constraints

Convenors: Richard Gaschnig (gaschnig@umd.edu), Genet Duke

The Eocene and Paleocene Epochs were characterized by a widespread flare-up of volcanism and plutonism in the Cordillera, stretching east from central Oregon to South Dakota, north into British Columbia, and south into Colorado and New Mexico. We seek contributions dealing both with the petrology and geochemistry of individual magmatic centers and the larger space-time-composition patterns and links between magmatism and tectonism of this unusual time in the history of the Cordillera.



Geological Association of Canada/Mineralogical Association of Canada (GAC-MAC) Joint Annual Meeting

Date: Wednesday, May 21, 2014 — Friday, May 23, 2014

Location: University of New Brunswick, Fredericton, New Brunswick, Canada

Web: http://www.unb.ca/conferences/gacmac2014/index.html

Includes the following sessions and symposia:


SY4. Environmental and economic significance of gossans associated with mineralization in rifts and large igneous provinces

Convenors: Marie-Claude Williamson (marie-claude.williamson@nrcan.gc.ca), Jeff Harris (jeff.harris@nrcan.gc.ca), Cole Kingsbury

Gossans preserve anomalous concentrations of metals that are routinely investigated in the search for new ore bodies. Under certain conditions, gossans also constitute analogues of mine waste deposits. On a regional scale, the streams, lakes and permafrost that are affected by the unusual mineralogy of gossans provide indicators of environmental impact. This session will highlight recent research on gossans as natural laboratories used in environmental geosciences and metallogeny with special emphasis on their genesis in continental rift settings and flood basalt provinces. We welcome multidisciplinary scientific and technical reports on a wide range of topics including: the mapping of gossans by remote sensing in arid climates and polar regions; mineralogy and geochemistry of surficial deposits; models of development; environmental impacts; and economic geology.  


SY7. Precambrian super-continent cycles: geodynamics and its influence on mineralization

Convenors: Luke Ootes (luke.ootes@gov.nt.ca), Bruce Eglington (bruce.eglington@usask.ca), Kevin Ansdell (kevin.ansdell@usask.ca), Toby Rivers (trivers@mun.ca), Sally Pehrsson (Sally.Pehrsson@nrcan.gc.ca)

Supercontinent amalgamation and fragmentation are surface manifestations of the continued tectonic activity on Earth and were major factors determining the distribution and timing of orogenesis, ore deposit formation and the environments in which life evolved. This theme will bring together cross-disciplinary presentations which investigate the nature and timing of formation and breakup of supercontinents and supercratons Nuna, Rodinia, and Pangea/Gondwana, the influence they have had on mineralization, the structure of Earth as we see it today, changes in the atmosphere and oceans and the development of life.


6. Volcanology: volcanic processes, products and relation to economic resources

Convenors: Rodney Allen (rodney.allen@ltu.se), Harold Gibson (hgibson@laurentian.ca)

Volcanism spans an incredible and fascinating range in age, style, setting and composition, and together with subvolcanic processes is a driving force for the formation of a range of metallic ore deposits, industrial mineral deposits and geothermal energy. In this scientific session we seek contributions from geologists, geochemists, geophysicists and mineral explorationists on all aspects of volcanism and subvolcanic processes, volcanic rocks, high-level subvolcanic intrusions, and their relationships with associated economic resources. 


17. The age of the Earth revisited: high-precision U-Th-Pb geochronology of igneous, metamorphic, and sedimentary processes

Convenors: Sandra Kamo (skamo@es.utoronto.ca), Mike Hamilton (mahamilton@geology.utoronto.ca), Larry Heaman (Larry.Heaman@ualberta.ca), Paul Sylvester (pjsylvester@gmail.com)

Just over 100 years since Arthur Holmes published his seminal book, The Age of the Earth (1913), the precise measurement of geologic time by U-Th-Pb dating is undergoing another revolution. Advances in ID-TIMS, SIMS, and LA-ICPMS methods applied to zircon and other accessory minerals, innovative geochronological applications, and the use of community isotopic tracers and mineral standards, are permitting earth scientists to resolve geological events more precisely, and to ask bold new questions about Earth and solar system evolution. We encourage contributions that highlight the latest advances in analytical techniques, and which integrate multiple methods of investigation. This session is open to studies from a spectrum of U-Th-Pb dating applications including cosmochronology and earliest plate tectonic processes, to investigations of deep crustal development, orogenesis and growth of the continents, provenance studies, the dating of mineral deposits, precise temporal constraints on species evolution and extinction, LIPs and meteorite impact events, and absolute timescale issues that so intrigued Holmes. 


23. Alkaline magmatism and associated mineralizations

Convenors: Anne Sylvie Andre-Mayer (anne-sylvie.andre@univ-lorraine.fr), Michel Jebrak (jebrak.michel@uqam.ca), Daniel Onhenstetter, Anthony Williams Jones (anthony.williams-jones@mcgill.ca)

Alkaline magmatism appears as the key element for the mineral resources of a low-carbon energy world. Major issues remain in the understanding of the genesis of these magma and their associated mineralizations. Recent progresses are based on integrated studies on Archean to recent systems involving field observations, detailed mineralogy, textural interpretations, and geochemistry. Contributions on all subjects relevant to advancing our understanding of processes involved in the development of alkaline magmatism and associated mineralization are welcome to this special session.


Includes the following fieldtrip:


B3. Geology of the Island of Grand Manan, New Brunswick: Precambrian to Early Cambrian and Triassic Formations

Leaders: J. Gregory McHone (greg@earth2geologists.net), Les Fyffe (les.fyffe@gnb.ca)

Duration: 2.5 days  

Maximum: 25

Start Date: Friday, May 23

Cost: $355.00

Shoreline exposures on the scenic Island of Grand Manan in the Bay of Fundy display features of both the ancient Gondwanan margin of the Paleozoic Iapetus Ocean and the Early Mesozoic margin of the modern Atlantic Ocean. The eastern part of Grand Manan is underlain by complexly deformed sequences of volcanic and sedimentary rocks, with recently-determined Neoproterozoic to Cambrian ages. Rifting that opened the Atlantic Ocean stranded this Ganderian fragment of the former Gondwanan continent, and also produced the Grand Manan Basin with Late Triassic flood basalts and sedimentary rocks exposed west of the island’s basin border fault.



Goldschmidt 2014 Conference

Date: Sunday, June 8, 2014 — Friday, June 13, 2014

Location: Sacramento Convention Center, Sacramento, California, USA

Web: http://goldschmidt.info/2014/index

Includes the following sessions:


02c: Compositions of the interiors of the terrestrial planets - causes and consequences

Convenors: James Day (jmdday@ucsd.edu), Radjeep Dasgupta (radjeep.dasgupta@rice.edu)

Planetary interior compositions are fundamentally controlled by the material accreted to form a planet and the physical processes of differentiation. This session aims to draw together experimental petrologists, geochemists, and modelers to discuss the interior compositional constraints for rocky Solar System planets. Topics of interest include - but are not limited to - constraints on the planetary interior compositions based on geophysical and geochemical observations, relative contributions of accretion, magma ocean differentiation versus late, heavy bombardment on the volatile and other trace element budgets and redox state of bulk mantle, the presence and causes of lithologic heterogeneities in mantles, and compositional controls on physical processes occurring on planetary bodies (c.f. plate tectonics, plumes).


05e: Intra-plate magmatism from recycled crust and mantle

Convenors: Andreas Stracke (stracke.andreas@uni-muenster.de), John Lassiter (lassiter1@mail.utexas.edu)

The origin and magnitude of mantle heterogeneity is governed by the nature, extent, and timing of geochemical cycling between the planets’ major silicate reservoirs: the crust, lithosphere, and mantle. The spatial scale and distribution of the geochemically and lithologically diverse materials in the Earth’s mantle is thereby determined by the fluid dynamics of mantle convection. During intra-plate magmatism, partial melting preferentially samples geochemically enriched source components. These enriched components likely represent a variety of materials that have been recycled into the mantle and distributed heterogeneously by a range of mechanisms over Earth’s history. The enriched geochemical signatures observed in intra-plate volcanic rocks may therefore identify the large-scale geochemical processes responsible for continuous silicate Earth differentiation. This session welcomes innovative contributions employing a broad spectrum of analytical and computational methods to study the origin, mode of sampling, and length scale of mantle heterogeneities sampled by intra-plate magmatism.


06a: The scum of the Earth - the composition of the continental crust and mechanisms for its production through time

Convenors: Catherine Chauvel (catherine.chauvel@ujf-grenoble.fr), Roberta Rudnick (rudnick@geol.umd.edu), Bruno Dhuime (b.dhuime@bristol.ac.uk), Oliver Jagoutz (jagoutz@mit.edu)

Mantle melting produces basalts but the continental crust is andesitic on balance. Petrology, geochemistry, geodynamics and geophysics provide insights into how continental crust is extracted from the mantle. In spite of great progress in these fields, the process of crust formation is still enigmatic to a significant extent. How is continental crust made and differentiated? What is our best estimate of continental crust? Why does the crust appear andesitic on average if mantle melting appears to produce basalt? This session is devoted to cross-pollination and integration for the purpose of progressing research in crustal petrogenesis.

Keynote: Peter Cawood (University of St Andrews, UK)


06b: The supercontinent cycle

Convenors: John Goodge (jgoodge@d.umn.edu), Peter Cawood (pac20@st-andrews.ac.uk), Wouter Bleeker (wouter.bleeker@nrcan.gc.ca), Adam Maloof (maloof@princeton.edu)

Supercontinents come and go, causing massive shifts in continental climate, biotope, and geodynamic systems. The episodic existence of supercontinents exerts a fundamental control on secular changes in the Earth system, and may reflect a deeper geodynamic periodicity. This session aims to bring together geodynamicists, petrologists, biogeochemists, sedimentologists, and economic geologists to explore the full spectrum of causes and consequences of supercontinent formation. We propose to focus attention on episodicity gleaned from the geochronological record to assess tectonic and environmental process associated with supercontinent formation over time. How much new crust is generated? Is it long-lived? What mechanisms are involved in supercontinent assembly? How is supercontinent amalgamation manifested by mineral deposits? What are the implications of supercontinent formation on environmental systems in the continental realm? What biogeochemical feedbacks are there between the continents, atmosphere and oceans that influence development of living systems? What’s happening across the remainder of the non-amalgamated surface system (oceans)? What are the effects of supercontinent assembly on seafloor dynamics? How are deep-earth and near-surface processes linked in the deep geologic past? In general, the session will focus on supercontinent assembly, rather than breakup, and the implications of supercontinent formation for geodynamic process, crustal growth history, geochemical and paleoenvironmental linkages across the continent-atmosphere-ocean system, mineral deposit distributions, and periodicity.



1-st International Workshop on Volcano Geology

Date: Monday, July 7, 2014 — Friday, July 11, 2014

Location: Hotel Enotel Lido Funchal, Madeira, Portugal

Web: http://www.iavcei.org/IAVCEI_meetings/MADEIRA/Workshop_Volcano_Geology/W...

Organisers: Antonio Brum da Silveira (antonio.brum@fc.ul.pt), Joan Marti (joan.marti@ictja.csic.es), Susana Prada (susana@uma.pt)

Scientific sessions include:

  • volcano-stratigraphy
  • volcano geochronology
  • geological mapping
  • tectonic structure of volcanic systems
  • construction and erosion on volcanic edifices
  • sedimentology and facies analysis of volcanic deposits
  • petrology and geochemistry of volcanic systems
  • geological aspects of hazard assessment
  • geological interpretation of volcanic unrest


12-th International Platinum Symposium

Date: Monday, August 11, 2014 — Thursday, August 14, 2014

Location: Ural Federal University, Yekaterinburg, Russia

Web: http://conf.uran.ru/default.aspx?cid=12ips##3

Includes the following sessions:


Magma dynamics, cumulates and ore genesis

Convenors: Rais Latypov (rais.latypov@wits.ac.za), Steve Barnes (steve.barnes@csiro.au)

Magmatic ore deposits produced by mafic-ultramafic magmatism (e.g. massive sulphide bodies, chromitite and Fe-Ti oxide layers, platinum group element-rich horizons) are igneous cumulate rocks that are generated by processes of magma differentiation, crystallization and solidification in crustal chambers. Therefore a key to understanding the origin of these deposits and consequently to developing a better strategy for their exploration is the deep knowledge of physico-chemical processes that govern magma evolution in crustal chambers and conduits. This session will emphasize the physical and fluid dynamic aspects of igneous petrology that bear on three major ore-related questions: where are ore deposits located? How did they get there? and how were they produced? The following fundamental aspects of magmatic processes will be addressed by this session: the relative importance of in situ crystallization versus crystal settling in evolving magma chambers and the origin of layering; the role of thermal and compositional convection in magma differentiation; the effects of compaction and post-cumulus melt migration within the cumulate pile on compositional profiles of magmatic bodies; the interactions between resident melt in the chamber and inflowing magma during chamber replenishment events; and the fluid dynamics and emplacement mechanisms of magmas, crystal slurries and emulsions. This session welcomes field, textural, mineralogical, geochemical, isotopic, experimental and numerical examination of igneous intrusions that provide us with new ideas on how magma chambers and conduits work to produce magmatic ore deposits.

