Evidence of early Holocene glacial advances in southern South America from cosmogenic surface-exposure dating

Abstract

Research Article| March 01, 2005 Evidence of early Holocene glacial advances in southern South America from cosmogenic surface-exposure dating D.C. Douglass; D.C. Douglass 1Department of Geology and Geophysics, University of Wisconsin, Madison, Wisconsin 53706, USA Search for other works by this author on: GSW Google Scholar B.S. Singer; B.S. Singer 1Department of Geology and Geophysics, University of Wisconsin, Madison, Wisconsin 53706, USA Search for other works by this author on: GSW Google Scholar M.R. Kaplan; M.R. Kaplan 2Department of Geology and Geophysics, University of Wisconsin, Madison, Wisconsin 53706, USA, and School of GeoSciences, University of Edinburgh, Edinburgh EH8 9XP, Scotland, UK Search for other works by this author on: GSW Google Scholar R.P. Ackert; R.P. Ackert 3Department of Earth and Planetary Science, Harvard University, Cambridge, Massachusetts 02138, USA Search for other works by this author on: GSW Google Scholar D.M. Mickelson; D.M. Mickelson 4Department of Geology and Geophysics, University of Wisconsin, Madison, Wisconsin 53706, USA Search for other works by this author on: GSW Google Scholar M.W. Caffee M.W. Caffee 5PRIME Lab, Purdue University, West Lafayette, Indiana 47907, USA Search for other works by this author on: GSW Google Scholar Author and Article Information D.C. Douglass 1Department of Geology and Geophysics, University of Wisconsin, Madison, Wisconsin 53706, USA B.S. Singer 1Department of Geology and Geophysics, University of Wisconsin, Madison, Wisconsin 53706, USA M.R. Kaplan 2Department of Geology and Geophysics, University of Wisconsin, Madison, Wisconsin 53706, USA, and School of GeoSciences, University of Edinburgh, Edinburgh EH8 9XP, Scotland, UK R.P. Ackert 3Department of Earth and Planetary Science, Harvard University, Cambridge, Massachusetts 02138, USA D.M. Mickelson 4Department of Geology and Geophysics, University of Wisconsin, Madison, Wisconsin 53706, USA M.W. Caffee 5PRIME Lab, Purdue University, West Lafayette, Indiana 47907, USA Publisher: Geological Society of America Received: 30 Aug 2004 Revision Received: 26 Oct 2004 Accepted: 28 Oct 2004 First Online: 02 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2005) 33 (3): 237–240. https://doi.org/10.1130/G21144.1 Article history Received: 30 Aug 2004 Revision Received: 26 Oct 2004 Accepted: 28 Oct 2004 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation D.C. Douglass, B.S. Singer, M.R. Kaplan, R.P. Ackert, D.M. Mickelson, M.W. Caffee; Evidence of early Holocene glacial advances in southern South America from cosmogenic surface-exposure dating. Geology 2005;; 33 (3): 237–240. doi: https://doi.org/10.1130/G21144.1 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 nuclide surface-exposure dating reveals that glaciers in southern South America (46°S) advanced ca. 8.5 and 6.2 ka, likely as a result of a northward migration of the Southern Westerlies that caused an increase in precipitation and/or a decrease in temperature at this latitude. The older advance precedes the currently accepted initiation of Holocene glacial activity in southern South America by ∼3000 yr. Both of these advances are temporally synchronous with Holocene climate oscillations that occurred in Greenland and the rest of the world. If there are causal links between these events, then rapid climate changes appear to be either externally forced (e.g., solar variability) or are rapidly propagated around the globe (e.g., atmospheric processes). You do not have access to this content, please speak to your institutional administrator if you feel you should have access.