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GSA 2020 ANNUAL MEETING
T31. Precambrian Basin Analysis PETROLOGY, IGNEOUS
Cosponsors: GSA Structural Geology and Tectonics Division;
GSA Sedimentary Geology Division T35. Building the SZ4D Magmatic Drivers of
Disciplines: Precambrian Geology, Stratigraphy, Structural Geology Eruption Theme: Geologic Evidence from Active
Advocates: Marcus Kunzmann; Justin V. Strauss; Galen P. Halverson and Exhumed Arcs
This session brings together practitioners of Precambrian basin Cosponsors: GSA Mineralogy, Geochemistry, Petrology, and
analysis to discuss recent advances in the field, as well as to iden- Volcanology Division; GSA Geophysics and Geodynamics
tify future advances that are necessary to approach the resolution Division; GSA Structural Geology and Tectonics Division
possible in younger basins. Disciplines: Petrology, Igneous, Volcanology, Geophysics/
Geodynamics
T32. Assembling Laurentia: Turning Points in Advocates: Terry A. Plank; Ayla S. Pamukcu; Benjamin A. Black;
Paleoproterozoic Tectonic Evolution Michael P. Eddy; Emily J. Chin
Cosponsors: Mineralogical Society of America; GSA Mineralogy, This SZ4D session highlights ongoing research across a range
Geochemistry, Petrology, and Volcanology Division; GSA of geoscience techniques that further our understanding of the
Structural Geology and Tectonics Division transcrustal magmatic processes that lead to volcanic eruptions in
Disciplines: Precambrian Geology, Tectonics/Tectonophysics, subduction systems.
Petrology, Metamorphic
Advocates: David Corrigan; Camille A. Partin; Kevin H. Mahan T36. Experimental and Petrologic Investigation of
The session will focus on growth and assembly of the continental Halogens, Sulfur, and Other Volatile Species in
nuclei that amalgamated to form Laurentia in the Paleoproterozoic, Igneous Systems: In Honor of Jim Webster
as well as key processes (thermal, mechanical, magmatic, deposi- Cosponsors: Geochemical Society; Mineralogical Society of
tional, metallogenic, etc.) that define that era. America; GSA Mineralogy, Geochemistry, Petrology, and
Volcanology Division
T33. Evolving Perspectives on the Tonian Biosphere Disciplines: Petrology, Igneous, Volcanology, Mineralogy/
and Environmental Change Crystallography
Cosponsors: GSA Geobiology and Geomicrobiology Division; Advocates: Justin Filiberto; Daniel Harlov
Geochemical Society; Paleontological Society; GSA Sedimentary This session is dedicated to Jim Webster, who devoted his profes-
Geology Division sional career, both in the lab and in the field, to a broad study of
Disciplines: Precambrian Geology, Geochemistry, Paleontology, halogens, sulfur, and other volatile species in igneous environments.
Diversity, Extinction, Origination
Advocates: Timothy M. Gibson; Peter W. Crockford; Ashleigh T37. Rapakivi Granites and Associated A-Type Granites
v.S. Hood; Anne-Sofie C. Ahm Cosponsors: Mineralogical Society of America; GSA Mineralogy,
This session aims to consolidate recent advances in the timeline Geochemistry, Petrology, and Volcanology Division
and nature of biological evolution and environmental change Disciplines: Petrology, Igneous, Geochemistry
through the Tonian Period. Advocates: Ryan Currier; Tim P. Flood
This session will focus on research devoted to the origin and
T34. Exploring Earth’s Adolescence between the evolution of rapakivi granites and/or associated A-type granites,
Great Oxidation Event and the Tonian Period based on recent considerations of the chemical, textural, tectonic,
Cosponsor: GSA Geobiology and Geomicrobiology Division or temporal relationship of these rocks.
Disciplines: Precambrian Geology, Geochemistry, Stratigraphy
Advocates: Malcolm S.W. Hodgskiss; Peter W. Crockford; PETROLOGY, METAMORPHIC
Marcus Kunzmann
Recent years have seen the proliferation of studies on the mid- T38. From the Micro to Macro in Metamorphic
Proterozoic (or “boring billion”). This session aims to explore this Geology: Constraining Tectono-Metamorphic Pro-
broad interval in Earth history using the integrated geochemical, cesses with High-Resolution Approaches: In Honor
geochronological, paleontological, and rock records. of Mineralogical Society of America Roebling
Medalist Andrew Putnis
Cosponsors: GSA Mineralogy, Geochemistry, Petrology, and
Volcanology Division; Mineralogical Society of America;
GSA Structural Geology and Tectonics Division

INDUSTRY TRACKS Look for these icons, which identify sessions in the following areas:

Economic Geology Energy Engineering Hydrogeology and
Environmental Geology

22 GSA Today | May 2020