Cosmogenic 3He and 10Be chronologies of the late Pinedale northern Yellowstone ice cap, Montana, USA

Research Article| December 01, 2001 Cosmogenic 3He and 10Be chronologies of the late Pinedale northern Yellowstone ice cap, Montana, USA Joseph M. Licciardi; Joseph M. Licciardi 1Department of Geosciences, Oregon State University, Corvallis, Oregon 97331, USA Search for other works by this author on: GSW Google Scholar Peter U. Clark; Peter U. Clark 1Department of Geosciences, Oregon State University, Corvallis, Oregon 97331, USA Search for other works by this author on: GSW Google Scholar Edward J. Brook; Edward J. Brook 2Department of Geology, Washington State University, Vancouver, Washington 98686, USA Search for other works by this author on: GSW Google Scholar Kenneth L. Pierce; Kenneth L. Pierce 3U.S. Geological Survey, Northern Rocky Mountain Science Center, Montana State University, Bozeman, Montana 59717, USA Search for other works by this author on: GSW Google Scholar Mark D. Kurz; Mark D. Kurz 4Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA Search for other works by this author on: GSW Google Scholar David Elmore; David Elmore 5Department of Physics, PRIME Lab, Purdue University, West Lafayette, Indiana 47907, USA Search for other works by this author on: GSW Google Scholar Pankaj Sharma Pankaj Sharma 5Department of Physics, PRIME Lab, Purdue University, West Lafayette, Indiana 47907, USA Search for other works by this author on: GSW Google Scholar Geology (2001) 29 (12): 1095–1098. https://doi.org/10.1130/0091-7613(2001)029<1095:CHABCO>2.0.CO;2 Article history received: 23 Apr 2001 rev-recd: 20 Jul 2001 accepted: 07 Aug 2001 first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Joseph M. Licciardi, Peter U. Clark, Edward J. Brook, Kenneth L. Pierce, Mark D. Kurz, David Elmore, Pankaj Sharma; Cosmogenic 3He and 10Be chronologies of the late Pinedale northern Yellowstone ice cap, Montana, USA. Geology 2001;; 29 (12): 1095–1098. doi: https://doi.org/10.1130/0091-7613(2001)029<1095:CHABCO>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 Cosmogenic 3He and 10Be ages measured on surface boulders from the moraine sequence deposited by the northern outlet glacier of the Yellowstone ice cap indicate that the outlet glacier reached its terminal position at 16.5 ± 0.4 3He ka and 16.2 ± 0.3 10Be ka, respectively. Concordance of these ages supports the scaled production rates used for 3He (118.6 ± 6.6 atoms · g−1 · yr−1) and 10Be (5.1 ± 0.3 atoms · g−1 · yr−1) (±2σ at high latitudes at sea level). Two recessional moraines upvalley from the terminal moraine have mean ages of 15.7 ± 0.5 10Be ka and 14.0 ± 0.4 10Be ka, respectively, and a late-glacial flood bar was deposited at 13.7 ± 0.5 10Be ka. These cosmogenic chronologies identify a late Pinedale glacial maximum in northern Yellowstone that is significantly younger than previously thought, and they suggest deglaciation of the Yellowstone plateau by ∼14 10Be ka. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.