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GSA CONNECTS 2021
This session brings together proxy and model research into the PETROLOGY, IGNEOUS
complex development of Andean topography and impacts on chang-
ing hydroclimate and environments, to evaluate current knowledge T21. From the Afar Rift to Alaskan Arcs (and the
on the establishment of the South American Monsoon system. Oregon Plateau in between): Honoring the Career
and Contributions of William K. Hart
VOLCANOLOGY Endorsers: GSA Mineralogy, Geochemistry, Petrology, and
Volcanology Division; Geochemical Society
T17. Mapping the West: Honoring the Contributions Disciplines: Petrology, Igneous, Volcanology, Tectonics/
of David Sherrod to Understanding of the Geologic Tectonophysics
History of Volcanic Terranes (Posters) Advocates: Matthew Brueseke; Kurt Shoemaker
Endorser: Geochemical Society Bill Hart’s research-mentoring has improved our understanding
Disciplines: Volcanology, Quaternary Geology, Hydrogeology of the evolution of northwestern U.S. basalt provinces, southern
Advocates: Jim O’Connor; Kenneth E. Lite Jr. Alaska, and the Afar Depression. We welcome studies from these
In recognition of the contributions of David Sherrod, this ses- regions focused on magmatism, especially building on Bill’s work.
sion aims to assemble presentations on recent geologic mapping
and advances in geologic history and processes, and their interdis- T22. Rhyolites, Take a Bow! Examining the Produc-
ciplinary applications, with a focus on volcanic terranes of tion of Rhyolite Magma in Continental Arc Settings
western North America. Endorsers: Geochemical Society; GSA Geochronology Division
Disciplines: Petrology, Igneous, Volcanology, Geochronology
T18. The Dynamics and Hazards of Advocates: Erik Klemetti; Hannah Shamloo; Adam J.R. Kent
Hydrovolcanic Systems (Posters) Rhyolite should be a common composition across continental
Endorsers: IAVCEI Volcano–Ice Interaction Commission; GSA arcs. However, they are not as ubiquitous as it seems. What con-
Marine and Coastal Geoscience Division; Geochemical Society nections can be made between arcs? We encourage submissions
Disciplines: Volcanology, Hydrogeology, Energy Geology on the explosive topic of rhyolite magmatism and volcanism in
Advocates: Erin Fitch; Alison Graettinger; Ryan Cahalan continental arcs.
This multidisciplinary session brings together studies on the
breadth of interactions between volcanoes and water, including T23. The How, When, Where, and Why of Open-
phreatomagmatism, phreatic eruptions, hydro- and geothermal System Magma Processes
systems, volcanic lakes, volcanic floods and debris flows, subma- Endorsers: GSA Mineralogy, Geochemistry, Petrology, and
rine eruptions, and glaciovolcanism. Volcanology Division; GSA Planetary Geology Division; GSA
Geochronology Division; Geochemical Society
STRUCTURAL GEOLOGY Disciplines: Petrology, Igneous, Geochemistry, Geochronology
Advocates: Jenna V. Adams; Valerie Strasser; Wendy A. Bohrson;
T19. Best Student Geologic Map Competi- Frank J. Spera
tion (Posters) Open-system magma processes rule! We seek contributions that
Endorsers: U.S. Geological Survey National Cooperative provide insight into the how, when, and where of these processes,
Geologic Mapping Program; Geological Society of America; as well as why the spatio-temporal records of open-system pro-
GSA Foundation; GSA Structural Geology and Tectonics Division cesses are distinct among magmatic systems.
Discipline: Structural Geology
Advocate: Michael Marketti T24. The Life and Times of Arc Volcanoes from
Students will present their research through geologic mapping Bottom to Top
projects that have a significant field component that addresses Endorsers: GSA Mineralogy, Geochemistry, Petrology, and
scientific or societal issues. The top three geologic maps will Volcanology Division; Geochemical Society
be awarded. Disciplines: Petrology, Igneous, Volcanology, Geophysics/
Geodynamics
T20. Structural Geology and Tectonics Division 40th Advocates: Anita Grunder; Thomas W. Sisson; Kellie T. Wall
Anniversary Symposium: Drivers of Orogenesis The diverse nature of arc volcanoes and intrusions invites
Endorsers: GSA Structural Geology and Tectonics Division; examination of the mantle fluxes, crustal feedbacks, magma ori-
GSA Geophysics and Geodynamics Division; GSA Mineralogy, gin and storage, structural controls, and geophysical and tectonic
Geochemistry, Petrology, and Volcanology Division; GSA contexts that lead to variability.
Quaternary Geology and Geomorphology Division
Discipline: Structural Geology PETROLOGY, METAMORPHIC
Advocates: Juliet Crider; Nancye Dawers; Eric Cowgill; J Ramón
Arrowsmith; Paul J. Umhoefer T25. Metamorphism into the 21st Century—
How do we conceptualize and evaluate the energy budgets of A Celebration of the Career of Mike Brown
orogenic events? Posters are encouraged to accompany three talks Endorsers: GSA Mineralogy, Geochemistry, Petrology, and
addressing this question and observational constraints from the Volcanology Division; Mineralogical Society of America;
lower crust to Earth’s surface. Geochemical Society

18 GSA Today | May 2021