Date: Wednesday, January 6, 2021 — Friday, January 8, 2021
Web: https://www.geolsoc.org.uk/01-VIRTUAL-EVENT-VMSG-Annual-Meeting
Contact: janine.kavanagh@liverpool.ac.uk
Date: Sunday, April 18, 2021 — Tuesday, April 20, 2021
Web: https://www.geosociety.org/GSA/Events/Section_Meetings/GSA/Sections/nc/2021mtg/home.aspx
Includes the following sessions:
T16. Ultramafic and mafic magmatism
Convenors: Gary Michelfelder (GaryMichelfelder@MissouriState.edu), Matthew Brueseke (brueseke@ksu.edu) and Alison Graettinger (graettingera@umkc.edu)
Ultramafic and mafic magmas enable the study of large-scale tectonic processes or magma production down to local structures, event chronologies, and hazards. This session welcomes petrologic, geochemical, and structural studies that utilize ultramafic/mafic rocks to study the formation, transport, and eruption of magmas and related geologic histories.
Date: Monday, April 19, 2021 — Friday, April 30, 2021
Includes the following sessions:
SSP1.3. Mass extinctions, volcanism, impacts and extreme environmental changes
Convenors: Alicia Fantasia (alicia.fantasia@geo.au.dk), Thierry Adatte (thierry.adatte@unil.ch), David Bond (d.bond@hull.ac.uk), Sverre Planke (planke@vbpr.no) and Nicolas Thibault (nt@ign.ku.dk)
This session will investigate how massive volcanism and meteorite impacts may cause mass extinctions and global environmental changes. We hope to bring together researchers from the geological, geophysical, and biological disciplines to present new and exciting results, and encourage interdisciplinary and modelling studies. The session will focus on the five major Phanerozoic crises (end-Ordovician, end-Devonian, end-Permian, end-Triassic, end-Cretaceous) and other related paleoenvironmental crises (e.g. Anthropocene, the Paleocene-Eocene Thermal Maximum (PETM) and Oceanic Anoxic Events (OEAs) in the Mesozoic).
Date: Wednesday, May 12, 2021 — Friday, May 14, 2021
Web: https://www.geosociety.org/GSA/Events/Section_Meetings/GSA/Sections/cd/2021mtg/home.aspx
Includes the following sessions:
T17. Large silicic systems: uncovering their histories using whole-rock, mineral-scale, and textural analysis
Convenors: Heather Winslow (hwinslow@nevada.unr.edu), Ellyn Huggins (eghuggins@nevada.unr.edu) and Brad Pitcher (bradley.w.pitcher@vanderbilt.edu)
The Cordillera presents a unique opportunity to investigate the evolution of large silicic systems in the volcanic and plutonic record from magma assembly and storage, to ascent through the crust and surficial expressions. This can be studied through a variety of methods, including field observations, geochemistry, petrology, and crystal-scale analyses.
Date: Monday, May 17, 2021 — Wednesday, May 19, 2021
Includes the following sessions:
SS-20 Secular evolution of the Earth’s paleogeography, geodynamic processes and geodynamo
Convenors: Phil McCausland (pmccausl@uwo.ca), Bruce Eglington (bruce.eglington@usask.ca) and David Evans (david.evans@yale.edu)
Supercontinent cycles reflect the cycling of the Earth’s lithosphere across the globe and with the mantle as a source region and a sink, primarily for oceanic lithosphere. This cycling takes place within a context of long term secular evolution of the Earth, for instance to become cooler over time. This session calls for contributions of new observations, syntheses, theory and modelling that can refine constraints on Precambrian and Paleozoic geodynamic processes, and how they may have changed over the history of the Earth. Such contributions could include paleogeography and paleogeographic cycles, the evolution of dominant geodynamic processes such as mantle (un)mixing, plume interactions with the core mantle boundary and the lithosphere, true polar wander, and the evolution of the Earth’s thermal regime, including geodynamo evolution. Exploration of the linkages between these Solid Earth systems with paleoclimate, volatiles and the biosphere are also welcome.
Date: Sunday, July 4, 2021 — Friday, July 9, 2021
Web: https://2021.goldschmidt.info/goldschmidt/2021/meetingapp.cgi
Includes the following sessions:
5i. Large Igneous Provinces: a driver of global environment and biotic crises
Convenors: Sara Callegaro (sara.callegaro@geo.uio.no), Richard Ernst (richard.ernst@ernstgeosciences.com), Joshua Davies (davies.joshua@uqam.ca), Shuan-Hong Zhang (tozhangshuanhong@163.com), Don Baker (don.baker@mcgill.ca) and Urs Schaltegger (urs.schaltegger@unige.ch)
Large Igneous Provinces (LIPs) and their silicic counterparts, Silicic LIPs (SLIPs), are increasingly recognised as drivers of profound changes to the atmosphere, ocean and biosphere. These can include global warming, global cooling, anoxia, oxygenation, acid rain, ocean acidification, enhanced hydrothermal and terrestrial nutrient fluxes, and poisoning of the ecosystems via mercury or halocarbon discharge, even culminating in mass extinction events. Gas release from volcanism is a key culprit, but the intrusive component of these magmatic episodes is gaining growing attention. Igneous and metamorphic processes occurring during LIPs (SLIPs) emplacement can lead to thermogenic gas production, released via hydrothermal venting, resulting in chemical weathering, ash clouds affecting Earth’s albedo, hydrothermal release of reductants, nutrients and metals to the hydrosphere. Defining quantitative gas discharge scenarios and the tempo of intrusive and effusive magmatism through high-resolution geochronology is of primary importance in detailing the connection between LIPs (SLIPs) and the global environment. It is equally important to deconvolve the effects (direct and indirect) of LIPs (SLIPs) magmatism from other drivers of climate change, and to assess the limits of the LIP effect. Presentations are welcomed on all of these aspects.
Date: Monday, August 16, 2021 — Saturday, August 21, 2021
Includes the following symposia:
6.2. Deccan volcanism and its role in mass extinction and paleobiodiversity
Convenors: Gerta Keller (gkeller@princeton.edu), N Malarkodi (nallamuthumalarkodi@gmail.com)
Extinction events are important factors in the history of life on Earth, and many studies suggest catastrophic causes for at least some major mass extinctions. Two types of catastrophic event have been invoked: major impacts by asteroids or comets and episodes of continental flood basalt volcanism. Of the five major mass extinctions in Earth’s history, only the Cretaceous–Tertiary (K–T) mass extinction has been positively linked to an asteroid impact/ continental flood basalts (CFB), Over the past decade continental flood basalts (CFB) have been correlated with most major mass extinctions leading to suggest that this may be the general cause of mass extinctions. The symposium will cover various aspects on volcanism and its role in mass extinction and paleobiodiversity and the key note addresses are arranged besides technical sessions.
16.1. Large igneous provinces and their plumbing systems
Convenors: Rajesh Srivastava (rajeshgeolbhu@bhu.ac.in), Richard Ernst (richard.ernst@ernstgeosciences.com)
This symposium intends to discuss the temporal and spatial distribution of LIPs, their origin and links to mantle plumes, mafic dykes and dyke swarms, superplume events, supercontinent reconstructions, climate changes (including mass extinctions) and associated metallogeny.