Wednesday, 22 October 2014: 8:00 AM-12:00 PM
Vancouver Convention Centre-West 306
Cordilleran Section of the Geological Association of Canada; GSA Geophysics Division; Geochemical Society; GSA Mineralogy, Geochemistry, Petrology, and Volcanology Division; GSA Structural Geology and Tectonics Division

 

S.M. DeBari, Patricia A. McCrory, A.J. Calvert and Nathalie Vigouroux, Advocates
Paper #
Start Time
280-280-1
8:00 AM
DYNAMICS OF THE PACIFIC NORTHWEST LITHOSPHERE AND ASTHENOSPHERE
HUMPHREYS, Eugene D., Geological Sciences, University of Oregon, Eugene, OR 97403, genehumphreys@gmail.com
280-280-2
8:20 AM
RELATIONSHIP OF SUBDUCTION RATE AND SLAB-PULL IN THE CIRCUM-PACIFIC REALM SINCE 80MA
ROWLEY, David B., Department of the Geophysical Sciences, The University of Chicago, 5734 S. Ellis Avenue, Chicago, IL 60637, rowley@geosci.uchicago.edu, FORTE, Alessandro M., Geotop, Département des Sciences de la Terre et Atmosphère, Université du Québec à Montréal, CP 8888, succursale Centre-Ville, Montreal, QC H3C 3P8, Canada, and GLISOVIC, Petar, Geotop, Département des Sciences de la Terre et de l'Atmosphère, Université du Québec à Montréal, CP 8888, succursale Centre-Ville, Montreal, QC H3C 3P8, Canada
280-3
 
PBO STRAINMETER OBSERVATIONS OF SLOW SLIP EVENTS IN THE CASCADIA SUBDUCTION ZONE:  ASSESSING THEIR IMPLICATIONS FOR TIME-­VARYING EARTHQUAKE PROBABILITY (Withdrawn)
280-280-4
8:50 AM
SEGMENTATION OF PLATE COUPLING, FATE OF SUBDUCTION FLUIDS, AND MODES OF ARC MAGMATISM IN CASCADIA, INFERRED FROM MAGNETOTELLURIC RESISTIVITY
WANNAMAKER, Philip E.1, EVANS, Rob L.2, BEDROSIAN, Paul A.3, UNSWORTH, Martyn4, MARIS, Virginie1, and MCGARY, R. Shane2, (1) Energy & Geoscience Institute, University of Utah, 423 Wakara Way, Suite 300, Salt Lake City, UT 84108, pewanna@egi.utah.edu, (2) Geology and Geophysics, Woods Hole Oceanographic Institution, Clark South 172, MS 24, Woods Hole, MA 02543, (3) US Geological Survey, Denver Federal Center, Bldg 20, MS 964, Denver, CO 80225, (4) Physics, University of Alberta, Edmonton, AB T6G 2J1, Canada
280-280-5
9:05 AM
TEMPERATURES AND THE ROLE OF WATER IN CASCADIA SUBDUCTION ZONE DEFORMATION AND MAGMATISM
PEACOCK, Simon M., Department of Earth, Ocean, and Atmospheric Sciences, University of British Columbia, 2178-2207 Main Mall, Vancouver, BC V6T1Z4 Canada, simon.peacock@ubc.ca
280-280-6
9:25 AM
HELIUM AS A TRACER FOR FLUIDS RELEASED FROM JUAN DE FUCA LITHOSPHERE BENEATH THE CASCADIA FOREARC
MCCRORY, Patricia A.1, CONSTANTZ, James E.2, HUNT, Andrew G.3, and BLAIR, J. Luke2, (1) U.S. Geological Survey, 345 Middlefield Road, MS 977, Menlo Park, CA 94025, pmccrory@usgs.gov, (2) U.S. Geological Survey, Menlo Park, CA 94025, (3) U.S. Geological Survey, Denver Federal Center, Bld 21, MS 963, Denver, CO 80225
 
9:40 AM
Discussion
 
9:55 AM
Break
280-280-7
10:10 AM
MELTING REGIMES AND SUB-ARC MANTLE DOMAINS IN CASCADIA AS SEEN THROUGH PRIMITIVE BASALT COMPOSITIONS
GRUNDER, Anita L., College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, CEOAS Admin 104, Corvallis OR, OR 97331, grundera@geo.oregonstate.edu and SCHMIDT, Mariek, Department of Earth Sciences, Brock University, 500 Glenridge Avenue, St. Catharines, ON L2S 3A1, Canada
280-280-8
10:30 AM
EXPLOSIVE FLARE-UP FOLLOWING THE LATE NEOGENE INITIATION OF THE CENTRAL OREGON HIGH CASCADE ARC
PITCHER, Bradley W., Ceoas, Oregon State University, 101 SW 26th St, Corvallis, OR 97333, pitcherb@onid.orst.edu, KENT, Adam J.R., College of Earth, Ocean & Atmospheric Sciences, Oregon State University, 104 Ocean Admin, Corvallis, OR 97331, and GRUNDER, Anita L., College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, CEOAS Admin 104, Corvallis OR, OR 97331
280-280-9
10:45 AM
NEW INSIGHTS ON CASCADE ARC MANTLE HETEROGENEITY FROM BASALT GEOCHEMISTRY
MULLEN, Emily K., WEIS, Dominique, MARSH, Nicole B., and MARTINDALE, Marina, 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, emullen@eos.ubc.ca
280-280-10
11:00 AM
HIGH PRECISION CHEMICAL AND ISOTOPIC CONSTRAINTS ON THE ORIGIN AND CRUSTAL PROCESSING OF NORTHERN CASCADE ARC LAVAS
MARTINDALE, Marina, MULLEN, Emily K., and WEIS, Dominique, 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, mmartindale@eos.ubc.ca
280-280-11
11:15 AM
ALONG-ARC GEOCHEMICAL VARIATIONS OF CASCADES MAFIC MAGMAS: A ROLE FOR SUBDUCTED SEDIMENT IN THE SOUTHERN ARC?
JOHNSON, Emily R., Department of Geological Sciences, New Mexico State University, PO Box 30001, MSC 3AB, Las Cruces, NM 88003, erj@nmsu.edu, WALOWSKI, Kristina, Department of Geological Sciences, University of Oregon Dept. of Geological Sciences, 1272 University of Oregon, Eugene, OR 97403, DEBARI, Susan M., Geology, Western Washington University, M.S. 9080, Bellingham, WA 98225, and BINDEMAN, Ilya N., Geological Sciences, 1272 University of Oregon, Eugene, OR 97403
280-280-12
11:30 AM
SMALL SCALE MANTLE HETEROGENEITIES OF THE CASCADE ARC RECORDED IN PRIMITIVE BASALTS OF THE POISON LAKE CHAIN IN THE LASSEN REGION OF THE SOUTHERN CASCADES
TEASDALE, Rachel, Geological & Environmental Sciences, CSU Chico, Chico, CA 95929-0205, rteasdale@csuchico.edu and WENNER, Jennifer M., Geology Department, Univ of Wisconsin Oshkosh, 800 Algoma Blvd, Oshkosh, WI 54901
 
11:45 AM
Discussion
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