GSA Annual Meeting in Denver, Colorado, USA - 2016

Session No. 202
Tuesday, 27 September 2016: 8:00 AM-12:00 PM
Room 507 (Colorado Convention Center)

T218. Evidence for Neotectonic Earthquakes and Their Driving Mechanisms in the Intraplate Region of Central and Eastern North America

GSA Structural Geology and Tectonics Division; GSA Geophysics Division; GSA Environmental and Engineering Geology Division; GSA Quaternary Geology and Geomorphology Division; EarthScope; U.S. Geological Survey
J. Wright Horton Jr., Christine A. Powell and Robert A. Williams, Advocates
8:00 AM
WHAT CAN THE STUDY OF MODERN SEISMICITY TELL US ABOUT PAST AND FUTURE LARGE SHOCKS?
CHAPMAN, Martin C., WU, Qimin, HARDY, Anna C. and BEALE, Jacob N., Department of Geosciences, Virginia Tech, 4044 Derring Hall, Blacksburg, VA 24061, mcc@vt.edu
Handouts
  • chapman_gsa_2016_working.pptx (36.9 MB)
  • 8:20 AM
    RIVER SINUOSITY RESPONSE TO CENTRAL AND EASTERN US (CEUS) INTRAPLATE SEISMICITY WITH A FOCUS IN THE CENTRAL VIRGINIA AND CHARLESTON SEISMIC ZONES
    CARNES, Lorrie, PAZZAGLIA, Frank J. and KODAMA, Kenneth, Earth and Environmental Sciences, Lehigh University, 1 West Packer Ave., Bethlehem, PA 18015-3001, lkc216@lehigh.edu
    8:35 AM
    INVESTIGATING THE INFLUENCE OF PREEXISTING GEOLOGIC FEATURES ON OUTLYING SHALLOW AFTERSHOCK CLUSTERS TRIGGERED BY THE 2011 MINERAL, VIRGINIA, EARTHQUAKE
    HORTON Jr., J. Wright1, CARTER, Mark W.2, CHAPMAN, Martin C.3, WU, Qimin3, SHAH, Anjana K.4 and WITT, Anne C.5, (1)U.S. Geological Survey, 926A National Center, 12201 Sunrise Valley Drive, Reston, VA 20192, (2)U.S. Geological Survey, 926A National Center, Reston, VA 20192, (3)Department of Geosciences, Virginia Tech, 4044 Derring Hall, Blacksburg, VA 24061, (4)U.S. Geological Survey, Box 25046, MS 964, Denver Federal Center, Denver, CO 80225, (5)Division of Geology and Mineral Resources, Virginia Department of Mines, Minerals and Energy, 900 Natural Resources Drive, Suite 500, Charlottesville, VA 22903, whorton@usgs.gov
    8:50 AM
    REACTIVATION AND SUPERPOSITION OF CENOZOIC BRITTLE DEFORMATION IN OROGEN-PARALLEL SHEAR ZONES IN THE SOUTHERN APPALACHIAN MOUNTAINS: THE EVERONA FAULT AND MOUNTAIN RUN FAULT ZONE IN VIRGINIA, U.S.A
    BOBYARCHICK, Andy R., Department of Geography & Earth Sciences, University of North Carolina at Charlotte, 9201 University City Blvd, Charlotte, NC 28223, arbobyar@uncc.edu
    9:05 AM
    INTRAPLATE SEISMICITY IN THE MID-ATLANTIC US
    SOTO-CORDERO, Lillian, MELTZER, Anne S. and STACHNIK, Josh, Earth and Environmental Sciences, Lehigh University, 1 West Packer Ave, Bethlehem, PA 18015, lis213@lehigh.edu
    9:20 AM
    NOT SO STABLE AFTER ALL: LITHOSPHERIC STRUCTURES BENEATH THE SOUTHEASTERN UNITED STATES (Invited Presentation)
    WAGNER, Lara S., Department of Terrestrial Magnetism, Carnegie Institution for Science, 5241 Broad Branch Road NW, Washington, DC 20015, BIRYOL, C. Berk, Department of Geosciences, University of Arizona, Tucson, AZ 85721, FISCHER, Karen M., Department of Geological Sciences, Brown University, Providence, RI 02912 and HAWMAN, Robert B., Department of Geology, University of Georgia, 210 Field St, Athens, GA 30602, lwagner@carnegiescience.edu
    9:40 AM
    VELOCITY STRUCTURE IN THE LITHOSPHERE BENEATH THE MISSISSIPPI EMBAYMENT AND NEW MADRID SEISMIC ZONE
    NYAMWANDHA, Cecilia and POWELL, Christine A., Center for Earthquake Research and Information, University of Memphis, 3890 Central Avenue, Memphis, TN 38152, capowell@memphis.edu
     
