GSA Annual Meeting in Seattle, Washington, USA - 2017

Session No. 212
Tuesday, 24 October 2017: 8:00 AM-12:00 PM
Chelan 2 (The Conference Center)

T187. How, and Under What Conditions, Does Weathering Influence Surface Processes?

GSA Quaternary Geology and Geomorphology Division; GSA Soils and Soil Processes Interdisciplinary Interest Group
Martha Cary Eppes, Gregory S. Hancock, Greg M. Stock and Bernard Hallet, Advocates
8:30 AM
HILLSLOPES IN THE MOJAVE:  REGIMES OF WEATHERING, SOIL FORMATION, AND EROSION ALTERED BY A FLIP OF THE PLEISTOCENE-HOLOCENE CLIMATE SWITCH (Invited Presentation)
PERSICO, Lyman P., Department of Geology, Whitman College, 345 Boyer Avenue, Walla Walla, WA 99362, MCFADDEN, Les, Earth and Planetary Sciences, Univ of New Mexico, Albuquerque, NM 87131 and MCAULIFFE, Joseph R., Desert Botanical Garden, 1201 N. Galvin Pkwy, Phoenix, AZ 85008, persiclp@whitman.edu
8:45 AM
ASPECT-DEPENDENT FEEDBACKS BETWEEN REGOLITH PRODUCTION AND TRANSPORT AT THE SHALE HILLS CRITICAL ZONE OBSERVATORY
WEST, Nicole, Earth and Atmospheric Sciences, Central Michigan University, Mount Pleasant, MI 48859, KIRBY, Eric, College of Earth, Ocean and Atmospheric Sciences, Oregon State University, Wilkinson 202D, Corvallis, OR 97331, NYBLADE, Andrew A., Geosciences Dept, Pennsylvania State University, 447 Deike Bldg, University Park, PA 16802 and BRANTLEY, Susan L., Earth and Environmental Systems Institute, Pennsylvania State University, Department of Geosciences, 2217 EES Building, University Park, PA 16802, nicole.west@cmich.edu
9:00 AM
DIFFERENTIAL WEATHERING AND RELATIONSHIPS BETWEEN TOPOGRAPHY, LITHOLOGY, AND REGOLITH THICKNESS IN EAST-CENTRAL PENNSYLVANIA
GERMANOSKI, Dru, Geology and Environmental Geosciences, Lafayette College, Easton, PA 18042, germanod@lafayette.edu
9:15 AM
WHEN WATER IS SCARCE AND ROCKS ARE FRAGILE, EQUATOR-FACING VALLEY NETWORKS OUT-STRETCH THEIR POLE-FACING COUNTERPARTS
JOHNSTONE, Sam, Central Minerals and Environmental Resources Science Center, U.S. Geological Survey, Denver Federal Center, Denver, CO 80225, FINNEGAN, Noah J., Earth and Planetary Sciences, University of California, Santa Cruz, Santa Cruz, CA 95064 and HILLEY, George E., Department of Geological Sciences, Stanford University, 455 Serra Mall, Building 320, Stanford, CA 94305-2115, sjohnstone@usgs.gov
9:30 AM
COLLAPSE OF THE AFRICAN WEATHERING SURFACE ACROSS THE CONGO BASIN TRIGGERED CHANGES IN CENOZOIC OCEAN CHEMISTRY
LINOL, Bastien1, DE VILLIERS, Stephanie2 and DE WIT, Maarten J.1, (1)AEON-ESSRI, Nelson Mandela University, South Campus, Summerstrand, Port Elizabeth, 6001, South Africa, (2)Oceans and Coasts Research, Department of Environmental Affairs, Cape Town, South Africa, bastien.aeon@gmail.com
 
