Structure of the penultimate deglaciation along the California margin and implications for Milankovitch theory

Research Article| February 01, 2005 Structure of the penultimate deglaciation along the California margin and implications for Milankovitch theory Kevin G. Cannariato; Kevin G. Cannariato 1Geological Sciences and Marine Science Institute, University of California, Santa Barbara, California 93106, USA Search for other works by this author on: GSW Google Scholar James P. Kennett James P. Kennett 1Geological Sciences and Marine Science Institute, University of California, Santa Barbara, California 93106, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Kevin G. Cannariato 1Geological Sciences and Marine Science Institute, University of California, Santa Barbara, California 93106, USA James P. Kennett 1Geological Sciences and Marine Science Institute, University of California, Santa Barbara, California 93106, USA Publisher: Geological Society of America Received: 03 Aug 2004 Revision Received: 29 Oct 2004 Accepted: 01 Nov 2004 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2005) 33 (2): 157–160. https://doi.org/10.1130/G21065.1 Article history Received: 03 Aug 2004 Revision Received: 29 Oct 2004 Accepted: 01 Nov 2004 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Kevin G. Cannariato, James P. Kennett; Structure of the penultimate deglaciation along the California margin and implications for Milankovitch theory. Geology 2005;; 33 (2): 157–160. doi: https://doi.org/10.1130/G21065.1 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 The detailed structure and timing of the penultimate deglaciation are insufficiently defined yet critical for understanding mechanisms responsible for abrupt climate change. Here we present oxygen isotope records (from planktonic and benthic foraminifera) at unprecedented resolution encompassing late marine oxygen isotope stage (MIS) 6 and Termination II (ca. 150–120 ka) from the Santa Barbara Basin, supported by additional southern California margin records, a region highly sensitive to millennial-scale climate oscillations during the last deglaciation. These records reveal millennial- and centennial-scale climate variability throughout the interval, including an interstadial immediately preceding the deglaciation, a brief warm event near the beginning of Termination II, and a Bølling-Allerød–Younger Dryas–like climate oscillation midway through the deglaciation. Recognition of these events in an oxygen isotope record from a 230Th-dated stalagmite allows the adoption of this radiometric chronology for the California margin records. This chronology supports the Milankovitch theory of deglaciation. The suborbital history of climate variability during Termination II may account for records of early deglaciation. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.