    9:55 AM
    Break
    10:10 AM
    EARTHSCOPE-ENABLED INSIGHTS INTO THE NORTH AMERICAN CRUST AND MANTLE (Invited Presentation)
    LEKIC, Vedran, BURDICK, Scott, OLUGBOJI, Tolulope, CUNNINGHAM, Erin and GAO, Chao, Department of Geology, University of Maryland, College Park, MD 20742, ved@umd.edu
    10:30 AM
    FIELD EVIDENCE OF LATE QUATERNARY FAULTING IN THE EASTERN TENNESSEE SEISMIC ZONE NEAR KNOXVILLE AND IMPLICATIONS FOR SEISMIC HAZARD
    COX, Randel Tom1, HATCHER Jr., Robert D.2, GLASBRENNER, Jacob C.2 and GAMBLE, Eric1, (1)Earth Sciences, University of Memphis, Johnson Hall, Memphis, TN 38152, (2)Earth and Planetary Sciences, University of Tennessee-Knoxville, 306 Earth and Planetary Sciences Building, Knoxville, TN 37996, randycox@memphis.edu
    Handouts
  • Cox et al ETSZ.pptx (20.3 MB)
  • 10:45 AM
    PALEOSEISMIC INVESTIGATIONS IN THE EAST TENNESSEE SEISMIC ZONE
    GLASBRENNER, Jacob C.1, HATCHER Jr., Robert D.1 and COX, Randel Tom2, (1)Earth and Planetary Sciences, University of Tennessee-Knoxville, 306 Earth and Planetary Sciences Building, Knoxville, TN 37996, (2)Earth Sciences, University of Memphis, Johnson Hall, Memphis, TN 38152, bobmap@utk.edu
    11:00 AM
    QUATERNARY DISPLACEMENT RATES ON THE MEEMAN-SHELBY FAULT AND JOINER RIDGE HORST, EASTERN ARKANSAS: EVIDENCE FOR MIGRATING STRAIN IN THE REELFOOT RIFT
    COUNTS, Ronald1, WARD, Alex C.2, VAN ARSDALE, Roy B.2, LARSEN, Daniel3 and MAHAN, Shannon A.4, (1)U.S. Geological Survey, 926A National Center, Reston, VA 20192, (2)Earth Sciences, University of Memphis, 1 Johnson Hall, Memphis, TN 38152, (3)Earth Sciences, University of Memphis, 113 Johnson Hall, Memphis, TN 38152, (4)U.S. Geological Survey, Denver Federal Center, Denver, CO 80225, rcounts@usgs.gov
    11:15 AM
    GEOMORPHIC AND PALEOSEISMIC INVESTIGATION OF THE BIG CREEK FAULT ZONE, PIGTAIL POINT, PHILLIPS COUNTY, ARKANSAS
    GRAY, Brian1, BALDWIN, John1, BLOSZIES, Christopher1 and HARRIS, James B.2, (1)Lettis Consultants International, Inc., 1981 N. Broadway, Suite 330, Walnut Creek, CA 94596, (2)Department of Geology, Millsaps College, 1701 N. State St., Jackson, MS 39210, bgray@lettisci.com
    11:30 AM
    SHALLOW SEISMIC REFLECTION IMAGING OF THE KINGTOWN LINEAMENT WITHIN THE BIG CREEK FAULT ZONE, NORTHEAST ARKANSAS
    HARRIS, James B.1, MACHURA, Gregory D.1 and HARRIS, Rachel S.2, (1)Department of Geology, Millsaps College, 1701 N. State St., Jackson, MS 39210, (2)Centre College, 600 W. Walnut St., Danville, KY 40422, harrijb@millsaps.edu
     
    11:45 AM
    Discussion
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