GSA Annual Meeting in Seattle, Washington, USA - 2017

Session No. 340
Wednesday, 25 October 2017: 1:30 PM-5:30 PM
Chelan 2 (The Conference Center)

T186. Heterogeneity in Landscape Evolution: Geomorphic Response to Spatially and Temporally Variable Forcings

GSA Quaternary Geology and Geomorphology Division; GSA Sedimentary Geology Division; GSA Structural Geology and Tectonics Division; Future of Tectonics Initiative
Sarah A. Schanz and Charles M. Shobe, Advocates
1:30 PM
THE IMPORTANCE OF NEAR-FAULT RELIEF ELEMENTS IN DEVELOPING A “CLASSIC” STRIKE-SLIP LANDSCAPE
HARBERT, Sarah A.1, DUVALL, Alison R.1 and TUCKER, Gregory E.2, (1)Earth and Space Sciences, University of Washington, Johson Hall Rm-070, Box 351310, Seattle, WA 98195-1310, (2)Coooperative Institute for Research in Environmental Sciences (CIRES) and Department of Geological Sciences, University of Colorado at Boulder, Campus Box 399, Boulder, CO 80309, harbert1@uw.edu
1:45 PM
MODELING LANDSCAPE EVOLUTION WITHIN LAYERED ROCKS: WHITHER EQUILIBRIUM?
COVINGTON, Matthew D., Department of Geosciences, University of Arkansas, 216 Gearhart Hall, Fayetteville, AR 72701, PERNE, Matija, Institute Jozef Stefan, Ljubljana, AR, Slovenia, THALER, Evan, Department of Geosciences, University of Massachusets - Amherst, Amherst, MA 01003 and MYRE, Joseph, Department of Computer and Information Sciences, University of St. Thomas, St. Paul, MN 55105, mcoving@uark.edu
2:00 PM
INFLUENCE OF DEFORMED STRATIGRAPHY ON DRAINAGE NETWORK STRUCTURE (Invited Presentation)
FORTE, Adam M., Geology & Geophysics, Louisiana State University, E235 Howe Russell Kniffen, Baton Rouge, LA 70803, YANITES, Brian J., Department of Earth and Atmospheric Sciences, Indiana University, 1001 East 10th Street, Bloomington, IN 47405 and WHIPPLE, Kelin X., School of Earth and Space Exploration, Arizona State University, Tempe, CO 85287, aforte8@lsu.edu
2:20 PM
SOIL HETEROGENEITY PROVIDES EVIDENCE OF SPATIAL AND TEMPORAL VARIANCE IN CLIMATE-DRIVEN LANDSCAPE CHANGE, SOUTHEAST SAN JUAN MOUNTAINS, CO, USA
ALDRED, Jennifer L.1, EPPES, Missy2, KAYSER, Brandt3, DIEMER, John A.4 and DEAL, Rebecca3, (1)Department of Geography and Earth Sciences, University of North Carolina at Charlotte, 9201 University City Blvd, Charlotte, NC 28223, (2)Department of Geography & Earth Sciences, University of North Carolina at Charlotte, 9201 University City Boulevard, Charlotte, NC 28223, (3)Hart and Hickman, 2923 South Tryon Street, Suite 100, Charlotte, NC 28203, (4)Department of Geography & Earth Sciences, University of North Carolina at Charlotte, 9201 University City Blvd., McEniry 324, Charlotte, NC 28223, jaldred@uncc.edu
2:35 PM
SPATIAL AND TEMPORAL PATTERNS OF ANTHROPOGENIC-DRIVEN EROSION CONTROLLED BY ROCK TYPE
BINGHAM, Nina L.1, BOOKHAGEN, Bodo2 and CHADWICK, Oliver A.1, (1)Dept. of Geography, UC Santa Barbara, Santa Barbara, CA 93106, (2)Institute for Earth- and Environmental Sciences, University of Potsdam, Karl-Liebknecht-Str. 24-25, Potsdam, 14476, Germany, nbingham@umail.ucsb.edu
2:50 PM
DETERMINING THE PROCESS OF DESERT STREAM RECOVERY FOLLOWING DEBRIS FLOW AND IMPLICATIONS OF CLIMATE CHANGE
SCHENK, Edward R.1, TOBIN, Benjamin W.2, TANSKI, Natalie1 and MARINEAU, Mathieu3, (1)Grand Canyon National Park, National Park Service, 1824 S Thompson St, Flagstaff, AZ 86001, (2)National Park Service, Grand Canyon National Park, 1824 S Thompson St., Flagstaff, AZ 86001, (3)US Geological Survey, California Water Science Center, 6000 J Street, Placer Hall, Sacramento, CA 95819, benjamin_tobin@nps.gov
3:05 PM
GEOMORPHIC RESPONSE OF A LONG LOW-GRADIENT CHANNEL TO MODERN, DECADES-LONG AND CONTINUOUS BASE-LEVEL LOWERING: NAHAL HAARAVA, THE DEAD SEA
DENTE, Elad1, LENSKY‬‏, Nadav G.2, MORIN, Efrat1, GRODEK, Tamir1, SHEFFER, Nathan3 and ENZEL, Yehouda1, (1)The Fredy and Nadine Herrmann Institute of Earth Sciences, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Givat Ram, Jerusalem, 91904, Israel, (2)Geological Survey of Israel, 30 Malkhe Israel St., Jerusalem, 95501, Israel, (3)IMI-TAMI Geology group, Institute for Research and Development Ltd, 10140 Haifa Bay, Haifa, 26111, Israel, yehouda.enzel@mail.huji.ac.il
 
