GSA Annual Meeting in Seattle, Washington, USA - 2017

Session No. 294
Tuesday, 24 October 2017: 9:00 AM-6:30 PM
Halls 4EF (Washington State Convention Center)

T231. Subduction Top to Bottom 2 (ST2B-2), Cascadia and Beyond (Posters)

GSA Structural Geology and Tectonics Division; Future of Tectonics Initiative
Authors will be present from 9:30 to 11:30 AM and 4:30 to 6:30 PM.
519
TRACING CONTRIBUTIONS TO CASCADE MAGMATISM WITH THALLIUM ISOTOPES
O'CONNOR, Adam Rhys1, PRYTULAK, Julie2, WEIS, Dominique1 and MARTINDALE, Marina1, (1)Earth, Ocean and Atmospheric Sciences, University of British Columbia, Pacific Centre for Isotopic and Geochemical Research, 2020-2207 Main Mall, Vancouver, BC V6T 1Z4, Canada, (2)Department of Earth Science & Engineering, Imperial College London, London, SW7 2AZ, United Kingdom, adam.rhys.oconnor@gmail.com
520
SEISMIC STRUCTURE OF TANAGA ISLAND, ALASKA
LALLY, Kevin Francis, Department of Geology, Western Washington University, 516 High street, Bellingham, WA 98225, lallyk@wwu.edu
521
SCIENTIFIC OCEANIC DRILLING (IODP) TO TEST CONTRASTING HYPOTHESES FOR THE ORIGIN OF THE ALEUTIAN SUBDUCTION ZONE, ALEUTIAN ARC, AND BACKARC ALEUTIAN BASIN
SCHOLL, David W.1, STERN, Robert J.2, BARTH, Ginger A.3, SCHEIRER, Daniel S.3, MALKOWSKI, Matthew A.4 and BARRON, John A.5, (1)U. S. Geological Survey, retired emeritus, 345 Middlefield Rd, MS 999, Menlo Park, CA 94025, (2)Geosciences, Univ Texas - Dallas Dept Geosciences- MS ROC-21, PO Box 830688, Richardson, TX 75083-0688, (3)U.S. Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025, (4)U.S. Geological Survey, Santa Cruz, CA 95060, (5)U.S. Geological Survey, 345 Middlefield Road, MS 910, Menlo Park, CA 94025, dscholl1934@gmail.com
522
SHEAR WAVE SPLITTING OBSERVATIONS BENEATH MOUNT ST. HELENS VOLCANO, WASHINGTON
WALLACE, Abraham W.1, WIRTH, Erin2, EAKIN, Caroline3, ULBERG, Carl2, CREAGER, Kenneth C.2 and ABERS, Geoff4, (1)University of Oklahoma, Conoco Phillips School of Geology and Geophysics, 100 Boyd St, Norman, OK 73069, (2)Earth & Space Sciences, University of Washington, Seattle, WA 98105, (3)Australian National University, Research School of Earth Sciences, Canberra, 0200, Australia, (4)Earth and Atmospheric Sciences, Cornell University, 2122 Snee Hall, Ithaca, NY 14850, abraham.w.wallace-1@ou.edu
523
EVALUATING SUBDUCTION COMPONENT CONTRIBUTIONS TO THE SOUTHERN CASCADE ARC: INSIGHTS FROM GEOCHEMICAL ANALYSES OF MONOGENETIC VOLCANO MAFIC LAVAS AND GORDA PLATE SEDIMENTS
SHAFFER, Jamie, Department of Geological Sciences, New Mexico State University, Dept. Geological Sciences/MSC 3AB New Mexico State University, P.O. Box 30001, Las Cruces, NM 88003; Department of Geological Sciences, New Mexico State University, PO Box 30001, MSC 3AB, Las Cruces, NM 88003, JOHNSON, Emily R., Department of Geological Sciences, New Mexico State University, PO Box 30001, MSC 3AB, Las Cruces, NM 88003, RAMOS, Frank C., Geological Sciences, New Mexico State University, Las Cruces, NM 88003; Department of Geological Sciences, New Mexico State University, PO Box 30001, MSC 3AB, Las Cruces, NM 88003, BINDEMAN, Ilya N., Earth Sciences, University of Oregon, Eugene, OR 97403 and COLE, Meredith, Department of Geosciences, New Mexico State University, Dept. Geological Sciences/MSC 3AB New Mexico State University, P.O. Box 30001, Las Cruces, NM 88003, jshaffe@nmsu.edu
524
1997 KRONOTSKY EARTHQUAKE AND TSUNAMI AND THEIR PREDECESSORS,  KAMCHATKA, RUSSIA--LOCATIONS AND SEGMENTATION(S)
BOURGEOIS, Joanne, Earth & Space Sciences, University of Washington, Seattle, WA 98195-1310 and PINEGINA, Tatiana, Russian Academy of Sciences, Institute of Volcanology and Seismology, Petropavlovsk-Kamchatsky, Russian Federation, jbourgeo@uw.edu
525
PREDICTIVE MODELING OF MAGNESIUM ISOTOPIC VARIATION IN ARC LAVAS WITH HYDRATION STATE OF SUB-ARC MANTLE SOURCES
HU, Yan1, TENG, Fang-Zhen1 and IONOV, Dmitri A.2, (1)Department of Earth and Space Sciences, University of Washington, Seattle, WA 98195, (2)Géoscience Montpellier, Université de Montpellier 2 & UMR-CNRS 5243, Montpellier, 34095, France, yanhu@uw.edu
526
LONG-TERM HYDROACOUSTIC AND VIDEO INVESTIGATIONS OF SUBMARINE VOLCANIC ERUPTION DYNAMICS AT NW ROTA-1 AND WEST MATA
CRANSTON, Adriana J., Western Washington University, Department of Geology, 516 High St, Bellingham, WA 98225, CAPLAN-AUERBACH, Jackie, Geology, Western Washington University, 516 High Street, Bellingham, WA 98225-9080, CHADWICK Jr., William W., Oregon State University and NOAA/PMEL, Hatfield Marine Science Center, 2115 SE OSU Drive, Newport, OR 97365, DZIAK, Robert P., Pacific Marine Environmental Labratory, NOAA, 2115 S.E. OSU Dr., Newport, OR 97365 and EMBLEY, Robert W., Geology and Geophysics, University of Hawaii, 1680 East West Road, Honolulu, HI 96822, cransta@wwu.edu
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