V24C:
Yellowstone Volcanism from Its Current Expression to Early Vestiges of Hotspot Activity via Geophysical and Petrologic Studies I
V24C:
Yellowstone Volcanism from Its Current Expression to Early Vestiges of Hotspot Activity via Geophysical and Petrologic Studies I
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
Volcanology, Geochemistry and Petrology, and Tectonophysics
Cross-Listed:
- T - Tectonophysics
Index Terms:
3640 Igneous petrology [MINERALOGY AND PETROLOGY]
8137 Hotspots, large igneous provinces, and flood basalt volcanism [TECTONOPHYSICS]
8180 Tomography [TECTONOPHYSICS]
8415 Intra-plate processes [VOLCANOLOGY]
Abstracts Submitted to this Session:
See more of: Volcanology, Geochemistry and Petrology