GSA Connects 2021 in Portland, Oregon

Session No. 36
Sunday, 10 October 2021: 1:30 PM-5:30 PM
A107–A109 (Oregon Convention Center)

T11. Recent to Long-Term Slip Histories of Active Faults and Folds in Cascadia

GSA Structural Geology and Tectonics Division; GSA Structural Geology and Tectonics Division; GSA Geophysics and Geodynamics Division; GSA Quaternary Geology and Geomorphology Division; GSA Geoinformatics and Data Science Division

 

Scott Bennett, Elizabeth Schermer and Andrew Meigs, Advocates
Paper #
Start Time
 
1:30 PM
Introductory Remarks
1:35 PM
50 MILLION YEARS OF FAULT SLIP IN THE CASCADIA FOREARC (Invited Presentation)
WELLS, Ray, U.S. Geological Survey, 2130 SW 5th Ave, Portland, OR 97201, VENERA, Zdenek, Czech Geological Survey, Klárov 3,118, 21 Prague 1, Prague, Czech Republic and BENNETT, Scott, U.S. Geological Survey, Geology, Minerals, Energy, and Geophysics Science Center, 2130 SW Fifth Ave., Portland, OR 97201
1:55 PM
LINKAGE BETWEEN UPPER-PLATE CASCADIA FAULTING AND THE EVOLUTION OF THE NORTHERN SAN ANDREAS PLATE BOUNDARY FAULT SYSTEM
FURLONG, Kevin, Department of Geosciences, Pennsylvania State University, MCKENZIE, Kirsty, Department of Geosciences, Pennsylvania State University, University Park, PA 16802-2713, VILLASENOR, Antonio, Institue of Marine Sciences (ICM-CSIC), Pg. Maritim de la Barceloneta 37-49, Barcelona, E-08003, Spain and BENZ, Harley, United States Geological Survey, National Earthquake Information Center, Golden, CO 80401
2:10 PM
TECTONIC TERRACES AT THE TRIPLE JUNCTION
PATTON, Jay, California Geological Survey, Seismic Hazards, Tsunami Unit, 380 Beach Dr, arcata, CA 95521
Handouts
  • patton_2021_GSA_terraces_final_online.pptx (38.1 MB)
  • 2:25 PM
    EVALUATION OF THE SLIP HISTORY AND HOLOCENE ACTIVITY OF FAULTS IN THE STRAWBERRY MOUNTAINS, GRANT COUNTY, OREGON
    DUNNING, Andrew1, STREIG, Ashley R.1, MADIN, Ian2, AMIDON, Will3, STRECK, Martin1, BALCO, Greg4, MCCLEAN, Kyra H.5, HEDRICK, Kate1 and SCOTT, William6, (1)Department of Geology, Portland State University, 1721 SW Broadway Ave, Portland, OR 97201, (2)Oregon Department of Geology and Mineral Industries, 800 NE Oregon St, Suite 965, Portland, OR 97232, (3)Geology Dept.Geology Dept., 276 Bicentennial Way, Middlebury, VT 05753, (4)Berkeley Geochronology Center, 2455 Ridge Road, Berkeley, CA 94709, (5)Department of Geology, Middlebury College, 276 Bicentennial Way, Middlebury, VT 05753, (6)United States Geological Survey, Vancouver, WA 98683
    2:40 PM
    MAGMATICALLY DRIVEN FLEXURAL UPLIFT OF THE CENTRAL CASCADES ARC, USA, ENCODED BY FLUVIAL INCISION OF THE COLUMBIA RIVER GORGE
    KLEMA, Nathaniel, Earth Sciences, 1272 University of Oregon, Eugene, OR 97403, KARLSTROM, Leif, Department of Earth Sciences, University of Oregon, 100 Cascade Hall, 1272 University of Oregon, Eugene, OR 97403, CANNON, Charles M., United States Geological Survey, Vancouver, WA 98683, O'CONNOR, Jim, U.S. Geological Survey, 2130 SW 5th Ave, Portland, OR 97201-4908 and WELLS, Ray, U.S. Geological Survey, 2130 SW 5th Ave, Portland, OR 97201
    2:55 PM
    NEW LIDAR AND PALEOSEISMOLOGIC DISCOVERIES OF HOLOCENE-ACTIVE FAULTS IN THE HIGH CASCADES GRABEN, OREGON
    MADIN, Ian, Oregon Department of Geology and Mineral Industries, 800 NE Oregon St, Suite 965, Portland, OR 97232, BENNETT, Scott, U.S. Geological Survey, 2130 SW 5th Ave, Portland, OR 97201 and STREIG, Ashley R., Department of Geology, Portland State University, 1721 SW Broadway Ave, Portland, OR 97201
    3:10 PM
    THE MOST RECENT EARTHQUAKE ON THE MOUNT HOOD FAULT ZONE, NORTH-CENTRAL OREGON: IMPLICATIONS FOR CASCADING EARTHQUAKE, LANDSLIDE, AND FLOOD MULTI-HAZARDS IN THE COLUMBIA RIVER GORGE
    BENNETT, Scott1, STREIG, Ashley R.2, LEVINSON, Ryan2, ROBERTS, Nick2, DUNNING, Andrew2, WELLS, Ray1, MADIN, Ian3, O'CONNOR, Jim E.1, REYNOLDS, Nathaniel D.4, PRINGLE, Patrick5 and GRANT, Alex6, (1)U.S. Geological Survey, 2130 SW Fifth Avenue, Portland, OR 97201, (2)Department of Geology, Portland State University, 1721 SW Broadway Ave, Portland, OR 97201, (3)Oregon Department of Geology and Mineral Industries, 800 NE Oregon St, Suite 965, Portland, OR 97232, (4)Cowlitz Indian Tribe (Ret.), Vancouver, WA 98665, (5)Science Dept., Centralia College, 600 Centralia College Blvd, Centralia, WA 98531, (6)U.S. Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025
     
