Radiocarbon constraints on ice sheet advance and retreat in the Weddell Sea, Antarctica

Research Article| February 01, 1999 Radiocarbon constraints on ice sheet advance and retreat in the Weddell Sea, Antarctica John B. Anderson; John B. Anderson 1Department of Geology and Geophysics, Rice University, Houston, Texas, 77251-1892, USA Search for other works by this author on: GSW Google Scholar John T. Andrews John T. Andrews 2Institute for Arctic and Alpine Research and Department of Geological Sciences, Box 450, University of Colorado, Boulder, Colorado, 80309, USA Search for other works by this author on: GSW Google Scholar Geology (1999) 27 (2): 179–182. https://doi.org/10.1130/0091-7613(1999)027<0179:RCOISA>2.3.CO;2 Article history 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 John B. Anderson, John T. Andrews; Radiocarbon constraints on ice sheet advance and retreat in the Weddell Sea, Antarctica. Geology 1999;; 27 (2): 179–182. doi: https://doi.org/10.1130/0091-7613(1999)027<0179:RCOISA>2.3.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 We report here the results of a study aimed at providing radiometric age control on glacial events in the Weddell Sea during the late Quaternary. Sediment cores from the eastern continental shelf, where the East Antarctic ice sheet was grounded, have recovered glacial-marine sediments resting on tills and the latter deposits predate the isotope stage 2 last glacial maximum. Sediment cores from the continental slope and rise sampled a prominent ice-rafted debris layer, and radiocarbon ages indicate that this ice-rafting event took place prior to 26 000 yr B.P. Thus, the combined data indicate that significant deglaciation of the Weddell Sea continental shelf took place prior to the last glacial maximum. Our data also suggest that the ice masses that border the Weddell Sea are more extensive than they were during the previous glacial minimum. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.