Keynote speaker: Christian Tegner


PGE mineralization in mafic-ultramafic intrusions of Russia: geology and petrogenesis

Convenors: Alexey Ariskin (ariskin@rambler.ru), Wolfgang Maier (maierw@cf.ac.uk)

The session will focus on PGE mineralized mafic to ultramafic intrusive complexes of Russia. We invite presentations that provide information on their geology, petrology, mineralogy, and geochemistry and that help to constrain the petrogenesis of the intrusions and their different styles of PGE mineralization. Contributions dealing with sulfide and chromite transport in the parental magmas, and percolation of sulfides and volatiles through the cumulate pile are particularly welcome, as are talks and posters that have implications for exploration targeting, using a variety of techniques and vectors.


PGE-Cu-Ni sulphide-bearing ultramafic-mafic intrusions of the Noril'sk Province: insights into ore genesis and exploration

Convenors: Kreshimir Malitch (dunite@yandex.ru), Chusi Li (cli@indiana.edu)

Despite the long-term study of the ‘Noril’sk-type’ intrusions (e.g., Noril`sk-1, Talnakh and Kharaelakh), they remain a subject of ongoing debate related to their origin. A broad range of different or contradictory ideas for the formation of ore-bearing ultramafic-mafic intrusions in the Noril’sk region has been proposed. These include (a) differentiation of a single magma, (b) emplacement of multiple magmas with distinct compositions, (c) volcanic feeder systems, (d) a crust-mantle interaction model, (e) assimilation and (f) metasomatic models. A common assumption in these models is that the intrusions are coeval with the 250 Ma Siberian flood basalts, which erupted over a period of ~1 Ma or less, despite the fact that the age range of the intrusions is considerably larger. We invite contributions that use mineralogy, petrology, geochemistry, geochronology and structural controls to improve our understanding on the origin of ultramafic-mafic intrusions with different degrees of PGE-Cu-Ni sulphide mineralisation (i.e., economic, subeconomic and non-economic) in the Polar Siberia. New isotope-geochemical data that can be used for the exploration of PGE-Cu-Ni sulphide deposits are particularly welcome.

Keynote speakers: Nicholas Arndt and Nadezhda Krivolutskaya


Includes the following fieldtrips:


Ultramafic-mafic intrusions, volcanic rocks and PGE-Cu-Ni deposits of the Noril'sk Province, Polar Siberia

Date: 1st-8th August

Leaders: Sergey Sluzhenikin (sluzh@igem.ru), Nadezhda Krivolutskaya (nakriv@mail.ru), Oleg Simonov


The Kondyor zoned clinopyroxenite-dunite massif and related platinum placers, Aldan Shield, Siberian Craton

Date: 1st-8th August

Leaders: Vladimir Prihod'ko


Platinum Belt of the Urals: world-class Nizhny-Tagil and Volkovsky massifs and associated ore deposits

Date: 15th-16th August

Leaders: Elena Anikina (elena.anikina@igg.uran.ru), Kreshimir Malitch (dunite2009@mail.ru)


Platinum Belt of the Urals: Kachkanar and Svetly Bor massifs and associated ore deposits

Date: 15th-16th August

Leader: Evgeny Pushkarev (pushkarev@igg.uran.ru)


The Ioko-Dovyren mafic-ultramafic layered intrusion in the Northern Baikal region and associated PGE-Cu-Ni deposit

Date: 15th-25th August

Leader: Evgeny Kislov (evg-kislov@yandex.ru)



14-th Quadrennial International Association on the Genesis of Ore Deposits  (IAGOD) Symposium

Date: Tuesday, August 19, 2014 — Friday, August 22, 2014

Location: Yunan Convention Resort, Kunming, China

Web: http://www.14iagod.org/en/index.asp

Includes the following thematic sessions:


Mineral deposits associated with mafic and ultramafic rocks

Convenors: Chusi Li (cli@indiana.edu), Mei-Fu Zhou (mfzhou@hkucc.hku.hk), Zhaochong Zhang

Keynote speakers: Franco Pirajno, Yan Wang


Igneous activities and metallogeny of the Proterozoic and Paleozoic Belts

Convenors: Steve Piercey (spiercey@sjpgeoconsulting.com), Feng-Jun Nie (nfjj@mx.cei.gov.cn), Sean O'Brien (seanobrien@gov.nl.ca)

Keynote speakers: Jochen Kolb, Feng-Jun Nie



Geological Society of America (GSA) Annual Meeting

Date: Sunday, October 19, 2014 — Wednesday, October 22, 2014

Web: http://community.geosociety.org/gsa2014/home

Includes the following sessions:

T117. Magmas and their sources: a tribute to the distinguished career of Fred Frey

Convenors: Michael Garcia (mogarcia@hawaii.edu), Michael Rhodes (jmrhodes@geo.umass.edu), Rosemary Hickey-Vargas (hickey@fiu.edu)

Fred Frey, 2014 MGPV Distinguished Career Award recipient, has devoted his career to studying magmas, their sources, and formation. We encourage research by those who are inspired by or have worked with this distinguished geoscientist.

P2/T206. Mass extinctions: volcanism, impacts, and catastrophic environmental changes

Convenors: David Bond (d.bond@hull.ac.uk), Gerta Keller (gkeller@princeton.edu), Thierry Adatte (thierry.adatte@unil.ch)

This session explores recent advances in the stratigraphic and geochemical records of mass extinctions and impacts that have seen the impact-kill scenario recede in favor of terrestrial causes that may ultimately derive from massive volcanism.

T6. Birth and death of supercontinents

Convenors: Daniel Pastor-Galan (d.pastorgalan@uu.nl), Brendan Murphy (bmurphy@stfx.ca), William Collins (bill.collins@newcastle.edu.au)

Earth's landmasses amalgamate altogether into supercontinents following a quasi-periodic cycle since the origin of tectonics. This session will review the tectonic evolution of supercontinents from amalgamation to break up at every level of Earth's structure.

T20. Magmatism, tectonics, and metallogeny of the Central Asian Orogenic Belt

Convenors: Wenjiao Xiao (wj-xiao@mail.igcas.ac.cn), Bo Wan (wanbo@mail.iggcas.ac.cn)

This session will provide an international forum for interdisciplinary discussions on accretionary orogenic belts, specifically on the Central Asian Orogenic Belt (CAOB).

T2. Emplacement of upper crustal magmatic intrusions: field studies of laccoliths, sills, and subvolcanic plugs

Convenors: Paul Wetmore (pwetmore@cas.usf.edu), Eric Horsman (horsmane@ecu.edu), Charles Connor (cbconnor@usf.edu), Scott Giorgis (giorgis@geneseo.edu)

This session is focused on the emplacement and melt-host rock interactions of shallow crustal intrusions including sills, laccoliths, and subvolcanic conduits.

Recent advances in igneous processes

Convenors: Sheila Seaman (sjs@geo.umass.edu), Diane Smith (dsmith@trinity.edu)



5-th International Maar Conference

Date: Monday, November 17, 2014 — Saturday, November 22, 2014

Location: National Autonomous University of Mexico, Queretaro, Mexico

Web: http://maar2014.geociencias.unam.mx/

Conference chairs: Gerrardo Carrasco-Nunez (gerardoc@geociencias.unam.mx), Jose Jorge Aranda-Gomez (jjag@geociencias.unam.mx)

Sessions:

  1. Architecture and Evolution of Maars. Geology, Petrology, Geophysics
  2. Environmental studies in Maars - Biology, Limnology, Paleoclimate, Lake sedimentation
  3. Monogenetic Volcanic Fields. Structural and Tectonic Settings, Causes of magmatic and phreatomagmatic activity
  4. Maar Hazards (volcanic, hydrogeologic, subsidence, etc.)
  5. Economic and Cultural Aspects Related to Monogenetic Volcanism. Mineral Resources, Quarries, Tourism, Land Management
  6. Experiments and Modeling of Water-Magma Interactions and Other Physical Processes


American Geophysical Union (AGU) Fall Meeting

Date: Monday, December 15, 2014 — Friday, December 19, 2014

Web: http://fallmeeting.agu.org/2014/

Includes the following sessions:

The geochemical diversity of the mantle inferred from hotspots: five decades of debate

Convenors: Matthew Jackson (jackson@geol.ucsb.edu), James Day (jmdday@ucsd.edu ), Jasper Konter (jkonter@hawaii.edu)

Estimating the durations, rates and depths of magmatic processes

Convenors: Georg Zellmer (g.f.zellmer@massey.ac.nz), Olivier Bachmann (baolivie@ethz.ch), Albrecht Von Quadt (vonquadt@erdw.ethz.ch), Philipp Ruprecht (ruprecht@ldeo.columbia.edu)

Continental volcanic rifted margins

Convenors: Richard Walker (rw175@le.ac.uk), Stephen Rippington (steverippington@gmail.com), Ken McCaffrey (k.j.w.mccaffrey@durham.ac.uk)

Multidisciplinary perspectives on mantle plumes: predictions and observations from source to surface

Convenors: Anna Courtier (courtiea@uww.edu), Anthony Koppers (akoppers@coas.oregonstate.edu), Garrett Ito (gito@hawaii.edu), Nicholas Schmerr (nschmerr@umd.edu



Geological Society of America (GSA) South-Central Section 49-th Annual Meeting

Date: Thursday, March 19, 2015 — Friday, March 20, 2015

Location: Stillwater, Oklahoma, USA

Web: http://www.geosociety.org/Sections/sc/2015mtg/

Includes the following sessions:

T1. East African Rift, Southern Oklahoma Aulacogen, Rio Grande Rift, and other continental rifts: a tribute to the career of G. Randy Keller

Convenors: Mohamed Abdelsalam (mohamed.abdelsalam@okstate.edu), Estella Atekwana (estella.atekwana@okstate.edu), Asish Basu (abasu@uta.edu), Kevin L. Mickus (kevinmickus@missouristate.edu), Robert Stern (rjstern@utdallas.edu)



Geological Society of America (GSA) Northeastern Section 50-th Annual Meeting

Date: Monday, March 23, 2015 — Wednesday, March 25, 2015

Location: Bretton Woods, New Hampshire, USA

Web: http://www.geosociety.org/Sections/ne/2015mtg/index.htm

Includes the following sessions:

T4. Ages and origins of intrusive rocks in the New England Appalachians


Convenors: Dyk Eusden (deusden@bates.edu), Dwight Bradley (dbradley@usgs.gov)

The New England Appalachians are host to intrusive rocks that range in age from Mesoproterozoic to Cretaceous. Recent advances in geochronology, geochemistry, and petrogenesis have shed new light on the origins of these igneous suites, which number at least a dozen. In addition, the list of possible triggers for magma genesis has grown to include not only subduction, crustal thickening, lithospheric extension, and mantle plume activity, but also orogenic collapse, lower-lithosphere foundering or detachment, ridge subduction, and slab breakoff.



European Geosciences Union (EGU) General Assembly

Date: Sunday, April 12, 2015 — Friday, April 17, 2015

Location: Vienna, Austria

Web: http://www.egu2015.eu/

Includes the following sessions:

GMPV3.1 Magmas from the mantle

Convenor: Sally Gibson (sally@esc.cam.ac.uk)

This session focuses on the physio-chemical controls involved in generation of melt from the mantle, including mid-ocean ridges, intraplate and subduction settings. Questions to be discussed include: whether primary melts form in the convecting and/or lithospheric mantle; the temperature and composition of melt source regions; volatile contents; the role of upwelling mantle plumes and/or lithospheric mantle and the overlying crust as a source or control on the nature of surface magmatism. Contributions from the fields of geochemistry, petrology, volcanology, geophysics and geodynamics will be welcome.

GMPV5.5/TS2.9 Volcanic Plumbing Systems: Dynamics of magma transport and emplacement in the Earth’s crust

Convenor: Olivier Galland (olivier.galland@fys.uio.no)

Volcanic plumbing systems evolve through the interaction of numerous processes governing the ascent, emplacement and eruption of magma. These highly-dynamic processes operate and interlink on scales of millimetres to kilometres, from the Mantle to the Earth’s surface, and involve complex physics at the interface between fluid and solid mechanics that are challenging to tackle. Understanding the physics of volcanic plumbing systems is nonetheless crucial for forecasting the location, style and violence of volcanic eruptions, and for providing accurate hazard and risk assessments.

This session aims to bring together those who address the physical and temporal development of volcanic plumbing systems by using field or geophysical observations, theoretical or analytical models, and experimental or numerical models. This session includes, but is not restricted to, the following topics:


- Physics of melt segregation in magmatic sources;
- Fluid mechanics of crystal-bearing melts;
- Fracture mechanics related to dyke, sill and cone sheet emplacement;
- Mechanics of magma and host rock deformation related to pluton and laccolith emplacement;
- Comparative dynamics of igneous and sedimentary intrusions;
- Magma-host rock dynamics during formation of volcanic vents, diatremes and pipes;
- Prediction of volcanic vent location and distribution.