    3:25 PM
    Break
    3:35 PM
    THE DOTY FAULT ZONE: CENTERPIECE OF A LONG-LIVED, SLOW-MOVING, TRANSPRESSIVE FAULT SYSTEM IN SOUTHWESTERN WASHINGTON (Invited Presentation)
    ANDERSON, Megan1, STEELY, Alexander N.1, HORST, Alison2, VON DASSOW, Wesley1, LAU, Todd1, REEDY, Tabor1, AMARAL, Chelsea1 and STANTON, Kelsay3, (1)Washington Department of Natural Resources, Washington Geological Survey, 1111 Washington St SE, Olympia, WA 98504-7007, (2)Geotechnical Resources, Inc., 9750 SW Nimbus Ave, Beaverton, OR 97008, (3)Earth and Space Sciences, University of Washington, Seattle, WA 98195
    3:55 PM
    THE ACTIVE WARWICK STRIKE-SLIP FAULT AND THE COLUMBIA HILLS THRUST FAULT OF THE YAKIMA FOLD AND THRUST BELT ACCOMMODATE VERTICAL-AXIS ROTATION IN THE CASCADIA BACKARC
    WOODRING, Danielle1, MEIGS, Andrew1, O'CONNOR, Jim E.2, CANNON, Charles2, MAHAN, Shannon3, WELLS, Ray2, BENNETT, Scott2 and STELTEN, Mark E.4, (1)College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, 104 CEOAS Admin. Bldg., Corvallis, OR 97331, (2)U.S. Geological Survey, 2130 SW Fifth Avenue, Portland, OR 97201, (3)U.S. Geological Survey, Box 25046 Federal Center, Denver, CO 80225, (4)USGS, California Volcano Observatory, 345 Middlefield Road, Menlo Park, CA 94025-0000
    36-10
    4:10 PM
    Withdrawn
    4:25 PM
    PRELIMINARY AND VIRTUAL ASSESSMENT OF THE NEOTECTONICS OF THE EASTERN YAKIMA FOLD BELT AND QUINCY BASIN SCABLANDS GEOMORPHIC FEATURES, WASHINGTON
    EWETUYA, Daniel1, MACHADO, Aldair J.1, ZERMENO, Veronica2 and SIMAO, Vilma3, (1)Department of Earth and Atmospheric Sciences, University of Houston, Houston, TX 77004, (2)Department of Earth and Atmospheric Sciences, University of Houston, 4800 Calhoun Rd, Houston, TX 77004, (3)Department of Geosciences, University of Arizona, Tuscon, AZ 85721
    4:40 PM
    EOCENE TO QUATERNARY SLIP ALONG THE ENTIAT FAULT, NORTH CASCADES, WA
    SCHERMER, Elizabeth, WELDON, Nyle and AMOS, Colin, Geology Department, Western Washington University, 516 High St, Bellingham, WA 98225
    4:55 PM
    GEOMORPHIC MAPPING AND PALEOSEISMIC TRENCHING REVEAL MULTIPLE LATEST PLEISTOCENE TO HOLOCENE EARTHQUAKES ON THE RIGHT-LATERAL OBLIQUE BEAUFORT RANGE FAULT, NORTHERN CASCADIA FOREARC, BRITISH COLUMBIA, CANADA
    LYNCH, Emerson1, REGALLA, Christine1, MORELL, Kristin2, BENNETT, Scott3, LEONARD, Lucinda J.4, HARRICHHAUSEN, Nicolas2 and NISSEN, Edwin4, (1)School of Earth and Sustainability, Northern Arizona University, Flagsatff, AZ 86011, (2)University of California Santa Barbara, 1006 Webb Hall, Santa Barbara, CA 93106-0001, (3)Geology, Minerals, Energy, and Geophysics Science Center, U.S. Geological Survey, Portland, OR 97201, (4)School of Earth and Ocean Sciences, University of Victoria, Bob Wright Centre, Victoria, BC V8W 2Y2, Canada
    5:10 PM
    FOREARC FAULTING IN NORTHERN CASCADIA: WHERE, WHEN, AND WHY? (Invited Presentation)
    REGALLA, Christine1, MORELL, Kristin2, HARRICHHAUSEN, Nicolas3, LYNCH, Emerson4, LEONARD, Lucinda J.5, BENNETT, Scott6, NISSEN, Edwin5 and FINLEY, Theron5, (1)School of Earth and Sustainability, Northern Arizona University, Flagsatff, AZ 86011, (2)University of California Santa Barbara, 1006 Webb Hall, Santa Barbara, CA 93106-0001, (3)University of California Santa BarbaraUnit A, 945 Camino Pescadero Unit A, Goleta, CA 93117-5017, (4)Northern Arizona UniversitySchool of Earth & Sustainability, 624 S Knoles Dr, Flagstaff, AZ 86011-0001; School of Earth and Sustainability, Northern Arizona University, Flagsatff, AZ 86011, (5)School of Earth and Ocean Sciences, University of Victoria, Bob Wright Centre, Victoria, BC V8W 2Y2, Canada, (6)U.S. Geological Survey, 2130 SW 5th Ave, Portland, OR 97201
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