T232 The Life and Times of Arc Volcanoes from Bottom to Top II

Wednesday, 13 October 2021
1:30 PM - 5:30 PM
A106

Presentations

• 1:35 PM
  ERUPTIVE HISTORY AND MAGMATIC EVOLUTION PROCESSES OF LONG-LIVED AKUTAN VOLCANO, EASTERN ALEUTIAN ISLANDS
  Michelle Coombs, Alaska Volcano Observatory, Anchorage, AK and Brian Jicha, Dept of Geoscience, Madison, WI
  367167 (Technical Sessions)
• 1:50 PM
  COMPOSITIONAL PROGRESSION FROM BASALT-ONLY TO BASALT+ANDESITE+DACITE DURING THE 300 KA ERUPTIVE HISTORY OF MT. VENIAMINOF, ALASKA
  Andrew Calvert, Volcano Science Center, Menlo Park, CA and Charles Bacon, Volcano Science Center, Menlo Park, CA and Thomas (Tom) Sisson, Volcano Science Center, Menlo Park, CA
  368248 (Technical Sessions)
• 2:10 PM
  MOBILE, “DRY” DACITES BY SHALLOW, GABBROIC DIFFERENTIATION OF ARC BASALTS AT MOUNT VENIAMINOF VOLCANO, ALASKA PENINSULA
  Thomas (Tom) Sisson, Volcano Science Center, Menlo Park, CA and Charles Bacon, Volcano Science Center, Menlo Park, CA and Andrew Calvert, Volcano Science Center, Menlo Park, CA and Vincent Salters, Florida State Univ., Tallahassee, FL
  369224 (Technical Sessions)
• 2:40 PM
  DOES THE ARRIVAL OF RECHARGE MAGMA CONTROL THE TIMING OF VOLCANIC ERUPTIONS? EVIDENCE FOR POST-RECHARGE COOLING IN MINERAL THERMAL PROFILES FROM BROKEOFF VOLCANO, LASSEN VOLCANIC CENTER, CALIFORNIA
  Bryant Platt, Geoscience and Environmental Change Science Center, Denver, CO and Keith Putirka, California State University - Fresno, Fresno, CA
  370006 (Technical Sessions)
• 2:55 PM
  CONDITIONS THAT GIVE RISE TO EFFICIENT SEGREGATION AND ERUPTION OF RHYOLITE-OBSIDIANS IN THE CASCADES: A PETROLOGIC STUDY OF RHYOLITES FROM MEDICINE LAKE, SOUTH SISTER, AND LASSEN
  Laura Waters, New Mexico Institute of Mining and Technology, Socorro, NM
  369488 (Technical Sessions)
• 3:15 PM
  COMPARATIVE GEOCHEMICAL ANALYSIS OF RECENT VOLCANIC FLOWS ON BARVA VOLCANO, COSTA RICA
  Julie Coulombe, University of Tennessee, Knoxville, TN and Molly McCanta, University of Tennessee, Knoxville, TN
  369301 (Technical Sessions)
• 3:40 PM
  THE VOLCANIC EXPLOSIVE-EFFUSIVE TRANSITION: INSIGHTS FROM A CRYSTALLINITY-BASED PERMEABILITY MODEL
  Thomas Herbst, University of Missouri, Columbia, MO and Alan Whittington, University of Texas at San Antonio, San Antonio, TX and Mattia Pistone, University of Georgia, Athens, GA and James Schiffbauer, University of Missouri, Columbia, MO and Tara Selly, University of Missouri, Columbia, MO
  370759 (Technical Sessions)
• 3:55 PM
  INVESTIGATING THE EVOLUTION OF MAGMA PROPERTIES DURING DIKE PROPAGATION AT SUMMER COON VOLCANO, CO
  Gui Aksit, University of Oregon, Eugene, OR and Meredith Townsend, University of Oregon, Eugene, OR and Andrew Harp, California State University, Chico, Chico, CA
  367009 (Technical Sessions)
• 4:10 PM
  OBJECTIVE LINKING OF DIKE SEGMENTS TO EVALUATE MESOSCALE STRUCTURE OF DIKE SWARMS
  Allison Kubo Hutchison, University of Oregon, Eugene, OR and Allison Kubo Hutchison, Department of Earth Sciences, Eugene, OR and Leif Karlstrom, University of Oregon, Eugene, OR and Tushar Mittal, Porecast Research LLC, Lawrence, KS and Chris Harper, University of Oregon, Eugene, OR
  369808 (Technical Sessions)
• 4:25 PM
  AN EMPLACMENT MODEL FOR LOW-VOLUME INTRUSIONS BASED ON THE SHONKIN SAG LACCOLITH, MONTANA
  Claire Ruggles, University of Wisconsin - Madison, Madison, WI and Sven Morgan, University of Michigan-Dearborn, Dearborn, MI and Jacqueline Reber, Iowa State University, Ames, IA
  371077 (Technical Sessions)
• 4:40 PM
  TRACING DEHYDRATION OF THE SUBDUCTED SLAB WITH TUNGSTEN ISOTOPES IN ARC LAVAS
  Sarah Mazza, Smith College, Northampton, MA and Andreas Stracke, University of Münster, Münster and James B. Gill, University of California Santa Cruz, Santa Cruz, CA and Thorsten Kleine, University of Münster, Münster
  370747 (Technical Sessions)
• 4:55 PM
  CARBON and OXYGEN ISOTOPE COMPOSITION OF MANTLE CARBONATES FROM THE NAVAJO VOLCANIC FIELD (COLORADO PLATEAU, USA)
  Meghan Guild, University of Texas at Austin, Austin, TX and Jaime Barnes, University of Texas at Austin, Austin, TX
  367918 (Technical Sessions)
• 5:10 PM
  INTEGRATING PETROLOGIC AND GEOPHYSICAL PERSPECTIVES ON THE RHYOLITIC MAGMA RESERVOIR AT LAGUNA DEL MAULE, CHILE
  Nathan Andersen, Cascades Volcano Observatory, VANCOUVER, WA
  367555 (Technical Sessions)