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Glacier readvance during the late glacial (Younger Dryas?) in the Ahklun Mountains, southwestern Alaska

2002; Geological Society of America; Volume: 30; Issue: 8 Linguagem: Inglês

10.1130/0091-7613(2002)030 2.0.co;2

1943-2682

Jason P. Briner, Darrell S. Kaufman, Al Werner, Marc W. Caffee, Laura B. Levy, William Manley, Michael R. Kaplan, Robert C. Finkel,

Climate change and permafrost

Research Article| August 01, 2002 Glacier readvance during the late glacial (Younger Dryas?) in the Ahklun Mountains, southwestern Alaska Jason P. Briner; Jason P. Briner 1Institute of Arctic and Alpine Research and Department of Geological Sciences, University of Colorado, Boulder, Colorado 80303, USA Search for other works by this author on: GSW Google Scholar Darrell S. Kaufman; Darrell S. Kaufman 2Department of Geology and Department of Environmental Sciences, Northern Arizona University, Flagstaff, Arizona 86011, USA Search for other works by this author on: GSW Google Scholar Al Werner; Al Werner 3Department of Earth and Environment, Mount Holyoke College, South Hadley, Massachusetts 01075, USA Search for other works by this author on: GSW Google Scholar Marc Caffee; Marc Caffee 4Purdue Rare Isotope Measurement Laboratory and Department of Physics, Purdue University, West Lafayette, Indiana 47907, USA Search for other works by this author on: GSW Google Scholar Laura Levy; Laura Levy 5Department of Geology, Northern Arizona University, Flagstaff, Arizona 86011, USA Search for other works by this author on: GSW Google Scholar William F. Manley; William F. Manley 6Institute of Arctic and Alpine Research, University of Colorado, Boulder, Colorado 80303, USA Search for other works by this author on: GSW Google Scholar Michael R. Kaplan; Michael R. Kaplan 7Department of Geology and Geophysics, University of Wisconsin, Madison, Wisconsin 53706, USA Search for other works by this author on: GSW Google Scholar Robert C. Finkel Robert C. Finkel 8Center for Accelerator Mass Spectrometry, Lawrence Livermore National Laboratory, Livermore, California 94550, USA Search for other works by this author on: GSW Google Scholar Geology (2002) 30 (8): 679–682. https://doi.org/10.1130/0091-7613(2002)030 2.0.CO;2 Article history received: 16 Jan 2002 rev-recd: 11 Apr 2002 accepted: 16 Apr 2002 first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Jason P. Briner, Darrell S. Kaufman, Al Werner, Marc Caffee, Laura Levy, William F. Manley, Michael R. Kaplan, Robert C. Finkel; Glacier readvance during the late glacial (Younger Dryas?) in the Ahklun Mountains, southwestern Alaska. Geology 2002;; 30 (8): 679–682. doi: https://doi.org/10.1130/0091-7613(2002)030 2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract An expansion of alpine glaciers during the latest Pleistocene produced an extraordinarily well defined end moraine system in the Ahklun Mountains, southwestern Alaska. These moraines, deposited during the Mount Waskey advance, are several kilometers beyond modern glacier termini, and ∼80 km upvalley of the late Wisconsin Ahklun Mountains ice cap terminal moraine. Eleven cosmogenic 10Be and 26Al exposure ages on moraine boulders, combined with radiocarbon ages from a lake core upvalley of a moraine deposited during the Mount Waskey advance, suggest that the advance culminated between 12.4 and 11.0 ka, sometime during, or shortly following, the Younger Dryas event (ca. 12.9–11.6 ka). We believe that the Mount Waskey advance was a consequence of cooling during the Younger Dryas. These data further strengthen emerging evidence for Younger Dryas–age cooling of the North Pacific region. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.