This session is process-oriented, and it aims to trigger cross-disciplinary interactions. We therefore strongly encourage comparisons and validation of modelling results with field and/or geophysical observations, as this is a crucial step toward fully unravelling the complex processes beneath, within and upon volcanoes.

SSP1.4/GMPV6.6 Mass Extinctions,Volcanism, Impacts, and Catastrophic Environmental Changes : where do we stand ?

Convenor: Thierry Adatte (thierry.adatte@unil.ch)

Over the last 30 years considerable research efforts have been directed toward understanding the context and nature of environmental changes that occurred immediately prior to, at, and after the five major Phanerozoic mass extinctions. Actually, earth volcanic activity linked to LIPS is one of the two leading scenarios proposed to explain the pattern of mass extinctions in the Phanerozoic, the other involving asteroid impacts However, the actual mechanisms by which either impacts or LIP eruptions can induce mass extinction remain controversial. This session will provide a platform to evaluate the current records of volcanism and impacts and associated environmental changes across Earth’s major mass extinction events.

PS9.1/GM10.2/GMPV7.11/TS9.6 Volcanism, tectonics, impacts and other geological processes across the Solar System

Convenor: Stephanie Werner (stephanie.werner@fys.uio.no)

Geological processes such as volcanism, tectonics, and impacts are fundamental to the formation and evolution of the planets, moons, asteroids and comets of our Solar System.

This session invites contributions to all facets of geological processes observed in our Solar System. Comparative studies on Earth and other planetary bodies using multi-instrumental, remotely sensed, experimental, computational, or field data are particularly welcome.



American Geophysical Union-Geological Association of Canada-Mineralogical Association of Canada-Canadian Geophysical Union (AGU-GAC-MAC-CGU) Joint Assembly

Date: Sunday, May 3, 2015 — Thursday, May 7, 2015

Web: http://ja.agu.org/2015/

Includes the following sessions:

Canadian Cratons Through Time: 4.0 Ga of Chemical Evolution and Tectonism

Convenor: Aleksandar Miskovic (amiskovic@eos.ubc.ca)

Mafic-Ultramafic Magmatic Ore Deposits

Convenor: Bernard Charlier (b.charlier@ulg.ac.be)

Basaltic Magmatism in the Solar System: From Mantle to Magma in Space and Time

Convenor: Dejan Milidragovic (dejan.milidragovic604@gmail.com)

Chemical Scene Investigations of Large Igneous Provinces (CSI-LIPs)

Convenor: Richard Ernst (Richard.Ernst@ErnstGeosciences.com)

Surface Expressions of Volcanism and Associated Tectonism on Venus and Implications for Interior Dynamics

Convenor: Richard Ernst (Richard.Ernst@ErnstGeosciences.com)



2-nd Joannes Rasmussen Conference - Evolution of Basaltic Provinces

Date: Tuesday, May 5, 2015 — Wednesday, May 6, 2015

Location: Torshavn, Faroe Islands

Web: http://jrasmussen.jf.fo/index.html

Jarðfeingi is delighted to announce that the 2nd JRC conference we will be held in May 2015. The conference will be held in Tórshavn, surrounded by some of the youngest lava flows of the Faroe Islands Basalt Group, new observations and ideas shall be presented covering aspects of how basaltic provinces evolve during their lifetimes. During two days, oral presentations shall be given in a relaxed and informal atmosphere with ample opportunity for discussion. In addition, technical posters shall be on display throughout the conference. The two days will be separated into four sessions, each with an invited keynote speaker. The following topics have been suggested for presentations, but this is not a definitive list and we welcome other suggestions:

Geochemical evolution

Emplacement Processes

Timing of events

Origin of Large Igneous Provinces

Pre-conference fieldtrip: Geology of the Faroe Islands Basalt Group

Contact: Uni Arting (ua@jf.fo)



Drilling Volcanics - A Conference on Drilling in Volcanic Provinces

Date: Thursday, May 7, 2015 — Thursday, May 7, 2015

Location: Torshavn, Faroe Islands

Web: http://jrasmussen.jf.fo/index.html

During the last two decades we have seen an increasing number of wells being drilled through volcanic units. The aim of this conference is to create a forum for oil and service companies as well as others that have experience with drilling in basalt to present and discuss the challenges that occur when drilling a heterogenic volcanic basalt package. We are planning to invite speakers from oil- and service companies with experience in drilling volcanics basalts to tell us what they have learned.

Post-conference fieldtrip: Large scale geological variations in the Faroe Islands Basalt Group

Contact: Uni Arting (ua@jf.fo)



Geological Society of America (GSA) North-Central Section 49-th Annual Meeting

Date: Tuesday, May 19, 2015 — Wednesday, May 20, 2015

Location: Madison, Wisconsin, USA

Web: http://www.geosociety.org/Sections/nc/2015mtg/index.htm

Includes the following sessions:

T1. Precambrian Geology of the Great Lakes Region


Convenors: Samuel R. Castonguay (castonsr@uwec.edu), Esther K. Stewart (esther.stewart@uwex.edu)

From Archean greenstone belts to the Proterozoic Midcontinent Rift, the Great Lakes Region hosts an exceptional record of Precambrian earth history. This session seeks contributions that address the region’s Precambrian geology through approaches including stratigraphic, structural, paleontologic, geochronologic, geochemical, petrologic, isotopic, and field studies.



Geological Society of America (GSA) Rocky Mountain Section 67-th Annual Meeting

Date: Thursday, May 21, 2015 — Saturday, May 23, 2015

Location: Casper, Wyoming, USA

Web: http://www.geosociety.org/Sections/rm/2015mtg/index.htm

Includes the following symposia:

S1. Yellowstone/Teton/Snake River Plain Volcano-Tectonic System: Honoring 55 Years of Distinguished Research and the Legacy of Bob Smith


Convenor: Jamie Farrell (jamie.farrell@utah.edu)

Bob Smith’s career spanned an unprecedented change in our understanding of the Yellowstone Volcano-Tectonic System. Bob led and trained many students at University of Utah in a tenacious pursuit of ever changing technology to geophysically monitor and observe the Yellowstone system from surface features (fractures, faults, and fumaroles) to tomography of the mantle.

Includes the following fieldtrips:

4. Yellowstone and Northwest Wyoming Volcano-Tectonic Field Trip


24–26 May


Leaders: Kent Sundell (ksundell@caspercollege.edu), Jamie Farrell (jamie.farrell@utah.edu) Bob Smith (robert.b.smith@utah.edu)

US$500; includes transportation in coach bus with restroom, two nights lodging at double occupancy rate, all lunches and four beverages per day, road log of trip, and all National Park entrance fees. All breakfasts and dinners will be on your own. Min: 30; max: 50. DEPARTURE: Check in at 6:30 a.m., 24 May, at the Ramkota Hotel in the lobby, GSA field trip check-in desk. Trip departs promptly at 7 a.m. A spectacular trip, reviewing classic Laramide structures, stratigraphy, volcanology, geomorphology, and tectonics while passing through the Casper Arch, Wind River Basin, Owl Creek Uplift, Wind River Canyon, Bighorn Basin, Cody Arch, Absaroka Mountains/Basin, Absaroka Volcanics, Sunlight Basin, Heart Mountain Detachment, Yellowstone Volcanics, northern Teton Range, Fish Creek Basin, Washakie Range, Wind River Arch, Dubois Arch, and back across the Wind River Basin. While in Yellowstone we will visit thermal features (Mammoth, Norris, West Thumb), Grand Canyon of the Yellowstone, Yellowstone Lake, and Old Faithful while learning about the underlying magma, earthquakes, faults, and folds actively changing the entire Volcano-Tectonic System and its relationship to the Teton Range and Snake River Plain.



Institute on Lake Superior Geology (ILSG) Annual Meeting

Date: Thursday, May 21, 2015 — Saturday, May 23, 2015

Location: Dryden, Ontario, Canada

Web: http://lakesuperiorgeology.org/Dryden2015/index.html



7-th International Conference on Arctic Margins (ICAM)

Date: Tuesday, June 2, 2015 — Friday, June 5, 2015

Location: Trondheim, Norway

Web: http://www.ngu.no/en-gb/Aktuelt/I-fokus2/7th-International-Conference-on...

Includes the following general session topics:

Arctic Large Igneous Provinces and their geodynamic significance

Contacts: Questions or suggestions regarding ICAM VII can be addressed to secretary Tove Aune (Tove.Aune@ngu.no) or chairs Morten Smelror (Morten.Smelror@ngu.no) and Oleg V. Petrov (vsgdir@vsegei.ru)



International Union of Geodesy and Geophysics (IUGG) 26-th General Assembly

Date: Monday, June 22, 2015 — Thursday, July 2, 2015

Location: Prague, Czech Republic

Web: http://www.iugg2015prague.com/

Includes the following symposia:

VS03 LIPs: vents and volatiles

Convenor: Ingrid Ukstins Peate (ingrid-peate@uiowa.edu)

This symposium will focus on recent advances made in our understanding of delivery mechanisms and volatile impact of flood volcanic eruptions from Large Igneous Provinces (LIPs) – mafic, silicic and bimodal. Increases in our understanding of eruption product records, volatile load and dispersal, and identification of vent sites sourcing individual eruptions provides the opportunity to re-evaluate these parameters with the goal of quantifying the current state of knowledge and guiding future targets of study. We invite papers that address the following themes: 1. Studies of LIP eruptions and vent sites as a mechanism for quantifying eruption processes. 2. Quantification of volatile fluxes on the scale of individual eruptions to LIPs. 3. Climate impact of volatiles from individual eruptions to cumulative province emplacement – especially novel volatiles such as F, Cl, Br. 4.Integrated impact of eruption mechanisms on volatile dispersal and consequences.

VS28 Understanding VIPS (Volcanic and Igneous Plumbing Systems) through Multidisciplinary Research

Convenor: Steffi Burchardt (steffi.burchardt@geo.uu.se)

Volcanic and Igneous Plumbing Systems (VIPS), which are made up of e.g. magma chambers, sheet intrusions, and conduits, are characterized by complex physical and chemical interactions of magma(s) with the surrounding rocks that occur from atom- to crustal-scale, and span times from seconds to millions of years. Hence, multidisciplinary research is essential to grasp the complexity of VIPS. Diverse scientific approaches have been used to study VIPS that include: (1) volcano geodesy, seismology, and volcanic gases chemistry for studying active VIPS, (2) structural geology, igneous petrology, and geochemistry for studying fossil, eroded VIPS, and (3) laboratory, numerical, and petrological modelling studies to constrain the dynamics and evolution of VIPS. Although all these approaches focus on the same topics, they traditionally operate as independent entities, which frequently leads to contradictory views. This realisation implies that method-based approaches alone are insufficient to fully unravel the complex chemo-physical processes governing the dynamics of VIPS. Instead, a process-based approach, integrating the input from various disciplines is recommended in order to derive a comprehensive understanding of VIPS. The proposed symposium aims to provide a platform for investigations on all components of VIPS e.g. sills, dykes, laccoliths, magma chambers, volcanic conduits, and the interface between magma bodies and their host rocks. Integrating a variety of approaches, e.g. geodetic and geophysical monitoring, field studies, and modelling, the symposium will be an ideal start for a new VIPS commission of IAVCEI, which we will propose to IAVCEI shortly.



Goldschmidt 2015

Date: Sunday, August 16, 2015 — Friday, August 21, 2015

Location: Prague, Czech Republic

Web: http://goldschmidt.info/2015/index

Includes the following sessions:

16e: Silicic Magmas: Connecting Plutonic and Volcanic Systems

Convenors: Carol Frost (frost@uwyo.edu), Peter Bowden (pbowden74@gmail.com)

This session will investigate the processes by which silicic magma systems produce felsic intrusions and volcanic rocks. Contributions are welcomed on silicic rocks of varying geochemical composition emplaced in a variety of tectonic settings. Questions include whether eruptive products have intrusive equivalents, and the relationship of petrogenesis to tectonic setting of magmatism.

16h: Mantle-Derived Intraplate Magmas and their Xenoliths: Source-Forming Processes, Impact on Lithosphere Stability, and Other Geodynamic Implications

Convenors: Sebastian Tappe (Sebastian.Tappe@debeersgroup.com), Tyrone Rooney (rooneyt@msu.edu), Andrea Giuliani (andrea.giuliani@unimelb.edu.au)

Mantle melting processes that occur away from subduction zones and mid-oceanic ridges are an important though often overlooked process by which both oceanic and continental lithosphere can grow and stabilize, or even weaken. In contrast to other tectonic settings, the intraplate environment produces an enormous range of primitive magma types with diverse isotopic compositions. The compositional diversity is commonly explained by variable thickness and enrichment style/history of the affected lithospheric plates. However, whether the lithospheric mantle is actively involved in melt generation, and to what extent, remains a controversial subject. It also remains poorly understood whether some intraplate magmatic provinces are sourced from deep-rooted thermochemical plumes or simply derived from convecting upper mantle materials by decompression melting. Equally, differences in COH-volatile speciation, as a function of mantle oxidation state, may have profound effects on melting and phase relations in both peridotitic and eclogitic sources. We welcome contributions - based on observation, experimentation, and modeling - that investigate the generation and evolution of primitive magmas in intraplate settings. This can include studies on the processes and products associated with melt/fluid-facilitated overprinting of mantle lithosphere, such as metasomatism including megacryst- and diamond-formation. We also encourage discussion of plume-lithosphere interaction, as well as of the potential links between volatile mobility in Earth’s mantle and processes that lead to lithosphere destruction and continental break-up. We particularly invite research that exploits modern analytical tools at the micro-scale or smaller to address large-scale phenomena observed within intraplate magmatic provinces and their plumbing systems.

