T010
Geophysical Constraints on the Impacts of Fluids in Tectonic and Magmatic Processes in the Cascadia Subduction Zone
Session ID#: 249899
Session Description:
The Cascadia subduction zone of western North America displays along-strike variability in seismogenesis, deformation and magmatism, much of which can be linked to the distribution and release of fluids from the subducting Juan de Fuca slab and the tectonic evolution of the margin. In this session, we aim to gain insight into how geophysical constraints on the storage and migration of fluids along the US and/or Canadian Cascadia margin can be linked to subduction zone processes and arc variability. We seek contributions from geophysical disciplines including, but not limited to seismicity, seismic and magnetotelluric imaging, geodetic observations, and potential field studies.
Co-Sponsor(s):
Index Terms:
7230 Seismicity and tectonics [SEISMOLOGY]
8170 Subduction zone processes [TECTONOPHYSICS]
8180 Tomography [TECTONOPHYSICS]
8185 Volcanic arcs [TECTONOPHYSICS]
Primary Convener: Daniel Evan Portner, New Mexico Institute of Mining and Technology, Socorro, United States
Conveners: Jonathan R Delph, Purdue University, Earth, Atmospheric, and Planetary Sciences, West Lafayette, IN, United States, Shuoshuo Han, University of Texas at Austin, Institute for Geophysics, Austin, TX, United States and Michael G Bostock, University of British Columbia, Vancouver, BC, Canada
Role of Pore Fluid Pressure in Affecting Megathrust Slip Behaviour: Relevance to Cascadia (Invited) (1847782)
Kelin Wang1,2, Jiangheng He1 and Tianhaozhe Sun1,2, (1)Pacific Geoscience Centre, Geological Survey of Canada, Sidney, BC, Canada, (2)University of Victoria, School of Earth and Ocean Sciences, Victoria, BC, Canada
Can magnetotelluric observations along subduction zone margins detect alterations of the fluid interconnection network in the mantle wedge near the slab interface due to pre-, syn- and post seismic event changes in the stress field? (Invited) (1879453)
Adam Schultz, Oregon State University, College of Earth, Ocean and Atmospheric Sciences, Corvallis, OR, United States and Xiaolei Tu, Oregon State University, CEOAS, Corvallis, United States; IGG Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
The Seismic Structure of the Northern Cascadia Forearc from Ambient Noise Tomography and Radial Anisotropy. (1918633)
Manuela Hurtado1, Jonathan R Delph1, Bin He2 and Brandon Herr3, (1)Purdue University, Earth, Atmospheric, and Planetary Sciences, West Lafayette, IN, United States, (2)University of Oregon, Earth Sciences, Eugene, United States, (3)Rice University, Houston, TX, United States
Structure of the Cascadia Margin Offshore Central Oregon from Multi-Scale Active-Source Seismic Imaging (1973822)
Hanchao Jian, Woods Hole Oceanographic Institution, Department of Geology & Geophysics, Woods Hole, MA, United States, Juan Pablo Canales, Woods Hole Oceanographic Institution, Geology & Geophysics, Woods Hole, United States, Nathaniel C Miller, USGS, Coastal and Marine Science Center Woods Hole, Woods Hole, MA, United States, Shuoshuo Han, University of Texas at Austin, Institute for Geophysics, Austin, TX, United States, Brian Boston, Auburn University, Department of Geosciences, Auburn, AL, United States and Suzanne M Carbotte, Lamont-Doherty Earth Observatory, Palisades, NY, United States
Effect of Confining Pressure on Reaction-Induced Fracture in the Mantle Wedge Corner (1977682)
Jeremiah McElwee, University of Minnesota Twin Cities, Earth and Environmental Sciences, Minneapolis, MN, United States, Ikuko Wada, Department of Earth Sciences, Minneapolis, United States, Kazuki Yoshida, High Energy Accelerator Research Organization, Institute of Materials Structure Science, Tsukuba, Japan, Hiroyuki Shimizu, Kajima Corporation, Geotechnical Analysis Group, Tokyo, Japan and Atsushi Okamoto, Tohoku University, Graduate School of Environmental Studies, Sendai, Japan
