Date: Tuesday, January 8, 2019 — Thursday, January 10, 2019
Web: https://vmsg666952477.wordpress.com/
All enquiries: vmsguk@gmail.com
Date: Sunday, March 17, 2019 — Tuesday, March 19, 2019
Web: https://www.geosociety.org/GSA/Events/Section_Meetings/GSA/Sections/ne/2019mtg/home.aspx
Includes the following sessions:
T1. The formation and evolution of Iceland: magmatic, tectonic, and geomorphological processes
Convenors: Brennan Jordan (Brennan.Jordan@usd.edu), Tamara Carley (carleyt@lafayette.edu), Tenley Banik (tjbanik@ilstu.edu)
In this session, the Northeastern Section, for the first time, is looking toward the eastern margin of the North American Plate, and at Iceland in particular. This theme session is stand alone and separate from the July 2019 field trip to Iceland. However this session will provide invaluable learning opportunities for students and professionals interested in Iceland geology and especially for those who will attend the Iceland field trip. Contributions are encouraged on all aspects of the petrology, volcanology, tectonics, and geomorphology of Iceland and surrounding areas.
Date: Monday, March 25, 2019 — Wednesday, March 27, 2019
Web: https://www.geosociety.org/GSA/Events/Section_Meetings/GSA/Sections/sc/2019mtg/home.aspx
Includes the following sessions:
T9. Mafic and ultramafic magmatism in the Mid-Continent and beyond
Convenors: Matthew Brueseke (brueseke@ksu.edu), Pamela Kempton (pkempton@ksu.edu)
This session will highlight ongoing research on the petrogenesis, emplacement, and/or styles of volcanism of mafic and ultramafic magmas. Studies of associated xenoliths and links to economically significant mineralization are also welcome. This has an emphasis is on the mid-continent USA–Canada; however, we certainly encourage submissions that deal with the processes from everywhere.
Date: Thursday, March 28, 2019 — Friday, March 29, 2019
Web: https://www.geosociety.org/GSA/Events/Section_Meetings/GSA/Sections/se/2019mtg/home.aspx
Includes the following sessions:
T14. Origin and significance of ultramafic bodies in suture zones from the Appalachian and beyond
Convenors: Celine Martin (cmart175@uncc.edu), Christopher Bailey (cmbail@wm.edu)
Ultramafic rock bodies are found in suture zones of Cenozoic to Precambrian age, but their tectonic origin is still enigmatic. This session is intended to highlight new research focused on the petrogenesis and tectonic history of ultramafic units from the Appalachians and other orogens.
Date: Sunday, April 7, 2019 — Friday, April 12, 2019
Includes the following sessions:
GD1.1/GMPV2.10/SM1.13/TS9.6 Global tectonics and links between surface and deep mantle processes: a tribute to Kevin Burke
Convenors: Mat Domeier (mathew.domeier@geo.uio.no), Lewis Ashwal (lewis.ashwal@wits.ac.za), Susan Webb (susan.webb@wits.ac.za)
Kevin Burke (1929-2018) was one of the greatest geologists of our time and his original and thought-provoking contributions were published steadily for six decades. In this session we commemorate the pioneering work of Kevin and contributions are invited from across the diverse fields that interested him, including Plate Tectonics and the Wilson Cycle at large, the origin of Precambrian greenstone belts, the evolution of the Caribbean and the uplift history of Africa. Kevin often asserted that plate tectonics is an incomplete theory without a clear understanding of its interaction with mantle plumes. He therefore set out to explore this issue more than a decade ago, and with collaborators proposed a simple conceptual mode where the link between plate tectonics and the Earth's deep mantle can be viewed as a simple mass-balance: subducted lithospheric slabs restore mass to the mantle and trigger a return flow toward the surface—including mantle plumes—rising from the margins of two stable and antipodal thermochemical piles in the lowermost mantle. The surface manifestations of plumes include large igneous provinces which punctuate the process of plate tectonics via the creation of new plate boundaries. We welcome contributions that examine surface and deep Earth links based on both observations and numerical models (although notably the latter never seduced Kevin).
