2009 Portland GSA Annual Meeting (18-21 October 2009)

Session No. 273
Wednesday, 21 October 2009: 1:30 PM-5:30 PM
B110/111/112 (Oregon Convention Center)

T48. Living on the Edge: Deformation along the Cascadia Margin

GSA Structural Geology and Tectonics Division

 

Chris Goldfinger, Kelin Wang, Russell C. Evarts and Ray E. Wells, Advocates
Paper #
Start Time
1
1:30 PM
DEFORMATION OF THE CENTRAL CASCADIA ACCRETIONARY PRISM FROM A 2-YEAR ONSHORE/OFFSHORE SEISMIC ARRAY
TREHU, Anne M. and WILLIAMS, Mark C., College of Oceanic & Atmospheric Sciences, Oregon State Univ, 104 Ocean Administration Building, Corvallis, OR 97331, trehu@coas.oregonstate.edu, trehu@coas.oregonstate.edu
2
1:50 PM
DEFORMATION OF THE CASCADIA ACCRETIONARY PRISM DRIVEN BY MEGATHRUST EARTHQUAKES
WANG, Kelin, Geological Survey of Canada, Pacific Geoscience Centre, 9860 West Saanich Road, Sidney, BC V8L 4B2, Canada and HU, Yan, School of Earth and Ocean Sciences, University of Victoria, Victoria, BC V8W 2Y2, Canada, kwang@nrcan.gc.ca, kwang@nrcan.gc.ca
3
2:05 PM
PARTICLE DYNAMICS SIMULATIONS OF COHESIVE ACCRETIONARY PRISMS: APPLICATIONS TO CASCADIA
MORGAN, Julia K., Department of Earth Science, Rice University, MS-126, 6100 Main Street, Houston, TX 77005, morganj@rice.edu, morganj@rice.edu
4
2:20 PM
STRUCTURE OF THE CASCADIA ACCRETIONARY WEDGE OFFSHORE WASHINGTON
BOOTH-REA, Guillermo1, KLAESCHEN, Dirk2, GREVEMEYER, Ingo2 and RESTON, Timothy3, (1)Departamento de Geodinámica, Instituto Andaluz de Ciencias de la Tierra, CSIC-Universidad de Granada, Av. Fuentenueva s/n, Granada, 18002, Spain, (2)Dynamik des Ozeanbodens, IFM-GEOMAR, Leibnitz Institute of Marine Sciences, Wischhofstrasse 1-3, Kiel, D-20148, Germany, (3)School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, B152TT, United Kingdom, gbooth@ugr.es, gbooth@ugr.es
5
2:40 PM
STRUCTURAL INFLUENCES ON CASCADIA RUPTURE PATCHES AND WIDTH
GOLDFINGER, Chris1, PRIEST, George R.2, WANG, Kelin3, ZHANG, Yinglong4, WITTER, Robert C.5 and BAPTISTA, António M.4, (1)Coas, Oregon State University, Ocean Admin Bldg 104, Corvallis, OR 97331, (2)N/a, Oregon Department of Geology and Mineral Industries, Newport Coastal Field Office, PO Box 1033, Newport, OR 97365, (3)Geological Survey of Canada, Pacific Geoscience Centre, 9860 West Saanich Road, Sidney, BC V8L 4B2, Canada, (4)OGI School of Science and Engineering, Oregon Health & Science University, Portland, OR 97291 1000, (5)Newport Coastal Field Office, Oregon Department of Geology and Mineral Industry, P.O. Box 1033, Newport, OR 97365, gold@coas.oregonstate.edu, gold@coas.oregonstate.edu
6
2:55 PM
FAULT DEFORMATION MODELS FOR GENERATION OF TSUNAMIS FROM THE CASCADIA SUBDUCTION ZONE: IMPLICATIONS FOR SEISMIC AND TSUNAMI HAZARDS ON THE WASHINGTON AND NORTHERN OREGON COAST
PRIEST, George R.1, WANG, Kelin2, GOLDFINGER, Chris3, ZHANG, Yinglong4, WITTER, Rob5 and BAPTISTA, António M.4, (1)N/a, Oregon Department of Geology and Mineral Industries, Newport Coastal Field Office, PO Box 1033, Newport, OR 97365, (2)Geological Survey of Canada, Pacific Geoscience Centre, 9860 West Saanich Road, Sidney, BC V8L 4B2, Canada, (3)COAS, Oregon State University, Corvallis, OR 97331, (4)OGI School of Science and Engineering, Oregon Health & Science University, Portland, OR 97291 1000, (5)Coastal Field Office, Oregon Department of Geology, P.O. Box 1033, Newport, OR 97365, george.priest@dogami.state.or.us, george.priest@dogami.state.or.us
 
3:10 PM
Break
7
3:25 PM
UPLIFT ASSOCIATED WITH SLOW SLIP EVENTS ON THE CASCADIA SUBDUCTION ZONE RESOLVED IN TIDAL RECORDS
WELDON, Ray J., Department of Geological Sciences, University of Oregon, 1272 University of Oregon, Eugene, OR 97403, LIVELYBROOKS, Dean, Department of Physics, University of Oregon, 1371 E 13th Avenue, Eugene, OR 97403 and SCHMIDT, David, Department of Geological Sciences, University of Oregon, 1272 University of Oregon, Eugene, OR 97403-1272, ray@uoregon.edu, ray@uoregon.edu
8
3:45 PM
CURRENT TECTONICS AND DEFORMATION IN NORTHERN VANCOUVER ISLAND, SOUTHERN QUEEN CHARLOTTE ISLANDS, AND THE ADJACENT MAINLAND
HIPPCHEN, Sabine, School of Earth and Ocean Sciences, University of Victoria, Victoria, BC V8P5C2, Canada, MAZZOTTI, Stephane, Pacific Geoscience Centre, Geological Survey of Canada, Sidney, BC V8L 4B2, Canada and HYNDMAN, Roy D., Pacific Geoscience Centre, Geological Survey of Canada, 9860 W. Saanich, Sidney, BC V8L 4B2, Canada, hippchen@uvic.ca, hippchen@uvic.ca
9
4:15 PM
Withdrawn
10
4:00 PM
THE GALES CREEK FAULT ACCOMMODATES LARGE DEXTRAL OFFSET IN THE OREGON FOREARC
WELLS, Ray E., U.S. Geological Survey, 345 Middlefield Rd, MS 973, Menlo Park, CA 94025, BLAKELY, Richard J., US Geological Survey, 345 Middlefield Rd, MS 989, Menlo Park, CA 94025, MCPHEE, Darcy K., U.S. Geol Survey, 345 Middlefield Road, Menlo Park, CA 94025 and LANGENHEIM, Victoria, U. S. Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025, rwells@usgs.gov, rwells@usgs.gov
11
4:30 PM
UPDATE OF THE PACIFIC NORTHWEST GPS VELOCITY FIELD: A KEY TO THE ACTIVE TECTONICS OF CASCADIA
KING, Robert W., Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, MCCAFFREY, Robert, Earth & Environmental Sciences, Rensselaer Polytechnic Institute, Troy, NY 12180, PAYNE, Suzette J., Structural and Seismic Analysis, Idaho National Laboratory, P.O. Box 1625, Idaho Falls, ID 83415-2203 and QAMAR, Tony, University of Washington, Seattle, 98195, rwk@chandler.mit.edu, rwk@chandler.mit.edu
 
4:50 PM
Discussion- what controls along-strike variations in seismogenic behavior at Cascadia?
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