Session: Timing of Pleistocene Glaciation in the North American Cordillera (Posters) (2010 GSA Denver Annual Meeting (31 October

T127. Timing of Pleistocene Glaciation in the North American Cordillera (Posters)

GSA Quaternary Geology and Geomorphology Division

Authors will be present from 9 to 11 AM, and 4:30 to 5:30 PM.

Paper #

Booth #

401

A NEW ¹⁰BE CHRONOLOGY OF LATE PLEISTOCENE MORAINES AND GLACIAL OUTBURST FLOOD TERRACES IN THE UPPER ARKANSAS RIVER VALLEY, COLORADO

BRINER, Jason P., Department of Geological Sciences, University at Buffalo, 126 Cooke Hall, Buffalo, NY 14260, YOUNG, Nicolás E., Department of Geology, University at Buffalo, 411 Cooke Hall, Buffalo, NY 14260, LEONARD, Eric M., Geology, Colorado College, Colorado Springs, CO 80903 and LEE, Keenan, Dept. of Geology, Colorado School of Mines, Golden, CO 80402, jbriner@buffalo.edu, jbriner@buffalo.edu

402

NEW COSMOGENIC ¹⁰BE SURFACE EXPOSURE AGES FOR THE PURCELL TRENCH LOBE OF THE CORDILLERAN ICE SHEET IN IDAHO

BRECKENRIDGE, Roy M., Idaho Geological Survey, University of Idaho, PO BOX 443014, Moscow, ID 83844-3014 and PHILLIPS, William M., Idaho Geological Survey, University of Idaho, 875 Perimeter Dr MS 3014, Moscow, ID 83844-3014, roybreck@uidaho.edu, roybreck@uidaho.edu

403

TEPHROCHRONOLOGIC CONSTRAINTS ON PRE-WISCONSINAN GLACIAL CHRONOLOGIES IN YUKON AND ALASKA

JENSEN, Britta J.L.¹, FROESE, Duane¹, WARD, Brent C.² and BOND, Jeffrey D.³, (1)Earth and Atmospheric Sciences, University of Alberta, 1-26 Earth Sciences Building, Edmonton, AB T6G 2E3, Canada, (2)Earth Sciences, Simon Fraser Univ, 1, Burnaby, BC V5A 1S6, Canada, (3)Yukon Geological Survey, P.O. Box 2703, Whitehorse, YT Y1A 1B5, Canada, bjjensen@ualberta.ca, bjjensen@ualberta.ca

404

GLACIAL LIMITS AND PALEOENVIRONMENTAL RECONSTRUCTIONS OF THE NORTHERN CORDILLERA OVER THE LAST 200 KA, YUKON TERRITORY, CANADA

TURNER, Derek G.¹, WARD, Brent C.¹, BOND, Jeffrey D.², GOSSE, John C.³, JENSEN, Britta J.L.⁴, FROESE, Duane G.⁴ and TELKA, Alice M.⁵, (1)Earth Sciences, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada, (2)Energy Mines and Resources, Yukon Geological Survey, P.O. Box 2703, Whitehorse, YT Y1A 0C2, Canada, (3)Earth Sciences, Dalhousie University, 3006 LSC Edzell Castle Circle, Halifax, NS B3H3J5, Canada, (4)Earth and Atmospheric Sciences, University of Alberta, 1-26 Earth Sciences Building, Edmonton, AB T6G 2E3, Canada, (5)Paleotec Services, 1-574 Somerset Street West, Ottawa, ON K1R 5K2, Canada, dgturner@sfu.ca, dgturner@sfu.ca

405

LAST GLACIAL MAXIMUM CLIMATE IN THE SOUTHERNMOST ROCKY MOUNTAINS, USA

JACOBSEN, Robert E., Geology, Colorado College, 14 E. Cache La Poudre, Colorado Springs, CO 80903, LEONARD, Eric M., Geology, Colorado College, Colorado Springs, CO 80903 and PLUMMER, Mitchell A., Idaho National Laboratory, 2525 Fremont St, Idaho Falls, ID 83415, rjacobsen.geo@gmail.com, rjacobsen.geo@gmail.com

406

MODEL FOR LATE WISCONSINAN MASSIVE OUTBURST FLOODING, TOK RIVER VALLEY, NORTHEASTERN ALASKA RANGE

HUBBARD, Trent D., Alaska Division of Geological & Geophysical Surveys, 3354 College Road, Fairbanks, AK 99709 and REGER, Richard D., Reger's Geologic Consulting, P.O. Box 3326, Soldotna, AK 99669, trent.hubbard@alaska.gov, trent.hubbard@alaska.gov

407

LONGITUDINAL TRENDS OF LATE PLEISTOCENE EQUILIBRIUM-LINE ALTITUDES ACROSS THE COLORADO ROCKY MOUNTAINS: IMPLICATIONS FOR CLIMATE DURING THE LAST GLACIAL MAXIMUM

BRUGGER, Keith A., Geology Discipline, University of Minnesota, Morris, 600 E. 4th Street, Morris, MN 56267, bruggeka@morris.umn.edu, bruggeka@morris.umn.edu

408

ANCIENT CATACLYSMIC FLOODS IN THE PACIFIC NORTHWEST; ANCESTORS TO THE MISSOULA FLOODS

MEDLEY, Erica A., Geology, Portland State University, 1721 SW Broadway, PO Box 751, Portland, OR 97207 and BURNS, Scott F., Department of Geology, Portland State University, P.O. Box 751, Portland, OR 97207-0751, Erica.Medley@gmail.com, Erica.Medley@gmail.com

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