Sediment geochemistry at Site 1089, Leg 177

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doi: 10.2973/odp.proc.sr.177.102.2001
Author(s): Latimer, Jennifer C.; Filippelli, Gabriel M.
Ocean Drilling Program, Leg 177, Shipboard Scientific Party, College Station, TX
Author Affiliation(s): Primary:
Indiana University-Purdue University Indianapolis, Department of Geology, Indianapolis, IN, United States
Other:
University of Florida, United States
Ocean Drilling Program, United States
University of Bergen, Norway
University of Durham, United Kingdom
University of California at Santa Cruz, United States
Scripps Institution of Oceanography, United States
Indiana University at Purdue, United States
Universidad de Salamanca, Spain
University of New Brunswick, Canada
University of Tasmania, Australia
Hokkaido University, Japan
Florida State University, United States
University of Southampton, United Kingdom
Georgia Institute of Technology, United States
Universita di Bari, Italy
Wesleyan University, United States
Lamont-Doherty Earth Observatory, United States
Nagoya University, Japan
California State University, United States
Volume Title: Proceedings of the Ocean Drilling Program, scientific results; Southern Ocean paleoceanography; covering Leg 177 of the cruises of the drilling vessel JOIDES Resolution; Cape Town, South Africa, to Punta Arenas, Chile; sites 1088-1094; 9 December 1997-5 February 1998
Volume Author(s): Gersonde, Rainer; Hodell, David A.; Blum, Peter; Andersson, Carin; Austin, William E. N.; Billups, Katharina; Channell, James E. T.; Charles, Christopher D.; Diekmann, Bernhard; Filippelli, Gabriel M.; Flores, José-Abel; Hewitt, Antony T.; Howard, William R.; Ikehara, Minoru; Janecek, Thomas R.; Kanfoush, Sharon L.; Kemp, Alan E. S.; King, Stagg L.; Kleiven, Helga Flesche; Kuhn, Gerhard; Marino, Maria; Ninnemann, Ulysses S.; O'Connell, Suzanne; Ortiz, Joseph D.; Stoner, Joseph S.; Sugiyama, Kazuhiro; Warnke, Detlef A.; Zielinski, Ulrich
Source: Proceedings of the Ocean Drilling Program, scientific results; Southern Ocean paleoceanography; covering Leg 177 of the cruises of the drilling vessel JOIDES Resolution; Cape Town, South Africa, to Punta Arenas, Chile; sites 1088-1094; 9 December 1997-5 February 1998, Rainer Gersonde, David A. Hodell, Peter Blum, Carin Andersson, William E. N. Austin, Katharina Billups, James E. T. Channell, Christopher D. Charles, Bernhard Diekmann, Gabriel M. Filippelli, José-Abel Flores, Antony T. Hewitt, William R. Howard, Minoru Ikehara, Thomas R. Janecek, Sharon L. Kanfoush, Alan E. S. Kemp, Stagg L. King, Helga Flesche Kleiven, Gerhard Kuhn, Maria Marino, Ulysses S. Ninnemann, Suzanne O'Connell, Joseph D. Ortiz, Joseph S. Stoner, Kazuhiro Sugiyama, Detlef A. Warnke and Ulrich Zielinski; Ocean Drilling Program, Leg 177, Shipboard Scientific Party, College Station, TX. Proceedings of the Ocean Drilling Program, Scientific Results (CD ROM), Vol.177, 14p. Publisher: Texas A&M University, Ocean Drilling Program, College Station, TX, United States. ISSN: 1096-2514
Note: In English. Data report; available only on CD-ROM in PDF format and on the Web in PDF or HTML. 4 refs.CD-ROM format, ISSN 1096-2514; WWW format, ISSN 1096-7451; illus., incl. 1 table
Summary: A primary objective of Ocean Drilling Program Leg 177 was to document changes in circulation and biogeochemical cycling on glacial/interglacial time scales across a wide latitudinal range of the south Atlantic Ocean. One of the more northerly sites drilled, Site 1089 (41°S, 10°E), is located within the present-day subantarctic zone, south of the subtropical front. The drilling site itself is located in the southern Cape Basin at a water depth of 4620 m. Pleistocene sediments at this site are dominated by interbedded carbonate and opal oozes. Initial shipboard stratigraphy identified the opal-rich sediments as deposited during glacial intervals and the carbonate-rich sediments as deposited during interglacial intervals. Post-cruise isotopic stratigraphy, however, verified that this site displayed a Pacific Pleistocene sedimentation pattern with glacial intervals marked by high carbonate content. To assess changes in biological productivity and terrigenous inputs at this site, a number of geochemical indicators were determined. Phosphorus concentrations and P/metal ratios were determined to assess changes in export production on glacial/interglacial time scales. Metal concentrations, along with elemental ratios, were used to assess terrigenous inputs. Sediment geochemistry allows us to identify changes in the lithologic component using elemental data based on Fe, Al, and Ti concentrations. Records of concentrations and ratios of biologically related elements identify changes in export production. The P and metal results are important to assess the glacial/interglacial changes in P burial and the relationships between a major nutrient such as P with metals (and possibly trace nutrients) like Fe.
Year of Publication: 2003
Research Program: ODP Ocean Drilling Program
Key Words: 02 Geochemistry; 24 Surficial Geology, Quaternary Geology; Biochemistry; Carbonates; Cenozoic; Chemical composition; Framework silicates; Geochemical cycle; Geochemistry; Glacial environment; Interglacial environment; Leg 177; Marine sediments; ODP Site 1089; Ocean Drilling Program; Opal; Paleo-oceanography; Paleoclimatology; Pleistocene; Quaternary; Reconstruction; Sediments; Silica minerals; Silicates; Southern Ocean
Coordinates: S405611 S405611 E0095338 E0095338
Record ID: 2003053329
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