Late glacial to middle Holocene climatic record of lacustrine biogenic silica oxygen isotopes from a Southern Ocean island

Research Article| November 01, 1999 Late glacial to middle Holocene climatic record of lacustrine biogenic silica oxygen isotopes from a Southern Ocean island Gunhild C. Rosqvist; Gunhild C. Rosqvist 1Department of Physical Geography, Stockholm University, S-106 91 Stockholm, Sweden Search for other works by this author on: GSW Google Scholar Miri Rietti-Shati; Miri Rietti-Shati 2Department of Environmental Sciences and Energy Research, Weizmann Institute of Science, Rehovot 76100, Israel Search for other works by this author on: GSW Google Scholar Aldo Shemesh Aldo Shemesh 2Department of Environmental Sciences and Energy Research, Weizmann Institute of Science, Rehovot 76100, Israel Search for other works by this author on: GSW Google Scholar Geology (1999) 27 (11): 967–970. https://doi.org/10.1130/0091-7613(1999)027<0967:LGTMHC>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 Gunhild C. Rosqvist, Miri Rietti-Shati, Aldo Shemesh; Late glacial to middle Holocene climatic record of lacustrine biogenic silica oxygen isotopes from a Southern Ocean island. Geology 1999;; 27 (11): 967–970. doi: https://doi.org/10.1130/0091-7613(1999)027<0967:LGTMHC>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 Analyses of oxygen isotopes in biogenic silica, carbon isotopes of organic matter, organic carbon content, and gray-scale density from radiocarbon-dated sediment cores retrieved from a lake located on the island of South Georgia (54°S, 36°W) provide the first late glacial to middle Holocene paleoclimatic record from this area of the Southern Ocean. The deglaciation on South Georgia, today 350 km south of the Antarctic convergence, commenced prior to 18.6 ka. Colder conditions were reinstated shortly after 14 ka and lasted across the Younger Dryas chronozone (12.7–11.5 ka) without significant change. The recorded transition to postglacial conditions between 8.4 and 6.5 ka was interrupted by a 400 yr cold event that began ca. 7.8 ka. Our results provide evidence of climate change from sub-Antarctic latitudes that helps determine the existence and timing of late Pleistocene and Holocene millennial-scale climatic events in the Southern Hemisphere. 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.