18c: Making Intermediate Magmas: From the Archean to the Present

Convenors: Kristoffer Szilas (szilas@stanford.edu), Peter Kelemen (peterk@ldeo.columbia.edu)

Intermediate magmatic rocks, particularly “calc-alkaline” andesites, dacites and plutonic rocks, closely resemble the composition of continental crust. They are complex and can form by many different processes including: fractional crystallization, magma mixing, mantle assimilation, crustal assimilation, and – for the crust - mechanical juxtaposition of mafic and felsic rocks. Although intermediate magmas can potentially form in any tectonic setting, they are usually found in subduction-related volcanic arcs. Indeed, calc-alkaline andesites and dacites are found almost exclusively in arcs, leading to the hypothesis that the formation of continental crust occurs in the subduction zone environment. In any case, the petrogenesis of intermediate magmatic rocks may help shed light on the details of the processes that led to the formation of the continents. We invite contributions to this session that concern intermediate magmas in the broadest sense, including presentation of field-based studies, geochemical analyses, thermodynamic modeling, or experimental work, that can lead to new insights on formation of intermediate magmas throughout Earth history.

22a: The Record and Influence of Impacts and Volcanism on the Early Earth

Convenors: Alexandra Davatzes (alix@temple.ed), Gary Byerly (gary@geol.lsu.edu), Fabrice Gaillard (fabrice.gaillard@cnrs-orleans.fr), Steven Goderis (Steven.goderis@vub.ac.be)

Surface conditions on the early Earth were influenced by external delivery of material through meteor impacts as well as emissions from the interior via volcanic activity. Both of these processes cause significant and sudden environmental disturbances to the atmosphere, hydrosphere, and to life. Recent work has begun to re-evaluate the impact flux to the early Earth: was there a Late Heavy Bombardment, a continual and rapid decline of impact rate in the Hadean, or a continual delivery of large bolides to the surface throughout the Precambrian? How have impacts throughout the Archean and Proterozoic created transient or permanent shifts in climate or biology? Was the Archean Earth continuously producing large igneous provinces or was subduction and the associated volcanic activities already operating? What is seen in the geological record that would allow us to better understand the evolution of the nature, style and impact of volcanism on early Earth? And finally how does the hydrothermal or surficial alteration of volcanic rocks produce biologically favorable or adverse conditions? We invite contributions using observations from the geological record, experimental data, and models that explore the rate(s) and effects of these events to the earliest history of our planet. This session also includes observations and models from the Moon, Mars, and asteroids/meteorites that inform our models for early Earth’s evolution.



Society of Economic Geologists-Australian Research Council Centre of Excellence in Ore Deposits (SEG-CODES) World-Class Ore Deposits: Discovery to Recovery

Date: Sunday, September 27, 2015 — Wednesday, September 30, 2015

Web: http://www.seg2015.org/

Includes the following theme:

3. Magmatic deposits: new examples; characteristics and mechanisms

Co-ordinator: Stephen Barnes (steve.barnes@csiro.au)



Geological Society of America (GSA) Annual Meeting

Date: Sunday, November 1, 2015 — Wednesday, November 4, 2015

Web: http://community.geosociety.org/gsa2015/home

Includes the following sessions:

T153. Mass Extinction Causality: Records of Anoxia, Acidification, and Global Warming during Earth's Greatest Crises

Convenors: David Bond (d.bond@hull.ac.uk), Paul Wignall (p.b.wignall@leeds.ac.uk), Mike Widdowson (mike.widdowson@open.ac.uk)

This session explores the paleontology, stratigraphy, and geochemistry of mass extinctions, high-resolution records of anoxia, ocean acidification, and global warming, and their mechanistic links to the ultimate drivers of change (e.g., large igneous province eruptions).

T213. Integrating Perspectives on the Formation, Evolution, and Destruction of Continental Crust: From 0 to 4600 Ma

Convenors: Paul Mueller (pamueller@ufl.edu), Robert Stern (rjstern@utdallas.edu), David Snyder (david.snyder@nrcan-rncan.gc.ca), Maria Magnani (mmagnani@memphis.edu), Marion Bickford (mebickfo@syr.edu)

Constraining the extent to which the geochemical, geophysical, and tectonic characteristics of modern arc systems (oceanic and continental) and LIPS (large igneous provinces) can be applied to the Precambrian record (Archean and Proterozoic) of crustal evolution.



American Geophysical Union (AGU) Fall Meeting

Date: Monday, December 14, 2015 — Friday, December 18, 2015

Web: http://fallmeeting.agu.org/2015/

Includes the following sessions:

T050: The Parana-Etendeka Igneous Province and Related Magmatism: What Have we Learned so far?

Convenors: Edgardo Canon-Tapia (ecanon@cicese.mx), Irene Raposo (irene@usp.br), Xixi Zhao (xzhao@tongji.edu.cn)

The Paraná-Etendeka Igneous Province (PEIP) of Brazil and Namibia is the second largest outcrop of the Cretaceous continental flood basalt; it is closely related to the opening of the South Atlantic Ocean, and was followed by many intrusions, some of which might lie outside the present day Paraná Basin. Numerous studies describing the geochemical, geochronological, geophysical, paleomagnetic, stratigraphical, tectonic and volcanic characteristics of the PEIP proper, and the associated magmatism on both sides of the Atlantic, have been published in the past decade. However, it is difficult to assess how much has been learned about this province, partly because those works are outpaced in the literature. This session therefore invites recent studies in all subjects that contribute for a better knowledge of the origin and evolution of the PEIP and related magmatism. We also encourage multidisciplinary studies allowing comparison of the PEIP with other continental flood basalt provinces.

V037: The Tempo of Continental Flood Basalt Eruptions

Convenors: Loyc Vanderkluysen (loyc@drexel.edu), Stephen Self (steve@stephenself.com), Paul Renne (prenne@bgc.org), Andrea Marzoli (andrea.marzoli@unipd.it)

Continental Flood Basalt (CFB) eruptions play an important role in mass and energy fluxes between the mantle, crust, and atmosphere, and at least the last four mass extinctions are associated closely in time with CFB "main-phase" eruptions. However, a better understanding of the timing and rate of CFB eruptions relative to paleontological and geochemical markers of major biospheric disturbances is necessary to further progress in understanding possible causal relations, as well as achieving a more fundamental geodynamical and petrological understanding of the genesis of these extraordinary volcanic events. This session provides a forum for presentation of new results or reviews from diverse fields including geochronology, volcanology, petrology, geochemistry, paleontology, and geophysical and atmospheric modeling that bear on this theme.

P031: The Physical Conditions controlling Life's Origin, Evolution, and End

Convenors: Daniel Knoll (dkoll@uchicago.edu), Jun Yang (junyang28@uchicago.edu), Nathaniel Baskin (nbaskin@uchicago.edu)

New insights into Mars’ wet past, the confirmation of a liquid ocean on Ganymede, and the ongoing stream of exoplanet discoveries raise the prospect of an ever-wider range of environments that could sustain life. This session explores how such environments emerge, are sustained, and eventually decline. Questions of particular interest include: What is Earth’s long-term climatic stability and how will it end? How long did habitable conditions persist on Mars and did they ever exist on Venus? What habitable environments exist in the outer Solar System and how do they continue to evolve? How do the Faint Young Sun Problem, the Runaway Greenhouse, and long-term climate feedbacks play out across different planets and outside the Solar System? We invite case studies and comparisons that use observations, experiments and/or modeling to expand our understanding of the habitability of diverse environments in our Solar System and beyond.

DI001: Across the Scales: Earth's Mantle Dynamics Through Space and Time

Convenors: Keely O'Farrell (k.ofarrell@ucl.ac.uk), Tobias Rolf (tobias.rolf@geo.uio.no), Shijie Zhong (shijie.zhong@colorado.edu), Anne Davaille (davaille@fast.u-psud.fr)

From small-scale convection underneath tectonic plates to huge thermochemical features such as the LLSVPs in the lower mantle, mantle dynamics is a multi-scale process! It includes everything from the cooling of the early magma ocean, to the formation of plumes, the assembly of supercontinents and the long-term secular cooling. Revealing how processes on these different temporal and spatial scales operate, interact, and produce surface observations in volcanism, tectonics, gravity anomalies and sea-level changes is thus of great importance for understanding Earth’s evolution and dynamics. This session aims to shed light on these processes, including (but not limited to) formation and dynamics of mantle structures, dynamics of plate tectonics and continental drift, and magma ocean dynamics. We welcome theoretical, numerical, laboratory and observational studies from a wide range of disciplines that contribute to understanding these multi-scale processes.

PP015: Evolution of the Earth System

Convenors: Colin Goldblatt (czg@uvic.ca), Benjamin Johnson (ben.w.johnson3@gmail.com)

Earth has evolved as a coupled system, with rich interactions between biology, geology, chemistry and climate. A wide array of geochemical and climatic states have existed through a continuously habitable period of at least 4 billion years. Understanding this evolution is necessarily an interdisciplinary problem. We welcome contributions which chart or explain this evolution, with either observational or theoretical approaches, for any period in Earth history. Topics will include evolution of major geochemical cycles (C, O, N), major climatic events and the co-evolution of life and the environment.

V046: Yellowstone volcanism from its current expression to early vestiges of hotspot activity via geophysical and petrologic studies

Convenors: Matthew Loewen (loewenm@uoregon.edu), Ilya Bindeman (bindeman@uoregon.edu), Eugene Humphreys (gene@newberry.uoregon.edu)

The Yellowstone-Snake River Plain magmatic province represents one of the largest worldwide centers of bimodal rhyolitic-basaltic volcanism. Although not universally accepted, recent geophysical imaging and geochemical tracers provide strong evidence that the volcanism is driven at depth by a mantle plume from ~17 Ma volcanism in SE Oregon- SW Idaho to present volcanic activity in Yellowstone National Park. Recently studies have also recognized potential earlier traces of the Yellowstone plume in 17+ Ma volcanic centers across Oregon to a 55+ Ma Pacific origin. Advances in geochemical microanalysis, geochronology, numerical modeling, and geophysical imaging are providing new clues to understanding the mantle origin of the hotspot, crustal structures and magma reservoirs, and mechanisms for rhyolite generation and eruption triggering. We seek interdisciplinary contributions from petrologic and geophysical studies or modeling that are working to progress our understanding of current or past state of the Yellowstone hotspot and its volcanoes.

T038: Rifts and Passive Margins: Tectonics, Dynamics, Processes

Convenors: Sascha Brune (sascha.brune@sydney.edu.au), Peter Clift (pclift@lsu.edu), Gwenn Peron-Pinvidic (gwenn@ngu.no), Giacomo Corti (giacomo.corti@igg.cnr.it)

This session presents recent advances on rifts and passive margins from geological and geophysical studies that are based on seismic interpretation, field geological data, plate reconstructions, sedimentology, and modeling. We aim to assemble presentations on basin, regional and global scale that provide new insight on rift evolution in terms of inheritance and strain localization, fault interaction and stratigraphy, partial melting and volcanism, surface stress evolution, tectonics-climate interaction, small-scale convection, driving forces, and rift-to-drift transition. Most rifts feature significant along-strike structural variations. We therefore particularly encourage abstract submission on 2D investigations with regional perspective, 3D seismic arrays, as well as 3D analogue and numerical experiments. Special emphasis will be put on contributions that develop an integrated picture by bridging multiple spatial or temporal scales or by combining results from active rifts, failed rift arms, passive margins or obducted rifted margins.

DI009: Mantle Plumes From Head to Toe

Convenors: Eric Mittelstaedt (emittelstaedt@uidaho.edu), Dominique Weis (dweis@eos.ubc.ca), Peter Van Keken (keken@umich.edu)

Rising mantle plumes carry mass, heat, and chemical anomalies from their ‘toes’ at the base of the mantle to their ‘heads’ near the surface, where plumes spread beneath the lithosphere.  Recent investigations reveal growing evidence for complex plume dynamics near the Core-Mantle Boundary (CMB) and interactions with tectonic plates.  Near the CMB, slow shear velocities suggest the existence of large piles of chemically anomalous material that change plume structure and control plume initiation.  This material may be incorporated into plume stems, altering the composition of hotspot lavas.  Near the surface, spreading plume heads are the source of chemically anomalous hotspot lavas, dynamic topography, and changes to lithospheric deformation and rifting.  This session aims to take a broad view of mantle plumes, looking at advances in understanding of their formation, rise, lithosphere interaction, and eventual effect on surface processes.  We welcome recent work on plumes at all scales and depths.