SM4.7/GD3.5/GMPV7.6/TS9.5 Hotspots, LIPs and LLSVPs: a global investigation with joint constraints from geochemistry, seismology and geodynamics
Convenors: Maria Tsekhmistrenko (maria.tsekhmistrenko@seh.ox.ac.uk), Catherine Chauvel (catherine.chauvel@univ-grenoble-alpes.fr), Cinzia Farnetani (cinzia@ipgp.fr), Alessandro Forte (forte@ufl.edu), Bernhard Steinberger (bernhard.steinberger@geo.uio.no)
Seismic tomography images large low-velocity provinces (LLVPs) at the core-mantle boundary (CMB), deep mantle plumes, and the connection between them. Geochemistry provides constraints on the age and nature of the material sampled by plumes. Geodynamic modelling suggests interaction of subducting slabs with low-velocity piles at the CMB and traces the geographical source of erupted material. What is needed now is to combine approaches and confront observations from the different fields to build a clear picture of the link between deep structures and surface expressions in volcanoes.
This session aims to bring together scientists from these different fields to better constrain the complex processes in the mantle at all depths with a focus on mantle plumes. We invite contributions from (1) seismic observations and seismic tomography models of mantle plumes and LLSVPs. (2) geodynamic modelling on the origin of LLSVPs and their connection to mantle plumes. (3) tectonic studies with new data (or old data with new flavour). (4) geochemical and petrological studies constraining the nature and evolution of thermochemical plumes. (5) all studies that use novel data collection and visualization techniques to further understand deep mantle structures and their connections to the surface observables.
GD2.1/CL1.33/PS1.12/SM4.19/TS9.9 Plume-lithosphere interactions: geodynamic, tectonic, geophysical, geochemical and planetological evidence
Convenors: Alexander Koptev (alexander.koptev@ifg.uni-tuebingen.de), Anouk Beniest (a.beniest@vu.nl), Taras Gerya (taras.gerya@erdw.ethz.ch)
The emplacement of mantle plumes below lithosphere of different origin and structure is one of the key questions for understanding the 4.5 billion years Earth’s and planetary (e.g., Venus, Mars) evolution and tectonic, seismic and magmatic activity. Although it is widely known that focused mantle upwelling can result in thinning of lithosphere and associated voluminous melt generation, the exact consequences of plume-lithosphere interaction on for example surface evolution and intraplate deformation remain in many aspects unclear. This problem becomes even more acute in the light of current debates on the significance of the lithosphere rheology and lithosphere-asthenosphere boundary and the contribution of mantle plumes to long-term terrestrial and planetary climate change through greenhouse gas emissions from intensive volcanic activity. The methods used to discover plumes, visualize them and understand their behavior vary greatly. We aim with this session to bring together scientists from different fields to exchange their methods and results about mantle plume research. We invite abstracts that offer new insights into the interaction between the plume head and the overlying lithosphere from geophysics, geochemistry, geology, geomorphology, geodynamics, planetology and paleoclimatology perspectives.
Date: Wednesday, May 8, 2019 — Thursday, May 9, 2019
Web: https://www.lakesuperiorgeology.org/
Date: Sunday, May 12, 2019 — Wednesday, May 15, 2019
Web: https://gacmac-quebec2019.ca/
Includes the following sessions:
SS-RE14 Recent advances on ore-forming processes related to magmatic Ni-Cu-PGE, Cr-PGE, and Fe-Ti-V deposits and their implications for mineral exploration
Convenors: Michel Houle (michel.houle@canada.ca), Jennifer Smith (jennifer.smith6@canada.ca), Anne-Aurelie Sappin (anne-aurelie.sappin@canada.ca)
Magmatic ore deposits of Ni-Cu-PGE, Cr-PGE, and Fe-Ti-V represent an important class of mineral deposits, forming the foundation to a number of established and emerging mining camps across Canada. These commodities are recovered from many different mineral deposit types that are primarily of magmatic origin, and associated with mafic to ultramafic rocks that are commonly altered to some degree by secondary processes. Canada is endowed with a wide range of magmatic environments favourable for economic concentrations of Ni-Cu-PGE, Cr-PGE, and Fe-Ti-V mineralization that are neither temporally nor geographically restricted. World-class deposits are increasingly difficult to find and exploit, and consequently a global perspective is required to understand such factors as geological setting, plumbing system architecture, country rocks interaction, transport and deposition of ore-forming minerals, and the causes of subsequent modification (e.g., late-stage magmatic-hydrothermal alteration and deformation).
This special session is seeking to address key ingredients for the genesis of economic Ni-Cu-PGE, Cr-PGE, and Fe-Ti-V mineralization within established and emerging mining camps in Canada and elsewhere around the world.
