2009 Portland GSA Annual Meeting (18-21 October 2009)
Session No. 224 Wednesday, 21 October 2009
8:00 AM-12:00 PM, Oregon Convention Center: Portland Ballroom 254

P5. Geodynamics from the Cascadia Margin to the High Lava Plains (GSA Geophysics Division; GSA Structural Geology and Tectonics Division)

Anita L. Grunder, G. Randy Keller, Rick W. Carlson, Michael Brudzinski, Bernie Housen and Basil Tikoff, Presiding
 Paper #Start Time
224-18:00 AM CENOZOIC BASALTIC VOLCANISM IN THE PACIFIC NORTHWEST: CARLSON, Richard, Department of Terrestrial Magnetism, Carnegie Institution of Washington, 5241 Broad Branch Road, NW, Washington, DC 20015, rcarlson@ciw.edu, HART, William K., Geology, Miami University, 114 Shideler Hall, Oxford, OH 45056, and GROVE, Tim, Earth, Atmospheric, and Planetary Sciences, MIT, Building & Room: 54-1220a, Cambridge, MA 02139
224-28:20 AM MID-MIOCENE EMPLACEMENT OF THE YELLOWSTONE MANTLE PLUME IN THE CASCADIA BACK-ARC REGION: CAMP, Victor E., Geological Sciences, San Diego State Univ, 5500 Campanile Dr, San Diego, CA 92182-1020, vcamp@geology.sdsu.edu
224-38:40 AM VARIABLE MANTLE AND CRUSTAL INFLUENCES ON MAGMATISM IN THE CASCADE ARC: DEBARI, S.M., MOORE, N.E., and BAGGERMAN, T., Geology Department, Western Washington University, M.S. 9080, Bellingham, WA 98225, debari@geol.wwu.edu
224-49:00 AM SHALLOW, HOT, MANTLE MELTING IN THE HIGH LAVA PLAINS, OREGON: GROVE, Tim1, BARR, Jay2, TILL, Christy2, DONNELLY-NOLAN, Julie M.3, and CARLSON, Richard4, (1) Earth, Atmospheric, and Planetary Sciences, MIT, Building & Room: 54-1220a, Cambridge, MA 02139, tlgrove@mit.edu, (2) Earth, Atmospheric and Planetary Sciences, Mass. Inst. of Tech, Cambridge, 02139, (3) U.S. Geological Survey, 345 Middlefield Road, MS 910, Menlo Park, CA 94025, (4) Department of Terrestrial Magnetism, Carnegie Institution of Washington, 5241 Broad Branch Road, NW, Washington, DC 20015
224-59:20 AM ISOTOPIC COMPOSITIONAL CHANGES ACROSS SPACE, TIME, AND BULK ROCK COMPOSITION IN THE HIGH LAVA PLAINS AND NORTHWESTERN BASIN AND RANGE, OREGON: FORD, Mark T.1, CARLSON, Richard2, and GRUNDER, Anita L.1, (1) Department of Geosciences, Oregon State University, 104 Wilkinson Hall, Corvallis, OR 97331, fordm@geo.oregonstate.edu, (2) Department of Terrestrial Magnetism, Carnegie Institution of Washington, 5241 Broad Branch Road, NW, Washington, DC 20015
224-69:40 AM FATE OF WATER IN THE CASCADIA FOREARC UNVEILED BY TELESEISMIC IMAGING: BOSTOCK, Michael G.1, AUDET, Pascal2, CHRISTENSEN, Nikolas I.3, HYNDMAN, Roy D.4, PEACOCK, Simon M.1, and RONDENAY, Stephane5, (1) Department of Earth and Ocean Sciences, The University of British Columbia, 6339 Stores Rd, Vancouver, BC V6T1Z4, Canada, bostock@eos.ubc.ca, (2) Seismological Laboratory, University of California Berkeley, 377 McCone Hall, Berkeley, CA 94720-4767, (3) Dept. Geology and Geophysics, University of Wisconsin-Madison, Madison, WI 53706, (4) Pacific Geoscience Centre, Geological Survey of Canada, Sidney, BC V8L 4B2, Canada, (5) Department of Earth, Atmospheric & Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, 54-618, Cambridge, MA 02139