T022: Geologic and geodynamic evolution of the Arctic region

Convenor: Eric Gottlieb (esgeo@standford.edu), Richard Lease (rlease@usgs.gov), Richard Saltus (saltus@usgs.gov), Tim O'Brien (timothy3@stanford.edu)

Over the last quarter century, scientific and entrepreneurial agendas for the Arctic have expanded greatly as climate change, international politics and technological innovations have diminished logistical barriers and opened a modern frontier for scientific and resource exploration. Despite years of study, much of the framework geologic history of the Arctic Ocean and its surrounding landmasses is insufficiently constrained by existing data and is thus controversial.  Elucidating the multiphase plate tectonic history of the oceanic and surrounding continental realms through robust plate reconstructions and regional tectonic syntheses is a fundamental challenge. We seek research that addresses the challenging geology of the Arctic, especially submissions that integrate understanding of (1) age, lithology, structure, and/or paleo-(bio)geography of circum-Arctic lithosphere, (2) tectonic and geodynamic processes of lithosphere generation and modification, and (3) geologic and geophysical correlations across the oceanic realm and into better-studied regions of Eurasia, Laurentia and elsewhere.

V020: Interdisciplinary perspectives on continental crust evolution

Convenors: Bruno Dhuime (b.dhuime@bristol.ac.uk), Esteban Gazel (egazel@vt.edu), Claire Bucholz (cbucholz@mit.edu), Jeroen Van Hunen (jeroen.van-hunen@durham.ac.uk)

There are still many outstanding questions regarding the modus operandi of continental crust formation and destruction, its volume, composition, thickness, and its interaction with the mantle and the atmosphere through time; especially during the early stages of Earth's evolution. New perspectives are rising from the increased understanding of the geochemical record preserved in igneous and sedimentary rocks, minerals and their inclusions, the improvement of analytical techniques, and the development of both analogue and numerical modeling of crust-mantle interaction through time. This session welcomes contributions that address the origin and evolution of the crust and/or the lithosphere, using one or a combination of these different approaches. Contributions that present new approaches and/or new (interdisciplinary) analytical techniques will be particularly welcome.

T020: Formation and evolution of the North American continental lithosphere

Convenors: Amy Gilligan (a.gilligan@imperial.ac.uk), Fiona Darbyshire (darbyshire.fiona_ann@uqam.ca), Ian Bastow (i.bastow@imperial.ac.uk)

The North American continent records more than 3 billion years of the Earth’s tectonic history in its present day lithospheric structure. Geophysical data coverage of North America has vastly improved in recent years, thanks to ongoing large-scale projects such as EarthScope and POLARIS. This wealth of new geophysical data is permitting detailed studies of Earth structure in previously under-represented parts of the continent. New results emerging from studies using these data suggest that the “stable” continental core in the central and eastern regions is as structurally and dynamically complex as the tectonically-active west. We welcome submissions related to structural, tectonic and geodynamic studies of the formation and evolution of North America, with particular emphasis on geophysical investigations of the upper mantle.



Volcanic and Magmatic Studies Group (VMSG) Annual Meeting

Date: Wednesday, January 6, 2016 — Friday, January 8, 2016

Location: Dublin, Ireland

Web: http://www.tcd.ie/Geology/vmsg2016/index.php

Includes the following session:

LIPs, rifting and element cycling in the mantle

Chairs: Mike Widdowson (m.widdowson@hull.ac.uk), Sally Gibson (sally@esc.cam.ac.uk), Emma Tomlinson (tomlinse@tcd.ie)

This session will investigate the genesis of the wide variety of primitive magmas that are found in intraplate settings, LIPs, rifts and ocean basins. In addition to petrological studies and emplacement histories, we also invite contributions that attempt to decipher the chemistry and isotope composition and heterogeneity of the mantle and their information on long-term element cycling in the silicate Earth.  



Geological Society of America (GSA) South-Central Section 50-th Annual Meeting

Date: Monday, March 21, 2016 — Wednesday, March 23, 2016

Location: Baton Rouge, Louisiana, USA

Web: http://www.geosociety.org/Sections/sc/2016mtg/index.htm

Includes the following workshop:

W2. Geologic studies of the 3.5-3.2 Ga Barberton Greenstone Belt, South Africa

Leader: Gary Byerly (glbyer@lsu.edu)

This course will use rock samples, thin sections, field photos, and geologic maps to provide context for the evolution of this important sequence from the early Archean. Komatiites will be examined in detail, because they are only rarely found in younger rock sequences. Rock and mineral chemistry, including REE and PGE, will be examined. Dacites form the other end-member of the volcanic series, and again rock and mineral chemistry, will be examined along with U/Pb and Lu/Hf isotopic data used to determine the ages of these old rocks. This sequence includes eight layers that result from large asteroidal impacts, and we will examine some of the materials from these layers. A broad spectrum of sedimentary rocks will conclude the workshop, including well preserved sandstones, volcaniclastics, barites, banded iron formation, stromatolites, and carbonaceous cherts with microfossils.



Geological Society of America (GSA) Northeastern Section 51-st Annual Meeting

Date: Monday, March 21, 2016 — Wednesday, March 23, 2016

Location: Albany, New York, USA

Web: http://www.geosociety.org/Sections/ne/2016mtg/index.htm

Includes the following symposium:

S1. Applications of geochemistry and geochronology to understanding tectonic processes: in honor of Raymond A Coish

Convenors: David West (dwest@middlebury.edu), Peter Ryan (pryan@middlebury.edu), Jonathan Kim (jon.kim@state.vt.us)

This session honors the career of Ray Coish and welcomes contributions focused on understanding tectonics through the lens of geochemistry and geochronology. Submissions might include the use of igneous and metamorphic rock geochemistry, igneous and metamorphic mineral chemistry, and geochronology as applied toward understanding tectonic processes and unraveling tectonic histories.



Geological Society of America (GSA) Cordilleran Section 112-th Annual Meeting

Date: Monday, April 4, 2016 — Wednesday, April 6, 2016

Location: Ontario, California, USA

Web: http://www.geosociety.org/Sections/cord/2016mtg/index.htm

Includes the following session:

T6. Integrated volcanic systems: coupling and feedbacks between volcanic, sedimentary, geomorphic, climatic, and environmental processes

Convenors: Benjamin Murphy (murphybe@onid.oregonstate.edu), Nicole More (mooreni@geo.oregonstate.edu)

Volcanism profoundly impacts surficial non-magmatic processes. As these are intricately coupled with volcanic activity, analysis of the sedimentary, geomorphic, environmental, and volcanic features of ancient and modern magmatic systems is crucial in fully understanding volcanism. We invite abstracts that examine the relationships between these diverse yet integrally linked processes.



European Geosciences Union (EGU) General Assembly

Date: Sunday, April 17, 2016 — Friday, April 22, 2016

Location: Vienna, Austria

Web: http://www.egu2016.eu/

Includes the following session:

SSP2.9/GMPV1.7 Mass extinctions, volcanism, impacts, and catastrophic environmental changes: observations and processes

Convenors: Sverre Planke (planke@vbpr.no), Thierry Adatte (thierry.adatte@unil.ch), Eric Font (font_eric@hotmail.com), Andrea Marzoli (andrea.marzoli@unipd.it)

This session will investigate how massive volcanism and meteorite impacts may have caused mass extinctions and global environmental crises. We hope to bring together researchers across the geological, geophysical, and biological disciplines to present new and exciting research. The session will focus on the four main Mesozoic and Cenozoic crises (end-Permian, end-Triassic, end-Cretaceous, and the Paleocene-Eocene Thermal Maximum (PETM)), but contributions from theoretical studies or from other environmental crises are also welcome.



Geological Society of America (GSA) North-Central Section 50-th Annual Meeting

Date: Monday, April 18, 2016 — Tuesday, January 19, 2016

Location: Champaign, Illinois, USA

Web: http://www.geosociety.org/Sections/nc/2016mtg/index.htm

Includes the following session:

T31. Magmatic processes of the Midwestern Proterozoic: Mid-Continent Rift to St. Francois Mountains

Convenor: Craig Lundstrom (lundstro@uiuc.edu)

While out stable platform location now leads to little igneous activity, the Proterozoic provided a great deal of magmatism, which emplaced large amounts of basaltic to rhyolitic magmas. This session solicits contributions related to igneous petrology of the Midcontinent Rift and Granite-Rhyolite Province. Observations, experiments, and numerical models of petrogenesis are welcomed.



Institute on Lake Superior Geology (ILSG) Annual Meeting

Date: Thursday, May 5, 2016 — Friday, May 6, 2016

Location: Duluth, Minnesota, USA

Web: http://lakesuperiorgeology.org/Duluth2016/index.html



Geological Society of America (GSA) Rocky Mountain Section 68-th Annual Meeting

Date: Wednesday, May 18, 2016 — Thursday, May 19, 2016

Location: Moscow, Idaho, USA

Web: http://www.geosociety.org/Sections/rm/2016mtg/index.htm

Includes the following sessions:

12. Geologic setting and hydrogeology of the Columbia River Basalt Group and the Snake River Plain

Convenors: Attila Folnagy (afolnagy@mt.gov), Tom Wood (twood@uidaho.edu)

Includes the following fieldtrips:

The Columbia River Basalt Group of Western Idaho and Eastern Washington - Dikes, Vents, Flows, and Tectonics along the Eastern Margin of the Flood Basalt Province

Date: 16-17 May

Leaders: Stephen Reidel (sreidel@tricity.wsu.edu), Victor Camp (vcamp@mail.sdsu.edu), Barton Martin (bsmartin@owu.edu), Terry Tolan (ttolan@intera.com), John Wolff (jawolff@wsu.edu)

The Columbia River flood basalt province is the youngest and smallest 'Large Igneous Province' yet it is one of the most studied and best understood. Participants will have an opportunity to examine features along the eastern margin of the province that provide excellent examples of typical lava flows, dikes and vents, and tectonic features.

Geology of the Wallowa Terrane in the Northern Parts of Hell Canyon

Date: 17 May

Leaders: Tracy Vallier (tvallier@usgs.gov), Keegan Schmidt (klschmidt@lcsc.edu), Todd LaMaskin (lamaskint@uncw.edu)

Much of the Paleozoic-Mesozoic exotic island arc complex represented by the Wallowa terrane is covered by extensive Cenozoic volcanics and sediments in the Blue Mountains and Columbia Plateau of Idaho, Washington, and Oregon. Locations in which these basement rocks are visible are limited, and one of the most impressive continuous exposures occurs in the walls of Hells Canyon. This trip will explore the anatomy of the Wallowa island arc by jet boat including its plutonic basement, extensive volcanic sequences, and capping sedimentary rocks, along with faults and Columbia River basalt exposures within, “North America’s deepest gorge.”

Miocene to Pleistocene Volcanism of the Yellowknife Hotspot: Western and Central Snake River Plain

Date: 20-23 May

Leaders: Scott Boroughs (scott.boroughs@wsu.edu), Bill Bonnichsen, Martha Godchaux, John Wolff (jawolff@wsu.edu)

The Snake River Plain is a classic province of bimodal intraplate volcanism, along the track of the Yellowstone hotspot, that has been intensely studied in recent years. This trip will examine trademark high-temperature rhyolites, both densely welded lava-like ignimbrites and large-volume lava flows, associated basaltic lavas and tuffs, and features arising from the interaction of basalt and rhyolite lavas with Miocene–Pliocene Lake Idaho.



Japan Geoscience Union Meeting

Date: Sunday, May 22, 2016 — Thursday, May 26, 2016

Location: Makuhari Messe, Japan

Web: http://www.jpgu.org/meeting_e2016/index.htm

Includes the following session:

S-IT10 Do plumes exist?

Convenors: Hidehisa Mashima (hisa.mashima@mbn.nifty.edu), Gillian Foulger (g.r.foulger@durham.ac.uk), Dapeng Zhao (zhao@aob.gp.tohoku.ac.jp)

The debate regarding whether anomalous volcanic areas on Earth's surface are fed by deep-mantle plumes is widely considered to be the most significant debate currently ongoing in Earth science. Not only does the debate touch on a fundamental aspect of how Earth works dynamically, but the subject is extraordinarily cross-disciplinary to an extent that probably few scientists fully realize. Sub-disciplines that can contribute to efforts to resolve the debate include sedimentology, palaeontology, tectonophysics, geochronology, volcanology, petrology, geochemistry, geothermal research, seismology, geodesy, electromagnetics and many others.
In addition to the disciplines of Earth science, the plume debate provides a remarkable and thought-provoking subject for scientific philosophy and reflections on correct scientific methodology: (1) What exactly is a plume? People often change their definition of a plume a posteriori in order to fit their observations. (2) How can the plume- or the plate hypothesis be falsified? (3) Do Earth scientists tend to present only one possible interpretation of their data, or do papers reflect all possible interpretations? Unfortunately, the former is often the case. (4) Are published interpretations consistent with other data from the subject field area? Often they are not, and the inconsistencies are not sufficiently highlighted nor discussed. These issues are particularly useful for inducting students into correct scientific working. In summary, the debate provides enormously fertile ground for new, fundamental questions and cross-disciplinary research.
This session welcomes studies of melting anomalies on Earth from the point of view of any sub-discipline. We also welcomes studies of geological phenomena which are attributed to mantle plumes, such as back-arc extension, plate motion, sedimentary basin formation and lithospheric uplift, and any other work that bears on this fascinating and challenging geological debate.



