Multiple generations of interglacial lake sediment preserved beneath the Laurentide Ice Sheet

Research Article| October 01, 2007 Multiple generations of interglacial lake sediment preserved beneath the Laurentide Ice Sheet J.P. Briner; J.P. Briner 1Department of Geology, University at Buffalo, State University of New York, Buffalo, New York 14260, USA Search for other works by this author on: GSW Google Scholar Y. Axford; Y. Axford 2Institute of Arctic and Alpine Research, University of Colorado, Boulder, Colorado 80303, and Department of Geology, University at Buffalo, State University of New York, Buffalo, New York 14260, USA Search for other works by this author on: GSW Google Scholar S.L. Forman; S.L. Forman 3Department of Earth and Environmental Sciences, University of Illinois at Chicago, Chicago, Illinois 60607, USA Search for other works by this author on: GSW Google Scholar G.H. Miller; G.H. Miller 4Institute of Arctic and Alpine Research, University of Colorado, Boulder, Colorado 80303, USA Search for other works by this author on: GSW Google Scholar A.P. Wolfe A.P. Wolfe 5Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta AB T6G 2E3, Canada Search for other works by this author on: GSW Google Scholar Author and Article Information J.P. Briner 1Department of Geology, University at Buffalo, State University of New York, Buffalo, New York 14260, USA Y. Axford 2Institute of Arctic and Alpine Research, University of Colorado, Boulder, Colorado 80303, and Department of Geology, University at Buffalo, State University of New York, Buffalo, New York 14260, USA S.L. Forman 3Department of Earth and Environmental Sciences, University of Illinois at Chicago, Chicago, Illinois 60607, USA G.H. Miller 4Institute of Arctic and Alpine Research, University of Colorado, Boulder, Colorado 80303, USA A.P. Wolfe 5Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta AB T6G 2E3, Canada Publisher: Geological Society of America Received: 21 Feb 2007 Revision Received: 08 May 2007 Accepted: 11 May 2007 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 The Geological Society of America, Inc. Geology (2007) 35 (10): 887–890. https://doi.org/10.1130/G23812A.1 Article history Received: 21 Feb 2007 Revision Received: 08 May 2007 Accepted: 11 May 2007 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation J.P. Briner, Y. Axford, S.L. Forman, G.H. Miller, A.P. Wolfe; Multiple generations of interglacial lake sediment preserved beneath the Laurentide Ice Sheet. Geology 2007;; 35 (10): 887–890. doi: https://doi.org/10.1130/G23812A.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 It is generally assumed that regions glaciated by continental ice sheets offer little promise for long paleoenvironmental records due to erosional processes associated with glaciation. We show that beneath portions of the northeastern Laurentide Ice Sheet, characterized by cold-based glaciation, sediment sequences representing multiple interglaciations have been preserved within extant lake basins. Radiocarbon and optically stimulated luminescence dating confirm the antiquity of the sediments, thereby extending the terrestrial paleoenvironmental record of the Canadian Arctic by hundreds of thousands of years. The lake sediment record presented here corroborates numerous recent cosmogenic exposure dating studies indicating complex patterns of erosion beneath polar ice sheets. It also demonstrates that the presence of intact interglacial sediments does not demand unglaciated refugia. Similarly ancient sediments may be preserved in many regions formerly covered by Pleistocene ice sheets. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.