224-710:00 AM SEISMIC IMAGING OF THE PACIFIC NORTHWESTERN UNITED STATES: FOUCH, Matthew J., School of Earth and Space Exploration, Arizona State University, PO Box 871404, Tempe, AZ 85287, fouch@asu.edu, JAMES, David E., Dept. of Terrestrial Magnetism, Carnegie Institution of Washington, 5241 Broad Branch Road, NW, Washington, DC 20015, LONG, Maureen D., Department of Geology and Geophysics, Yale University, New Haven, CT 06520, EAGAR, Kevin C., School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, WAGNER, Lara S., Department of Geological Sciences, University of North Carolina - Chapel Hill, Chapel Hill, NC 27599, and ROTH, Jeffrey B., ExxonMobil Exploration Company, 223 Benmar Dr, Houston, TX 77060
224-810:20 AM EPISODIC TREMOR AND SLIP COMPARED WITH SEISMICITY AND SUBDUCTION ZONE STRUCTURE: INTEGRATING THE NEW KID INTO THE EXISTING FRAMEWORK: BRUDZINSKI, Michael1, BOYARKO, Devin1, HOLTKAMP, Stephen1, SIT, Stefany1, ALLEN, Richard2, AUDET, Pascal2, and PORRITT, Robert2, (1) Geology Department, Miami University, 114 Shideler Hall, Oxford, OH 45056, brudzimr@muohio.edu, (2) Seismological Laboratory, University of California Berkeley, 377 McCone Hall, Berkeley, CA 94720-4767
224-910:40 AM CRUSTAL STRUCTURE IN THE HIGH LAVA PLAINS REGION FROM INTEGRATED GEOPHYSICAL STUDIES: KELLER, G. Randy1, COX, Catherine M.1, OKURE, Maxwell S.1, HARDER, Steven2, and HOLLOWAY, Stephen3, (1) School of Geology and Geophysics, University of Oklahoma, Norman, OK 73019, grkeller@ou.edu, (2) Department of Geological Sciences, University of Texas at El Paso, El Paso, TX 79968, (3) School of Geology and Geophysics, University of Oklahoma, 100 E. Boyd St, Sarkeys Energy Center Suite 710, Norman, OK 73019
224-1011:00 AM VOLCANIC AND STRUCTURAL SETTING OF THE HIGH LAVA PLAINS, AN INTRACONTINENTAL TRANSFORM ZONE IN THE NORTHWESTERN USA: GRUNDER, Anita L., Geosciences, Oregon State University, Corvallis, OR 97331, grundera@geo.oregonstate.edu and MEIGS, Andrew, Geosciences, Oregon State University, Corvallis, 97331
224-1111:20 AM TWO-STAGE OPENING OF THE NORTHWESTERN BASIN AND RANGE IN EASTERN OREGON: MILLIARD, Justin B., Geoscience, Oregon State University, 104 Wilkinson Hall, Corvallis, OR 97331, milliarj@geo.oregonstate.edu, MEIGS, Andrew, Geosciences, Oregon State University, Corvallis, 97331, and GRUNDER, Anita L., Geosciences, Oregon State University, Corvallis, OR 97331
224-1211:40 AM NEOGENE MAGMATISM AND BLOCK MOTIONS IN THE PACIFIC NORTHWEST: WELLS, Ray E., U.S. Geological Survey, 345 Middlefield Rd, MS 973, Menlo Park, CA 94025, rwells@usgs.gov and MCCAFFREY, Robert, Earth & Environmental Sciences, Rensselaer Polytechnic Institute, Troy, NY 12180

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