Benthic foraminiferal record of Holocene deep-water evolution in the Palmer Deep, western Antarctic Peninsula

Abstract

Research Article| May 01, 2002 Benthic foraminiferal record of Holocene deep-water evolution in the Palmer Deep, western Antarctic Peninsula S.E. Ishman; S.E. Ishman 1Department of Geology, Southern Illinois University, Carbondale, Illinois 62901-4324, USA Search for other works by this author on: GSW Google Scholar M.R. Sperling M.R. Sperling 2Institute and Museum of Geology and Paleontology, Sigwartstrasse 10, Tübingen, Germany Search for other works by this author on: GSW Google Scholar Geology (2002) 30 (5): 435–438. https://doi.org/10.1130/0091-7613(2002)030<0435:BFROHD>2.0.CO;2 Article history received: 09 Sep 2001 rev-recd: 27 Dec 2001 accepted: 14 Jan 2002 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 S.E. Ishman, M.R. Sperling; Benthic foraminiferal record of Holocene deep-water evolution in the Palmer Deep, western Antarctic Peninsula. Geology 2002;; 30 (5): 435–438. doi: https://doi.org/10.1130/0091-7613(2002)030<0435:BFROHD>2.0.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 Benthic foraminiferal data from Ocean Drilling Program Site 1098 indicate significant changes in deep-water conditions of the Palmer Deep, western Antarctic Peninsula margin, throughout the Holocene (13 ka to present). The earliest Holocene represents a period of transition from the Last Glacial Maximum (LGM). Cold bottom waters, similar to saline shelf water (SSW), dominated the middle Holocene. The late Holocene in the Palmer Deep has been characterized by alternating dominance of circumpolar deep water (CDW) and saline shelf water. These changes have global oceanographic and climatic implications. We suggest that the middle Holocene bottom-water record, in the absence of circumpolar deep water on the western Antarctic Peninsula shelf, indicates high saline shelf water production and/or weakened circumpolar deep water production during the middle Holocene climatic optimum. The late Holocene benthic foraminiferal record indicates rapidly fluctuating sea-ice conditions and may indicate a teleconnection between the South Pacific and Southern Ocean, thus having implications related to the Southern Oscillation Index. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.