Geological Association of Canada-Mineralogical Association of Canada (GAC-MAC) Annual Meeting - Margins Through Time

Date: Wednesday, June 1, 2016 — Friday, June 3, 2016

Location: Whitehorse, Yukon, Canada

Web: http://whitehorse2016.ca/

Includes the following session:

Northwest Laurentia's neighbor in Proterozoic supercontinents: cratonic identifications and their geodynamic implications

Convenors: Bruce Eglington (bruce.eglington@usask.ca), David Evans (david.evans@yale.edu), Zheng-Xiang Li (z.li@exchange.curtin.edu.au)

Recent paleogeographic models for both Nuna (ca. 1600-1300 Ma) and Rodinia (ca. 900-700 Ma) invoke ancient tectonic connections between NW Laurentia and eastern Australia, possibly with various cratons of eastern Asia (South China, North China, Tarim, Siberia) in between or nearby.  The tectonostratigraphic and paleomagnetic records of all of these continental blocks must be scrutinized to test whether any of the proposed models has validity, for either time interval. If they are even approximately correct, then a general geodynamic pattern of supercontinental “introversion” is suggested.  As part of International Geoscience Programme (IGCP) Project 648, “Supercontinent Cycles and Global Geodynamics,” this session aims to bring both geologists and geophysicists together to discuss recent advances in Proterozoic supercontinent research, at both regional and global scales.



Goldschmidt 2016

Date: Sunday, June 26, 2016 — Friday, July 1, 2016

Location: Yokohama, Japan

Web: http://goldschmidt.info/2016/index

Includes the following sessions:

05d Large Igneous Provinces Through Time: Their Origin and Economic/Environmental Impacts

Convenors: Yigang Xu (yigang.xu@gig.ac.cn), Ian Campbell (ian.campbell@anu.edu.au), Richard Ernst (richard.ernst@ernstgeosciences.com), Christina Yan Wang (wangyan2002@graduate.hku.hk)

Large igneous provinces (LIPs) consist of enormous, rapid outpourings of magmas at the surface, and/or layered mafic and ultramafic intrusions within the crust that may host important mineral deposits. LIPs involve the transfer of large amounts of heat and mass from Earth’s interior to its surface, and this can have a profound impact of Earth evolution. LIP processes include the release variable amounts of greenhouse gases and/or toxic volatiles into the atmosphere that may cause harmful damage to the biosphere, which can lead to mass extinctions. Significant progress has been made with respect to our understanding of LIP genesis and evolution, but important questions remain. This session welcomes multidisciplinary contributions to our understanding of the nature and evolution of LIPs through time including, but not limited to, magmatic processes, the origin of associated mineral deposits, volatile speciation and emission budgets, and the environmental impact of LIPs, including mass extinctions. The aim of the session is to provide better insights into mantle-lithosphere-atmosphere-biosphere interactions.

09b Links between Large Igneous Province Events and Metallogeny

Convenors: Simon Jowitt (simon.jowitt@monash.edu), Richard Ernst (richard.ernst@ernstgeosciences.com)

Large Igneous Provinces (LIPs) have been genetically linked with a wide variety of differing types of mineralisation, including the genesis of magmatic, hydrothermal and sedimentary deposits. In many cases carbonatites and kimberlites and their associated ore deposits are also associated with LIPs. World-class mineralised provinces related to LIPs, include the Noril'sk-Talnakh deposits associated with the Siberian Trap LIP, the Olympic Dam IOCG deposit with the Gawler Craton LIP, and the Guinea bauxite deposits with weathering of rocks of the CAMP LIP. Increasing our understanding of the fundamental links between LIP magmatism and the post-magmatic processes that affect LIP rocks is vital to not only ensure success in future mineral exploration but also to understand the impact of these processes on the wider environment (e.g. the impact of potentially mineralised LIP-related hydrothermal vent complexes on the atmosphere), especially given the known links between LIPs and extinction events. The links between LIP events and metallogeny represent significant but under-investigated geochemical systems that are deserving of further research. As such, we invite submissions from researchers working on any aspect of LIP-related metallogenesis, including orthomagmatic systems, hydrothermal systems, ore deposits associated with carbonatites and kimberites, and the weathering of LIP rocks, as well as from the wider LIP community. The aim of this session is to further our knowledge of geochemical cycling associated with LIP events, and how this geochemical cycling has changed throughout the geological record.

04g Do Basalts Accurately Sample Mantle Source Rocks? The Role of Lithologic Heterogeneity in the Sub-Oceanic Upper Mantle during Melt Generation at Ridges and Hot Spots

Convenors: Lynne Elkins (lelkins@brynmawr.edu), John Lassiter (lassiter1@jsg.utexas.edu)

Mid-ocean ridge and ocean island basalts display considerable geochemical heterogeneity. However, the degree to which variations in the isotopic and trace-element compositions of mantle-derived basalts track changes in the major element compositions and lithology of mantle source rocks is uncertain. Recent studies have called on a role for preferential melting of pyroxenite in mixed pyroxenite/peridotite mantle sources to explain geochemical variations in oceanic basalts. Isotope signatures in abyssal peridotites may further suggest the presence of ancient refractory components that are under-sampled during melt generation. However, the importance and length scales of mantle major element heterogeneities remains unclear. This session aims to explore the role of lithologic heterogeneity in the mantle during melt generation, the extent to which the melting process may generate a biased sampling of mantle sources, and the impact of such bias on estimates of mantle composition. We invite submissions that explore the nature of melt production at ridges, hotspots, and ridge-hotspot interaction settings and how those processes impact differential sampling of mantle heterogeneities over a range of length scales. Studies examining the origins of petrologic and geochemical variations in mantle xenoliths and abyssal mantle rocks, the nature of elemental and isotopic compositions of oceanic basalts, results of empirical analysis, or geochemical modeling outcomes are all welcome.



7-th International Dyke Conference

Date: Thursday, August 18, 2016 — Saturday, August 20, 2016

Location: Beijing, China

Web: http://idc7.csp.escience.cn/dct/page/1

Conference committee contact: Richard Ernst (richard.ernst@ernstgeosciences.com), Peng Peng(pengpengwj@mail.iggcas.ac.cn)

Likely topics:

  1. Regional maps of dyke swarms and related magmatic units
  2. Dykes as plumbing system for Large Igneous Province
  3. Giant dyke swarm and supercontinents
  4. Geophysics of dykes with special reference to paleomagnetism, new aeromagnetic maps and remote sensing studies
  5. Petrology, geochemistry and petrogenesis of dykes
  6. Emplacement mechanism of dykes
  7. Geochronology of dykes
  8. Synplutonic mafic dykes
  9. Alkaline dykes, including kimberlites, lamproites, lamprophyres and carbonatites
  10. Dyke swarms and planetary bodies
  11. Links to mineralization
  12. Miscellaneous: Any other research related to dykes
  13. Dyke swarms and related igneous events in China


35-th International Geological Congress

Date: Saturday, August 27, 2016 — Sunday, September 4, 2016

Location: Cape Town, South Africa

Web: http://www.35igc.org/Themes

Includes the following themes:

Mineral Deposits and Ore Forming Processes

Champions: Anthony Williams-Jones (anthony.williams-jones@mcgill.ca), Yasushi Watanabe y-watanabe@gipc.akita-u.ac.jp), Michael Meyer (m.meyer@rwth-aachen.de), Jamie Wilkinson (j.wilkinson@nhm.ac.uk), Nick Arndt (nicholas.arndt@ujf-grenoble.fr)

The concentration of metals in the Earth’s crust is a complex and diverse process. The recognition of such processes and their distribution in space and time is fundamental to sustainable global resource management. This theme presents an opportunity to provide updates on the understanding of ore genesis and its importance to the search for new mineral resources.

The Hadean and Archaean Earth

Champions: Axel Hofmann (ahofmann@uj.ac.za), Alfred Kroner (kroener@uni-mainz.de), Christoph Heubeck (christoph.heubeck@uni-jena.de), Martin Van Kranendonk (martin.vankranendonk@unsw.edu.au)

For the first half of its existence the Earth was a very different planet - the Hadean and Archaean Eons were typified by geological and atmospheric processes quite different to those prevailing today. This theme will cover all aspects of the Earth's geological evolution up to 2.5 Ga.

The Proterozoic Earth

Champions: Nic Beukes (nbeukes@uj.ac.za), Paul Hoffman (paulfhoffman@gmail.com)

The Proterozoic Eon was initiated and terminated by catastrophic global events and spans 2 000 million years, about which very little is known. Any presentation that contributes to the understanding of geological evolution during this vast time span is invited for this theme.

Magmatism - Settings, Compositions and Processes

Champion: Julian Pearce (pearceja@cf.ac.uk)

The formation and intrusion of magma is a fundamental and ongoing process in the lithosphere.  Papers and symposia on the processes of magma formation, the controls on magma compositions, the geological settings of magmatic activity, and the processes by which magmas evolve on cooling are invited for this theme.



Geological Society of America (GSA) Annual Meeting

Date: Sunday, September 25, 2016 — Wednesday, September 28, 2016

Web: http://community.geosociety.org/gsa2016/home

Includes the following sessions:

T65. Precambrian evolution and mineral resources of the Midcontinent Rift region: in honor of William J. Hinze

 Convenors: Benjamin Drenth (bdrenth@usgs.gov), Joyashish Thakurta (joyashish.thakurta@wmich.edu), William Cannon (wcannon@usgs.gov)

T145. Volcanism, mass extinctions, and environmental change

 Convenors: Thierry Adatte (thierry.adatte@unil.ch), Stephen Grasby (steve.grasby@canada.ca), Gerta Keller (gkeller@princeton.edu), Blair Schoene (bschoene@princeton.edu), David Bond (d.bond@hull.ac.uk)

T166. Large Igneous Provinces (LIPs) in the solar system

 Convenors: Tracy Gregg (tgregg@buffalo.edu), Richard Ernst (richard.ernst@ernstgeosciences.com)



American Geophysical Union (AGU) Fall Meeting

Date: Monday, December 12, 2016 — Friday, December 16, 2016

Web: https://fallmeeting.agu.org/2016/

Includes the following sessions:

V018. Mass extinction events: from above or below

Convenors: Michael Rampino (mrr1@nyu.edu), Ken Caldeira (kcaldeira@standford.edu)

Two kinds of catastrophic events—large-body impact and flood-basalt volcanism—have been suggested as the cause of mass extinctions. It has also been proposed that these events show periodic patterns. Flood basalt eruptions have been further linked to Oceanic Anoxic Events, as a proximate cause of the extinctions. In this session, we will explore these potential connections. The subject of the session is very topical, as mass extinctions, flood basalts and impacts are all “hot button” issues. Correlation among them would suggest that extreme physical changes in the environment are required to produce extinctions. We would pursue abstracts that address the nature of these correlations and patterns, as well as studies on the environmental effects of impacts and flood basalts.

V024. Quaternary and Neogene hotspot volcanism on the Cretaceous Kerguelen Plateau, Southern Indian Ocean: nature and potential environmental impact

Convenors: Millard Coffin (mike.coffin@utas.edu.au), Robert Duncan (rduncan@coas.oregonstate.edu)

The Kerguelen Plateau, a large igneous province (LIP) of predominantly Cretaceous age in the southern Indian Ocean, has experienced widespread Quaternary and Neogene hotspot volcanism. Loci of this younger magmatism include not only the Kerguelen Isles, Heard Island, the McDonald Islands, and the seafloor surrounding these islands, but also broad areas elsewhere on the Central Kerguelen Plateau. Recent data and samples acquired from the seafloor, islands, and water column are illuminating the origin, age, and distribution of the Quaternary and Neogene hotspot volcanism as well as its role in supplying iron to the anemic Southern Ocean. Phytoplankton, which produce approximately half of the oxygen in the Earth’s atmosphere, require iron to metabolize and bloom. This multidisciplinary session aims to foster better understanding of young hotspot volcanism in the Southern Ocean and its potential role in supplying iron to surface waters where it nourishes phytoplankton.

V028. The ins and outs of flood basalts

Convenors: Wendy Bohrson (bohrson@geology.cwu.edu), Anita Grunder (grundera@geo.oregonstate.edu)

Flood Basalts are catastrophic, voluminous magmatic events that punctuate Earth History. We invite papers that address a range of questions that contribute to an integrated view of flood basalt magmatism from eruption dynamics to mantle source characteristics. What volcanic processes distinguish flood basalts? How do the erupted products change with time, and what is the character of the feeder systems? What is the duration of magmatism? What is the role of crustal modulation, including the location and size of magma reservoirs? What is the balance between crustal (e.g., assimilation, crystal accumulation) and mantle input, and does this balance change with time? What mantle sources are involved, and what distinguishing characteristics allow these source contributions to be resolved? Studies that document the petrological, geochemical, geochronological, volcanological and geophysical attributes of flood basalts and associated crust and mantle are encouraged, to ultimately assemble a temporal and spatial synthesis of these extraordinary events.



