V24C:
Yellowstone Volcanism from Its Current Expression to Early Vestiges of Hotspot Activity via Geophysical and Petrologic Studies I


Session ID#: 8574

Session Description:
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 volcanos.
Primary Convener:  Matthew Loewen, U.S. Geological Survey, Alaska Volcano Observatory, Anchorage, United States
Conveners:  Ilya Bindeman, University of Oregon, Department of Earth Sciences, Eugene, United States and Eugene Humphreys, Univ Oregon, Eugene, OR, United States
Chairs:  Matthew Loewen, U.S. Geological Survey, Alaska Volcano Observatory, Anchorage, United States, Ilya Bindeman, University of Oregon, Department of Earth Sciences, Eugene, OR, United States and Eugene Humphreys, University of Oregon, Eugene, OR, United States
OSPA Liaison:  Matthew Loewen, U.S. Geological Survey, Alaska Volcano Observatory, Anchorage, United States
Co-Organized with:
Volcanology, Geochemistry and Petrology, and Tectonophysics

Cross-Listed:
  • T - Tectonophysics
Index Terms:

Abstracts Submitted to this Session:

Ray E Wells, U.S. Geological Survey, Portland, OR, United States, David Bukry, USGS, Menlo Park, CA, United States, Richard M Friedman, University of British Columbia, Vancouver, BC, Canada, Douglas G Pyle, University of Hawaii at Manoa, School of Ocean and Earth Science and Technology, Honolulu, HI, United States, Robert A Duncan, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States and Peter J Haeussler, USGS Alaska Science Center, Anchorage, AK, United States
Eugene Humphreys, University of Oregon, Eugene, OR, United States and Amberlee Patrice Darold, Oklahoma Geological Survey, Leonard, OK, United States
Martin J Streck, Portland State University, Geology, Portland, OR, United States, Mark L Ferns, Eastern Oregon University, College of Arts and Sciences, La Grande, OR, United States and William C. McIntosh, New Mexico Institute Mining & Tech, Socorro, NM, United States
Thomas R Benson, Stanford University, Geological Sciences, Stanford, CA, United States and Gail Ann Mahood, Stanford University, Stanford, CA, United States
Eric H Christiansen, Brigham Young University, Geological Sciences, Provo, UT, United States, Ilya Bindeman, University of Oregon, Department of Earth Sciences, Eugene, OR, United States and John R Leishman, Brigham Young University, Provo, UT, United States
Matthew Loewen, U.S. Geological Survey, Alaska Volcano Observatory, Anchorage, United States, Ilya Bindeman, University of Oregon, Department of Earth Sciences, Eugene, OR, United States and Oleg E Melnik, Russian Academy of Sciences, IEPTMG, Moscow, Russia
Kenneth S Befus, Baylor University, Geosciences, Waco, TX, United States