GSA Annual Meeting in Seattle, Washington, USA - 2017

Session No. 8
Sunday, 22 October 2017: 8:00 AM-12:00 PM
Yakima 1 (The Conference Center)

T42. Glacier and Ice Sheet Grounding Lines: Contemporary and Past Observations of Grounding Line Processes, Behavior, and Landforms

Nicholas D. Holschuh, Lauren M. Simkins, Alexander Robel and John B. Anderson, Advocates
 
8:00 AM
Introductory Remarks
8-1
8:05 AM
GROUNDING LINE PROCESSES AND ICE SHEET MODELS (Invited Presentation)
SEROUSSI, Helene, Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109, helene.seroussi@jpl.nasa.gov
8-2
8:25 AM
DISCRETE-ELEMENT SIMULATION OF SUBGLACIAL SEDIMENTS: GROUNDING-LINE PROXIMATE TILL MECHANICS AND SOFT-BED CHANNEL DYNAMICS (Invited Presentation)
DAMSGAARD, Anders, Geophysical Fluid Dynamics Laboratory, Princeton University, 201 Forrestal Road, Princeton, NJ 08540, andersd@princeton.edu
8-3
8:45 AM
THE GEOMORPHIC SIGNATURE OF PAST ICE-SHEET GROUNDING LINES IN THE MARINE RECORD (Invited Presentation)
DOWDESWELL, Julian A., Scott Polar Research Institute, University of Cambridge, Lensfield Road, Cambridge, CB2 1ER, United Kingdom, jd16@cam.ac.uk
 
9:05 AM
Break
8-4
9:20 AM
A TERRESTRIAL PERSPECTIVE OF THE LGM IN MCMURDO SOUND, ANTARCTICA: IMPLICATIONS FOR MARINE ICE SHEET DYNAMICS, ICE FLOW, AND DEGLACIATION OF THE ROSS SEA EMBAYMENT
CHRIST, Andrew J., Department of Earth & Environment, Boston University, 685 Commonwealth Ave, Boston, MA 02215 and MARCHANT, David R., Department of Earth and Environment, Boston University, 685 Commonwealth Avenue, Boston, MA 02215, andrew.j.christ@gmail.com
8-5
9:35 AM
ROLE OF GROUNDING ZONE WEDGES IN GROUNDING LINE STABILIZATION: CASE STUDY FROM ROSS SEA
ANDERSON, John B.1, SIMKINS, Lauren1, GREENWOOD, Sarah2, DEMET, Brian1, HALBERSTADT, Anna Ruth3 and PROTHRO, Lindsay1, (1)Department of Earth Science, Rice University, 6100 Main Street MS 126, Houston, TX 77005, (2)Department of Geological Sciences, Stockholm University, SE 114 18 Stockholm, Stockholm, Sweden, (3)Department of Geosciences, University of Massachusetts, 233 Morrill Science Center, Amherst, MA 01003-9297, johna@rice.edu
8-6
9:50 AM
SEDIMENTARY PROCESSES AT PALEO-GROUNDING LINES: GLACIAL AND OCEANOGRAPHIC INTERACTIONS DURING ICE-SHEET RETREAT
PROTHRO, Lindsay O.1, SIMKINS, Lauren M.1, MAJEWSKI, Wojciech2 and ANDERSON, John B.1, (1)Department of Earth Science, Rice University, 6100 Main Street MS 126, Houston, TX 77005, (2)Department of Environmental Paleobiology, Polish Academy of Sciences, Warsaw, Poland, lp15@rice.edu
8-7
10:05 AM
AUTOGENIC CONTROLS PROLONGED LAST GLACIAL MAXIMUM GROUNDING LINE RETREAT OF THE BERING ICE STREAM
COWAN, Ellen A., Department of Geological and Environmental Sciences, Appalachian State University, P.O. Box 32067, Boone, NC 28608, ZELLERS, Sarah D., School of Environmental, Physical and Applied Science, University of Central Missouri, WCM 108, Warrensburg, MO 64093, GULICK, Sean S.P., Institute for Geophysics - Jackson School of Geosciences, University of Texas at Austin, 10100 Burnet Rd., Bldg 196, R2200, Austin, TX 78758-4445, M√úLLER, Juliane, Department of Marine Geology and Paleontology, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany and CAISSIE, Beth E., Dept. of Geological and Atmospheric Sciences, Iowa State University, 253 Science I, Ames, IA 50011, cowanea@appstate.edu
8-8
10:20 AM
SEDIMENTARY PROCESSES AT ICE SHEET GROUNDING-ZONE WEDGES: EXAMPLES FROM ANTARCTICA AND WASHINGTON STATE (U.S.A.)
DEMET, Brian P.1, NITTROUER, Jeffrey A.2, ANDERSON, John B.3 and SIMKINS, Lauren M.3, (1)Schuepbach Energy, 2651 North Harwood, Suite 570, Dallas, TX 75201; Department of Earth Science, Rice University, 6100 Main Street MS-126, Houston, TX 77005, (2)Department of Earth, Environmental and Planetary Sciences, Rice University, 6100 Main Street, MS-126, Houston, TX 77005, (3)Department of Earth Science, Rice University, 6100 Main Street MS 126, Houston, TX 77005, demet010@umn.edu
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