Geological Society of America (GSA) South-Central Section 51-st Annual Meeting

Date: Monday, March 13, 2017 — Tuesday, March 14, 2017

Location: San Antonio, Texas, USA

Web: https://www.geosociety.org/sc-mtg

Includes the following session:

T1. Advances in understanding Precambrian to Cenozoic magmatic and metamorphic processes and their bearing on lithospheric evolution of Southern Laurentia

Convenors: Elizabeth Catlos (ejcatlos@gmail.com), Michael DeAngelis (mtdeangelis@ualr.edu), Richard Hansen (r.hanson@tcu.edu)

The south-central U.S. is host to numerous exposures of igneous and metamorphic rocks that provide insight into lithospheric development and continental assembly. This broad session provides a forum for discussion of igneous and metamorphic petrology topics, including the connections between petrogenesis, geochemistry, and tectonics in the south-central region.



Geological Society of America (GSA) Northeastern (52-nd)/North-Central (51-st) Joint Section Meeting

Date: Sunday, March 19, 2017 — Tuesday, March 21, 2017

Location: Pittsburgh, Pennsylvania, USA

Web: https://www.geosociety.org/ne-mtg

Includes the following session:

27. Precambrian assembly of a continent from the northeast to the mid-continent to the southwest: modern approaches to study ancient crust

Convenors: Benjamin Hallett (hallettb@uwosh.edu), Christopher Daniel (cdaniel@bucknell.edu)

Observations from Precambrian rocks across North America emphasize the roles of tectonism and magmatism in the evolution of continental crust. We invite studies that utilize geochemical, geophysical, structural, petrologic, and geochronologic tools to examine Precambrian crustal evolution and craton assembly. Student presentations are welcomed.



European Geosciences Union (EGU) General Assembly

Date: Sunday, April 23, 2017 — Friday, April 28, 2017

Location: Vienna, Austria

Web: http://www.egu2017.eu/

Includes the following session:

SSP2.4/GMPV1.5 Mass extinctions, volcanism, impacts, and catastrophic environmental changes: observations and processes

Convenors: Sverre Planke (planke@vbpr.no), Thierry Adatte (thierry.adatte@unil.ch), Eric Font (font_eric@hotmail.com), Morgan Jones (m.t.jones@geo.uio.no), David Bond (d.bond@hull.ac.uk), Yadong Sun (sydlion@hotmail.com), Stephen Grasby (steve.grasby@canada.ca)

This session will investigate how massive volcanism and meteorite impacts may have caused mass extinctions and global environmental crises. We hope to bring together researchers across the geological, geophysical, and biological disciplines to present new and exciting research. The session will focus on the six main Phanerozoic mass extinctions (end Ordovician, end Devonian, end-Permian, end-Triassic, end-Cretaceous), but contributions from theoretical studies or from other environmental crises (e.g. PETM) are also welcome.



Institute on Lake Superior Geology (ILSG) Annual Meeting

Date: Wednesday, May 10, 2017 — Thursday, May 11, 2017

Location: Wawa, Ontario, Canada

Web: http://www.lakesuperiorgeology.org/



Geological Association of Canada-Mineralogical Association of Canada (GAC-MAC) Joint Annual Meeting

Date: Sunday, May 14, 2017 — Thursday, May 18, 2017

Location: Kingston, Ontario, Canada

Web: http://www.kingstongacmac.ca/en/

Includes the following sessions:

GS1: Magmatic and metallogenic processes associated with large igneous provinces

Convenors: Marie-Claude Williamson (marie-claude.williamson@canada.ca), Christopher Lawley (christopher.lawley@canada.ca), Danielle Giovenazzo (dgio@sympatico.ca), Richard Ernst (richard.ernst@ernstgeosciences.com), Sverre Planke (planke@vbpr.no), Steven Bergman (steven.bergman@shell.com)

Large Igneous Provinces (LIPs) are characterized by the catastrophic emplacement of large volumes of mafic magma in the continental and oceanic domains. LIPs include continental flood basalts and associated feeder sills and dykes; volcanic rifted margins; oceanic plateaus and ocean basin flood basalts; submarine ridges; ocean islands; and seamount chains. We invite contributions that link magmatic processes to ore deposit genesis in LIPs, and that inform our understanding of tectonostratigraphic, structural, and geochemical controls on these processes. We also welcome contributions on the environmental impact of continental flood basalt magmatism through time. This session is sponsored by the Geological Association of Canada’s Volcanology and Igneous Petrology (VIP) Division and the International Association of Volcanology and Chemistry of the Earth’s Interior (IAVCEI).

T3: Archean cratons and their rifted margins: stratigraphic systems, tectonics, secular evolution and metallogeny

Convenors: Wouter Bleeker (wouter.bleeker@canada.ca), Mike Hamilton (mahamilton@es.utoronto.ca)

The Archean cratons of North America formed as part of larger late Archean continental landmasses (supercratons). Rifting and eventual breakup of these ancestral supercratons isolated the Archean cratons (cratons sensu stricto such as the Superior, Wyoming, Hearne or Slave), a subset of which later reassembled into supercontinent Nuna during the latter part of the Paleoproterozoic­ era—an evolution that represents a full Wilson Cycle. This session will focus on this entire early Wilson Cycle, across a time span (ca. 2.50-1.75 Ga) that saw dramatic secular evolution of the planet. Special emphasis is on the stratigraphic and magmatic systems of the rifted margins of cratons such as the Superior, the various tectonic processes (from early extension and rifting, to breakup and dispersal, to final collision), and the full range of associated mineral systems. In particular, we seek contributions presenting new data on the various margins of the Superior craton (i.e. “Circum-Superior” belts sensu lato), but contributions on the evolution of other well-studied Archean craton margins and on global syntheses are equally encouraged. This session is sponsored by the Precambrian division of the Geological Association of Canada and the Canadian Tectonics Group.



Japan Geosciences Union-American Geophysical Union (JpGU-AGU) Joint Meeting

Date: Saturday, May 20, 2017 — Thursday, May 25, 2017

Location: Chiba, Japan

Web: http://www.jpgu.org/meeting_e2017/

Includes the following session:

S-IT21: Do plumes exist?

Convenors: Hidehisa Mashima (hmashima@meiji.ac.jp), Gillian Foulger (g.r.foulger@durham.ac.uk), Dapeng Zhao (zhao@aob.gp.tohoko.ac.jp)

The debate regarding whether anomalous volcanic areas on Earth's surface are fed by deep-mantle plumes is widely considered to be the most significant debate currently ongoing in Earth science. Not only does the debate touch on a fundamental aspect of how Earth works dynamically, but the subject is extraordinarily cross-disciplinary to an extent that probably few scientists fully realize. Sub-disciplines that can contribute to efforts to resolve the debate include sedimentology, palaeontology, tectonophysics, geochronology, volcanology, petrology, geochemistry, geothermal research, seismology, geodesy, electromagnetics and many others. In addition to the disciplines of Earth science, the plume debate provides a remarkable and thought-provoking subject for scientific philosophy and reflections on correct scientific methodology: (1) What exactly is a plume? People often change their definition of a plume a posteriori in order to fit their observations. (2) How can the plume- or the plate hypothesis be falsified? (3) Do Earth scientists tend to present only one possible interpretation of their data, or do papers reflect all possible interpretations? Unfortunately, the former is often the case. (4) Are published interpretations consistent with other data from the subject field area? Often they are not, and the inconsistencies are not sufficiently highlighted nor discussed. These issues are particularly useful for inducting students into correct scientific working. In summary, the debate provides enormously fertile ground for new, fundamental questions and cross-disciplinary research. This session welcomes studies of melting anomalies on Earth from the point of view of any sub-discipline. We also welcomes studies of geological phenomena which are attributed to mantle plumes, such as back-arc extension, plate motion, sedimentary basin formation and lithospheric uplift, and any other work that bears on this fascinating and challenging geological debate.



Geological Society of America (GSA) Cordilleran Section 113-th Annual Meeting

Date: Tuesday, May 23, 2017 — Thursday, May 25, 2017

Location: Honolulu, Hawai'i, USA

Includes the following sessions:

T6. Magmatic processes and sources for hotspot volcanoes

Convenors: Michael Garcia (mogarcia@hawaii.edu), Jasper Konter (jkonter@hawaii.edu)

Contributions that address the nature of the sources and the processes that create and modify magmas erupted at hotspot volcanoes are encouraged.



Geological Society of America (GSA) Rocky Mountain Section 69-th Annual Meeting

Date: Friday, June 9, 2017 — Saturday, June 10, 2017

Location: Calgary, Alberta, Canada

Web: https://www.geosociety.org/rm-mtg

Includes the following session:

T2. Proterozoic evolution of western North America

Convenor: Brian Pratt (brian.pratt@usask.ca)

The enormously thick Meso- and Neoproterozoic successions of the Rocky Mountain region represent a critical interval in Earth history, with shallow- to deep-water deposition, igneous activity, and syntectonic mineralization. This session welcomes presentations on the sedimentology, paleogeography, paleontology, and structural history.



34-th International Conference on Magmatism of the Earth and Related Strategic Metal Deposits

Date: Friday, August 4, 2017 — Wednesday, August 9, 2017

Location: Miass, Russia

Web: http://magmas-and-metals.ru/

Organising chairs: Lia Kogarko (kogarko@geokhi.ru), Valery Vladimirovich Maslennikov, Valery Nikolaevich Udachin



Goldschmidt

Date: Sunday, August 13, 2017 — Friday, August 18, 2017

Location: Paris, France

Web: https://goldschmidt.info/2017/

Includes the following sessions:

03e: Large igneous provinces in the Precambrian and Phanerozoic and their environmental impacts

Convenors: Richard Ernst (richard.ernst@ernstgeosciences.com), Andrey Bekker (andrey.bekker@ucr.edu)

Rapidly accelerating research focused on environmental and climatic change in the Earth System is revealing many robust links with the timing of Large Igneous Provinces (LIPs). Some LIPs with the highest precision U-Pb ages are precisely matched to mass-extinction events. Many LIPs are implicated in a variety of kill and climate change scenarios, including global warming, global cooling (glaciations), anoxia events, acid rain, ocean acidification, toxic gas or metal release, deposition of iron formations, and stepwise oxygenation of the atmosphere. The environmental linkages are becoming particularly clear in the Phanerozoic record but equally extend to the Precambrian, which also has a robust LIP record (with events averaging every 20-30 myr at least through the Proterozoic). This session welcomes contributions that use the sedimentary record to characterize environmental changes that can be linked to LIPs, both in the Phanerozoic and Precambrian. From a complementary perspective, we welcome cutting-edge studies that further our understanding of LIPs generally in terms of temporal distributions, controls, magnitudes, environmental impacts, etc.

03f: Komatiites: witnesses to Earth's history

Convenor: Nicholas Arndt (nicholas.arndt@ujf-grenoble.fr)

Komatiites are a family of ultramafic volcanic/volcaniclastic or subvolcanic rocks that have crystallized from ultra-hot magmas containing between 18 and 31% MgO. Komatiites feature spinifex, a unique and arguably the most beautiful terrestrial rock texture known, comprising elongated skeletal crystals of olivine set in a glassy matrix. Due to high degrees of partial melting, the chemical composition of komatiites resembles that of mantle peridotite. Typical komatiite habitats are Archean greenstone belts; post-Archean komatiite occurrences are rare and usually characterized by lower MgO contents, an observation that has been taken as evidence for secular cooling of the mantle. Komatiites have been widely used to explore how Earth operated from very early on in its existence. They provide unique evidence pertinent to (i) Earth’s thermal history, (ii) the evolution of the oxidation state of the mantle, (iii) the timing of onset of inner core crystallization and mechanisms of core-mantle exchange, (iv) the history of planetary accretion and differentiation, and (v) mixing times of the mantle and evolution of mantle dynamics on Earth. Komatiites also host economically significant magmatic Ni-Cu-HSE ore deposits. This session invites abstracts dedicated to these and related topics across all disciplines of Earth Sciences.

05d: The geochemistry of hotspots and intraplate magmas: mantle sources, metasomatism, magmatic processes and xenolith cargoes

Convenors: Andrea Giuliani (andrea.giuliani@mq.edu.au), Matthew Jackson (jackson@geol.ucsb.edu)

Understanding the composition of the Earth’s interior away from convergent margins is fundamental to constrain the long-term lithosphere recycling as well as the survival of early-formed reservoirs in the modern mantle. Tracing the composition of the deep Earth, including the recycling of surface components, requires investigation of mantle-derived magmas and the xenoliths they entrain during ascent. Partial melting processes in intraplate settings generate a variety of magma compositions, which testifies to the heterogeneous nature of the Earth’s mantle and the complex processes affecting magmas during ascent and emplacement (melt differentiation, mixing, assimilation, degassing, etc). Therefore, the volcanic products observed at the surface commonly require complex – and often model-dependant – deconvolution of the contributions from these processes, to unravel the source signature. This session invites contributions that explore the geochemistry and petrology of hotspot lavas and mantle xenoliths at both oceanic and continental settings. We welcome studies which aim at providing insights into the lithological and geochemical (including stable and radiogenic isotope) composition of mantle sources that are sampled by, and the processes that operate on, intraplate volcanics. We particularly invite research that explores the geochemistry of bulk lavas, melt inclusions, single phases or xenoliths from intraplate volcanic settings including ocean island basalts (OIBs), petit spots, monogenetic basaltic fields, kimberlites and related rocks.