3:20 PM
Break
3:35 PM
GEOMORPHIC IMPLICATIONS OF THE OROGRAPHIC TRANSITION FROM SNOWMELT TO RAINFALL TRIGGERED EXTREME EVENTS IN THE COLORADO FRONT RANGE
ROSSI, Matthew W., Earth Lab, Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder, CO 80309, ANDERSON, Robert S., Department of Geological Sciences and INSTAAR, University of Colorado, Boulder, CO 80309, ANDERSON, Suzanne P., Department of Geography and INSTAAR, University of Colorado, Boulder, CO 80309 and TUCKER, Gregory E., Department of Geological Sciences and CIRES, University of Colorado, Boulder, CO 80309, matthew.rossi@colorado.edu
3:50 PM
BEDROCK CLIFFS, COLLUVIAL SLOPES, AND FLUVIAL RELIEF COUPLED VIA FRACTURE DENSITY AND GRAIN SIZE (Invited Presentation)
DIBIASE, Roman A.1, ROSSI, Matthew W.2 and NEELY, Alexander B.1, (1)Department of Geosciences, Pennsylvania State University, University Park, PA 16802, (2)Earth Lab, Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder, CO 80309, rdibiase@psu.edu
4:10 PM
VARIABLE THRESHOLDS IN MOUNTAIN RIVERS IMPOSED BY HILLSLOPE-DERIVED BLOCKS
SHOBE, Charles M., Cooperative Institute for Research in Environmental Sciences (CIRES) and Department of Geological Sciences, University of Colorado, Boulder, CO 80309, TUCKER, Gregory E., Coooperative Institute for Research in Environmental Sciences (CIRES) and Department of Geological Sciences, University of Colorado at Boulder, Campus Box 399, Boulder, CO 80309 and ROSSI, Matthew W., Earth Lab, Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder, CO 80309, charles.shobe@colorado.edu
4:25 PM
THE NOT-SO-STRAIGHT BUT DEFINITELY NARROW OF BEDROCK RIVERS: UNDERSTANDING CONTROLS ON SEDIMENT DISTRIBUTION AND MORPHOLOGY IN CANYONS
SCOTT, Daniel N., Geosciences, Colorado State University, 1482 Campus Delivery, Fort Collins, CO 80521, WOHL, Ellen, Department of Geosciences, Colorado State University, 1482 Campus Delivery, Fort Collins, CO 80523-1482 and ORTEGA-BECERRIL, José, Geology and Geochemistry, Autonomous University of Madrid, Madrid, 28001, Spain, dan.scott@colostate.edu
4:40 PM
TERRACES, KNICKPOINTS, AND SPATIALLY VARIABLE EROSION: INTERPRETING THE SIGNALS OF TRANSIENT TOPOGRAPHY
LYONS, Nathan J. and GASPARINI, Nicole M., Department of Earth and Environmental Sciences, Tulane University, 101 Blessey Hall, New Orleans, LA 70118, nlyons@tulane.edu
4:55 PM
BOTTOM UP OR TOP DOWN? USING TIME-SERIES ANALYSIS TO TRACK EROSIONAL SIGNALS IN AN ANALOG LANDSCAPE (Invited Presentation)
SWEENEY, Kristin E., Environmental Studies, University of Portland, 5000 N Willamette Ave, Portland, OR 97203, sweeneyk@up.edu
5:15 PM
RECONSTRUCTION OF THE AMAZON DRAINAGE BASIN, RIVER DISCHARGE, AND BASIN-SCALE EROSION RATES SINCE THE LAST GLACIAL MAXIMUM
CALLAGHAN, Kerry L.1, WICKERT, Andrew D.1, EDWARDS, R. Lawrence1 and MITROVICA, Jerry X.2, (1)Department of Earth Science, University of Minnesota, 310 Pillsbury Drive SE, Minneapolis, MN 55455, (2)Department of Earth and Planetary Sciences, Harvard University, 20 Oxford Street, Cambridge, MA 02138, calla350@umn.edu
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