SS-RE1 The cratonic mantle, its carbonate-rich melts, kimberlites and carbonatites
Convenors: Maya Kopylova (mkopylov@eos.ubc.ca), Anton Chakhmouradian (Anton.Chakhmouradian@ad.umanitoba.ca)
Canada is a geologic heaven for those who want to study cratons and their volumetrically insignificant, but economically important carbonate-rich mantle melts. We invite contributions on the composition, architecture and petrology of the cratonic mantle, the birthplace of kimberlites, carbonatites and other related mantle melts. Is metasomatism central to the generation of these melts, and if so, what kind of metasomatism? Why are kimberlites and carbonatites commonly separated in space or time? A significant part of the session will be devoted to mineralogical, petrological and volcanological characterization of kimberlite and carbonatite bodies. The complex mineralogy of these rocks is rooted in complex textures controlled by fragmentation and interaction with the wall rocks. We hope the session will bring together kimberlite and carbonatite scholars and their synergy will enable new insights into the composition and emplacement of primary carbonate-rich melts from the subcratonic mantle.
Date: Wednesday, May 15, 2019 — Friday, May 17, 2019
Web: https://www.geosociety.org/GSA/Events/Section_Meetings/GSA/Sections/cd/2019mtg/home.aspx
Includes the following sessions:
T13. The Yellowstone Hotspot Province: prehistory, timing, extent, volcanic products, and hydrothermal consequences
Convenors: Arron Steiner (arron@wsu.edu), John Wolff (jawolff@mail.wsu.edu), Martin Streck (streckm@pdx.edu)
This session will focus on volcanism of the Yellowstone hotspot, including Miocene–Quaternary units of the Columbia River Basalts, Snake River Plain, High Lava Plains, and northern Nevada. Included topics: timing and extent; Oligocene and earlier precursor magmatism; magma dynamics and crustal melts; consequences of associated hydrothermal activity; and crustal modification. (Both oral & poster.)
T14. Magmatism of the Columbia River Flood Basalt Province
Convenors: Seth Burgess (sburgess@usgs.gov), Michael Sawlan (msawlan@usgs.gov)
This session focuses on the evolution of the Columbia River flood basalt province as viewed from diverse perspectives, including (but not limited to) geochemistry, geochronology, stratigraphy, volcanology, and geophysics. (Oral.)
Date: Monday, July 8, 2019 — Thursday, July 18, 2019
Web: http://iugg2019montreal.com/
Includes the following sessions:
V09 – The role of LIPs in environmental change and biotic extinctions on Earth over geologic time
Convenors: Richard Ernst (richard.ernst@ernstgeosciences.com), Mike Widdowson (m.widdowson@hull.ac.uk), Simon Jowitt (simon.jowitt@unlv.edu), Ingrid Ukstins Peate (ingrid-peate@uiowa.edu)
This symposium, sponsored by the Large Igneous Provinces Commission (www.largeigneousprovinces.org), focuses attention on the growing recognition that large Igneous Provinces (LIPs) and silicic LIPs (SLIPs) (Bryan & Ferrari 2013, GSAB, v. 125, p. 1053–1078; Ernst, 2014 Cambridge U. Press) can be major drivers of rapid climate change (e.g., Ernst & Youbi, 2017, PPP, v. 478, p. 30-52; Bond & Grasby, 2017 PPP, v. 478, p. 3-29), including global warming (hothouse events), global cooling (icehouse events), anoxia, stepwise oxygenation of the atmosphere, sustained chemical attack on atmospheric chemistry and ozone destruction, acid rain and ocean acidification, enhanced hydrothermal and terrestrial nutrient fluxes, and mercury poisoning. Most dramatically, Phanerozoic mass extinction events can be temporally linked to LIP emplacement. We welcome research that investigates the role of LIPs in Phanerozoic and Precambrian climate change, particularly those that utilize the sedimentary record to monitor global environmental impact, and also research that assesses selected major LIP events (and their global environmental impact) as natural timescale boundaries in the Proterozoic.
Date: Sunday, August 18, 2019 — Friday, August 23, 2019
Web: https://goldschmidt.info/2019/index
Includes the following sessions:
08i. Large Igneous Provinces, environmental change and mass extinctions: the deadly kiss of LIPs
Convenors: Richard Ernst (richard.ernst@ernstgeosciences.com), Ying Cui (cuiying00@gmail.com), Yogaraj Banerjee (ybanerjee15@gmail.com), Prosenjit Ghosh (pghosh@iisc.ac.in)
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.
Date: Monday, September 2, 2019 — Thursday, September 5, 2019
(plus optional field trips before and after)
Web: http://geoconf.tsu.ru/lip2019/english/
All enquiries: liptomsk2019@gmail.com