05f: Carbonatites, alkaline magmatism and associated mineral resources

Convenors: Lyderic France (lyde@crpg.cnrs-nancy.fr), Hannes Mattsson (hannes.mattsson@erdw.ethz.ch), Sam Broom-Fendley (s.l.broom-fendley@exeter.ac.uk), Wei Chen (wchencug@163.com)

This session is devoted to the understanding of the origin and evolution of carbonatites and alkaline magmatism in its widest sense, and to related mineral deposits. Contributions focused on the quantification of the igneous and hydrothermal parameters (P, T, X, Xvolatiles, fO2, partition coefficients) are encouraged. Research relying on elemental and isotopic geochemical, petrological, or experimental data connected to the geodynamic context are particularly welcome. Many of the elements of related deposits (e.g., REE, Sr, Nb, Ta, P) are considered as ‘critical metals’ by some governments. Although carbonatites and alkaline rocks are associated with the main REE-deposits on Earth, the origin and evolution of these magmatic/hydrothermal systems remain poorly constrained. This is partly due to their rare occurrence in active igneous systems, and to the lack of relation with geodynamic setting in most of the exhumed fossil systems. Nevertheless, through recent advances in igneous petrology, collaboration with exploration projects, and analytical developments, significant recent advances of our understanding of such systems have been achieved. This session offers an opportunity to discuss these new findings.

06e: Evolution of the continental crust and mantle lithosphere

Convenors: Roberta Rudnick (rudnick@geol.ucsb.edu), Nicholas Arndt nicholas.arndt@ujf-grenoble.fr), Sarah Brownlee (s.brownlee@eri.ucsb.edu)

This session invites contributions related to the composition and evolution of the continental crust and underlying mantle lithosphere. How and when did the continental crust and underlying lithospheric mantle form? Was growth continuous or episodic? Has the composition of the continental crust and mantle lithosphere changed over time? How different were Archean continents to those we have today and by what processes did they form? What is the relationship between the lithospheric mantle and overlying crust? We welcome contributions to the session from geochemists, petrologists, geophysicists and modelers.



International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI) Scientific Assembly

Date: Monday, August 14, 2017 — Friday, August 18, 2017

Location: Portland, Oregon, USA

Web: http://iavcei2017.org/

Includes the following session:

II.9. Continental large igneous provinces: understanding processes of magma formation, storage, evolution, and eruption

Convenors: Dylan Colon (dcolon@uoregon.edu), Anita Grunder (grundera@geo.oregonstate.edu), Stephen Self (sself@berkeley.edu), Wendy Bohrson (bohrson@geology.cwu.edu), Paul Renne (prenne@bgc.org), Erika Rader (erika.rader@nasa.gov), John Wolff (jawolff@wsu.edu)

Large igneous provinces are characterized by extreme volumes (~106 km3) of magma erupted in geologically short time periods. These include the well-known flood basalt provinces and the associated evolved magmas that accompany nearly all such systems. In most cases, there are also hotspot tracks that are temporally and spatially connected to the flood basalt (e.g., Yellowstone-Columbia River Basalt province). We seek contributions that will help to better understand large igneous provinces and their associated hotspot tracks, with an emphasis on those that occur in continental crust. Relevant questions include: Where are the melts produced, including both the initial basalts and the most evolved rhyolites? What are the primary sources of chemical diversity in magmas, and what are the relative contributions of crustal melting, magma recharge, and fractional crystallization to this diversity? How does crustal composition influence the style of volcanism and the composition of erupted magmas? What role does tectonics play? What are the timescales of magma formation, differentiation, and eruption in these systems? What are the environmental impacts of these eruptions? We encourage submissions from a range of disciplines, including volcanology, petrology, geochemistry, computational modeling, and geophysics. Interdisciplinary studies are particularly encouraged.



Volcanic and Magmatic Studies Group (VMSG) Annual Meeting

Date: Wednesday, January 3, 2018 — Friday, January 5, 2018

Web: https://vmsg2018.leeds.ac.uk/

Convenors: Jurgen Neuberg (j.neuberg@leeds.ac.uk), Vernon Manville (v.r.manville@leeds.ac.uk)



Nordic Geological Winter Meeting

Date: Wednesday, January 10, 2018 — Friday, January 12, 2018

Web: http://2dgf.dk/foreningen/33rd-nordic-geological-winter-meeting/

Includes the following sessions:

1.1. Hotspots and intraplate magmas: mantle sources, magmatic processes and metasomatism

Convenors: Nina Soager (ns@ign.ku.dk), Valentin Troll (valentin.troll@geo.uu.se), Abi Barker (abigail.barker@geo.uu.se)

This session invites contributions that explore the mantle geochemistry, petrology and dynamics of intraplate volcanism both in oceanic and continental settings. We welcome studies of the temporal and spatial evolution of mantle plumes in terms of composition, temperature, sources, magma chamber processes and surface expressions. We also encourage contributions addressing mantle metasomatism, the interaction between asthenospheric melts and lithospheric mantle and the tectonic processes triggering intraplate magmatism. We invite research that explores the geochemistry of bulk lavas (including isotopes), melt inclusions, single phases (including mineral-mineral and mineral-melt equilibria) or xenoliths from intraplate volcanic settings such as ocean islands, intracontinental basaltic fields and highly alkaline rocks.

1.3. Understanding large igneous provinces and associated rapid environmental changes: from the North Atlantic Igneous Province and beyond

Convenors: Sverre Planke (planke@vbpr.no), Christian Tegner (christian.tegner@geo.au.dk), Dougal Jerram (dougal@dougalearth.com)

Large Igneous Provinces (LIPs) are known to correlate in time with periods of mass extinctions and global warming in Earth history. This session aims at presenting new observations and results on; the formation of lips, on mass extinction intervals, and on the possible causal relationships between lips and associated environmental changes. This may include stratigraphic and proxy records of mass extinction, documentation of the petrology, chronology and geophysics of lips, petrogenetic processes, links to modern plume related volcanism, and modelling. Focus will be on the North Atlantic lip and how it may have triggered the Paleocene-Eocene thermal maximum (PETM). However, contributions on other lips and environmental crises, such as the end-Permian, the end-Triassic, and the end Cretaceous extinctions, are also welcome.



Lyell Meeting 2018: Mass extinctions – understanding the world’s worst crises

Date: Thursday, March 8, 2018 — Thursday, March 8, 2018

Web: https://www.geolsoc.org.uk/lyell18

Convenors: Paul Wignall (p.b.wignall@leeds.ac.uk), David Bond (d.bond@hull.ac.uk)

The study of mass extinctions is one of the most interdisciplinary research areas within Earth and environmental sciences. Recent, major advances have come from a broad spectrum of fields, including atmospheric modelling, high-precision age dating, volcanology, geochemistry, stratigraphy and palaeontology.

The 2018 Lyell Meeting aims to highlight these achievements and showcases the improved understanding we now have of the great environmental catastrophes of the past. The Meeting aims to encompass the full spectrum of crises seen in the Phanerozoic fossil record.

The 2018 Lyell Meeting provides a platform to assess the current stratigraphic and geochemical records of environmental change during mass extinction events and the role of atmospheric climate modelling in understanding the causes of the crises. The goal is to evaluate the relative importance of environmental changes in major episodes of species extinctions, and to further explore the mechanisms that link these proximal kill mechanisms to the ultimate drivers, such as large igneous province eruptions and meteorite impacts.

This will be a rare opportunity to hear research developments happening in diverse disciplines applied to all mass extinction events. 



European Geosciences Union (EGU) General Assembly

Date: Sunday, April 8, 2018 — Friday, April 13, 2018

Web: https://www.egu2018.eu/

Includes the following sessions:

IE2.6/SSP2.2/CL4.23/GMPV1.9 Past and future mass extinctions and environmental change: where do we stand?

 

Convenors: Thierry Adatte (thierry.adatte@unil.ch), Sverre Planke (planke@vbpr.no), Henrik Svensen (henrik.svensen@mn.uio.no), Andrea Marzoli (andrea.marzoli@unipd.it), Eric Font (font_eric@hotmail.com), David Bond (d.bond@hull.ac.uk)

IE2.3/AS3.10/CL4.22/GMPV6.4/NH2.2 Characterizing, understanding and predicting the radiative effects and the climatic impacts of major volcanic eruptions

 

Convenors: Davide Zanchettin (davide.zanchettin@unive.it), Myriam Khodri (myriam.khodri@locean-ipsl.upmc.fr), Graham Mann (g.w.mann@leeds.ac.uk), Claudia Timmreck (Claudia.timmreck@mpimet.mpg.de), Matthew Toohey (mtoohey@geomar.de)



Institute on Lake Superior Geology (ILSG) Annual Meeting

Date: Wednesday, May 16, 2018 — Thursday, May 17, 2018

Web: http://www.lakesuperiorgeology.org/



Resources for Future Generations 2018

Date: Saturday, June 16, 2018 — Thursday, June 21, 2018

Includes the following sessions:
EA36: Igneous processes and climate change over all of Earth history

Volcanism and igneous activity have led to weather and climate change on time scales ranging from billions of years to hours. With recent climate change impacting the destiny of our planet, petrologists have important contributions to make in understanding how Earth's climate is evolving. This session welcomes presentations on how igneous activity created Earth's earliest environments through to how historical eruptions impacted weather and climate.
Includes the following post-conference one-day short courses:
Large igneous province research frontiers (including resource explanation and climate change)

Date: 22 June
Facilitator: Richard Ernst (richard.ernst@ernstgeosciences.com)

This one-day short course will provide a provide a ‘state of the art’ training in all aspect of Large Igneous Provinces (LIPs) with a focus on research frontiers related to resource exploration and environmental/ climate change. The basics will be covered in the morning sessions: continental and oceanic flood basalts and their plumbing systems (layered intrusions, sills, dykes & deep crustal underplating). There will be an overview of additional topics: Archean LIPs, planetary analogues, associated Silicic LIPs (SLIPs), carbonatites and kimberlites, origin (plume & alternatives), links to continental breakup and the supercontinent cycle, geochemistry, associated topographic effects (regional uplift & basin formation) & associated compressional tectonics. The afternoon sessions will first focus on links with resource implications (metallogeny, oil/gas and aquifer systems). The links with a broad range of commodity types are captured in our 5-part classification system and we will also present our latest strategies for using the LIPs record in multi-commodity, multi-scale exploration targeting. The second afternoon focus will be on the rapidly developing links with dramatic environmental & climate change including mass extinction events. We summarize the latest research on the role of LIPs (and SLIPs) in dramatically changing atmospheric and oceanic composition through time, including global warming, glaciations, anoxia, step-wise oxygenation, acid rain/ocean acidification, enhanced hydrothermal and terrestrial nutrient fluxes, and mercury poisoning.



Goldschmidt

Date: Sunday, August 12, 2018 — Friday, August 17, 2018

Web: https://goldschmidt.info/2018/index

Includes the following sessions:

04h Large Igneous Provinces, environmental change and mass extinctions: the deadly kiss of LIPs

Convenors: Feifei Zhang (fzhang48@asu.edu), Aisha Al-Suwaidi (aalsuwaidi@pi.ac.ae), Richard Ernst (richard.ernst@ernstgeosciences.com), Ying Cui (ying.cui@dartmouth.edu)

There is an increasing recognition of the role of Large Igneous Provinces (LIPs) in major environmental perturbations and mass extinction events. LIPs can affect the atmosphere and ocean through a wide array of processes including, but not limited to, carbon cycle perturbations, global warming, global cooling, acid rain, ash clouds, and enhanced hydrothermal and terrestrial nutrient fluxes . Some of these factors, in return, can lead to mass extinctions through eg. ocean anoxia and acidification and mercury poisoning. However, our current understanding of the connections between LIPs, environmental change, and mass extinctions is incomplete in many ways. The goal of this session is to bring together researchers approaching this problem from multiple perspectives. We welcome contributions that show: (1) geological, geochemical evidences of LIPs throughout geological time; (2) geochronological constraints on LIPs, (3) the interactions between the effects (direct and indirect) of LIPs and climatic change, (4) reconstructing changes in global weathering regime across the LIPs, (5) spatiotemporal constraints on marine chemical conditions (e.g., redox conditions, and ocean acidification) throughout LIPs from inorganic and organic proxies; (6) investigations of causal links between LIPs, environmental conditions, and the diversity and ecological structure of marine ecosystems during mass extinctions and subsequent recoveries. While these themes are best developed in the Phanerozoic we are also interested in contributions that identify Precambrian examples.



Magmatism of the Earth and Related Strategic Metal Deposits

Date: Monday, September 3, 2018 — Friday, September 7, 2018

Web: http://emsmd.ru/

Organising committee contact: alkaline.conference@gmail.com