9:45 AM
Break
10:00 AM
FIELD EVIDENCE FOR THE INFLUENCE OF WEATHERING ON ROCK ERODIBILITY AND CHANNEL FORM IN BEDROCK RIVERS
HANCOCK, Gregory S., Department of Geology, College of William & Mary, Williamsburg, VA 23187, SHOBE, Charles M., Cooperative Institute for Research in Environmental Sciences (CIRES) and Department of Geological Sciences, University of Colorado, Boulder, CO 80309, EPPES, M.C., Department of Geography and Earth Sciences, University of North Carolina at Charlotte, 9201 University City Boulevard, Charlotte, NC 28223 and SMALL, Eric E., Department of Geological Sciences, University of Colorado at Boulder, Boulder, CO 80309, gshanc@wm.edu
10:15 AM
GEOLOGIC CONTROLS ON SHORE PLATFORM MORPHOLOGY: IMPLICATIONS FOR BIODIVERSITY
CERDA, Carla Ivanna, Environmental Studies, University of Portland, 5000 N Willamette ave, Portland, OR 97203 and SWEENEY, Kristin E., Environmental Studies, University of Portland, 5000 N Willamette Ave, Portland, OR 97203, cerdac18@up.edu
10:30 AM
A MICROMETER THICK COATING LAYER SLOWING THE WEATHERING RATE OF GLACIAL POLISH (Invited Presentation)
SIMAN-TOV, Shalev, Dept. of Earth and Planetary Sciences, University of California, Santa Cruz, 1156 High St., Santa Cruz, CA 95064, STOCK, Greg M., National Park Service, Yosemite National Park, El Portal, CA 95318, BRODSKY, Emily E., Earth and Planetary Sciences, University of California, Santa Cruz, 1156 High St, Santa Cruz, CA 95064 and WHITE, Joseph Clancy, Earth Sciences, University of New Brunswick, 2 Bailey Dr, Fredericton, NB E3B 5A3, Canada, shalevst@gmail.com
10:45 AM
CLIMATE, MECHANICAL WEATHERING, ROCK EROSION AND REGOLITH PRODUCTION: NEW INSIGHTS FROM FRACTURE MECHANICS
EPPES, Martha Cary, Department of Geography & Earth Sciences, University of North Carolina at Charlotte, 9201 University City Boulevard, Charlotte, NC 28223 and KEANINI, Russell, Mechanical Engineering and Engineering Science, University of North Carolina at Charlotte, Charlotte, NC 28223, meppes@uncc.edu
11:00 AM
CONSTRAINING THE PHYSICS OF SUBCRITICAL CRACK GROWTH IN CARRARA MARBLE USING NEUTRON DIFFRACTION TECHNIQUES
VOIGTLAENDER, Anne1, LEITH, Kerry2 and KRAUTBLATTER, Michael1, (1)Department of Civil, Geo and Environmental Engineering, Technical University of Munich, Arcisstr. 21, Munich, 80333, Germany, (2)Department of Earth Sciences, Eidgenössische Technische Hochschule Zurich, Sonneggstr. 5, Zurich, 8092, Switzerland, a.voigtlaender@tum.de
11:15 AM
MECHANICAL ROCK BREAKDOWN DUE TO DIURNAL SOLAR EXPOSURE: RESOLVING A PARADOX BETWEEN OBSERVATIONS AND THEORY (Invited Presentation)
MACKENZIE-HELNWEIN, Peter, Civil and Environmental Engineering, University of Washington, 121D More Hall, Box 352700, Seattle, WA 98195 and HALLET, Bernard, Earth and Space Sciences and Quaternary Research Center, University of Washington, Seattle, WA 98195, pmackenz@uw.edu
11:30 AM
THERMALLY-INDUCED ROCK EXFOLIATION AS A MODULATOR FOR GRANITE DOME WEATHERING
COLLINS, Brian D., Landslide Hazards Program, U.S. Geological Survey, 345 Middlefield Road, MS973, Menlo Park, CA 94025, STOCK, Greg M., National Park Service, Yosemite National Park, El Portal, CA 95318, EPPES, Martha C., Department of Geography and Earth Sciences, University of North Carolina at Charlotte, 9201 University City Blvd, Charlotte, NC 28223, LEWIS, Scott W., Condor Earth Technologies, Inc., 21663 Brian Lane, Sonora, CA 95370, CORBETT, Skye C., U.S. Geological Survey, Menlo Park, CA 94025 and SMITH, Joel B., U.S. Geological Survey, Geologic Hazards Science Center, Denver Federal Center, P.O. Box 25046, MS 966, Denver, CO 80225, bcollins@usgs.gov
11:45 AM
SPATIAL AND TEMPORAL EVOLUTION OF ROCK DOME EXFOLIATION IN DIFFERENT CLIMATIC, GEOMORPHIC AND GEOLOGIC SETTINGS
MOSER, Faye L., Department of Geography & Earth Sciences, University of North Carolina at Charlotte, 9201 University City Blvd, Charlotte, NC 28223, WEISERBS, Benjamin, Department of Geography & Earth Sciences, University of North Carolina at Charlotte, 9201 University City Boulevard, Charlotte, NC 28223 and EPPES, Martha C., Department of Geography and Earth Sciences, University of North Carolina at Charlotte, 9201 University City Blvd, Charlotte, NC 28223, fvisco@uncc.edu
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