Oxygen isotope stratigraphy of ODP Leg 177 sites 1088, 1089, 1090, 1093, and 1094

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doi: 10.2973/odp.proc.sr.177.120.2003
Author(s): Hodell, David A.; Charles, Christopher D.; Curtis, Jason H.; Mortyn, P. Graham; Ninnemann, Ulysses S.; Venz, Kathryn A.
Ocean Drilling Program, Leg 177, Shipboard Scientific Party, College Station, TX
Author Affiliation(s): Primary:
University of Florida, Department of Geology, Gainesville, FL, 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
University of California at San Diego, 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, 26p. 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. 19 refs.CD-ROM format, ISSN 1096-2514; WWW format, ISSN 1096-7451; illus., incl. 7 tables, sketch map
Summary: While onboard ship during Leg 177, we used variations in sediment physical properties (mainly percent color reflectance) in conjunction with biomagnetostratigraphy to correlate among sites and predict the position of marine isotope stages (MISs). Our working assumption was that physical properties of Leg 177 sediments are controlled mainly by variations in carbonate content. Previous studies of Southern Ocean sediment cores have shown that carbonate concentrations are relatively high during interglacial stages and low during glacial stages at sites located within the Polar Frontal Zone (PFZ). Today, the PFZ marks a lithologic boundary in underlying sediment separating calcareous oozes to the north and silica-rich facies to the south. Although there is debate whether the position of the "physical" PFZ actually moved during glacial-interglacial cycles the "biochemical" PFZ, as expressed by the CaCO3/opal boundary in sediments, certainly migrated north during glacials and south during interglacials. This gave rise to lithologic variations that are useful for stratigraphic correlation. At Leg 177 sites located north of the PFZ and at sublysoclinal depths, we expected the same pattern of carbonate variation because cores in the Atlantic basin are marked by increased carbonate dissolution during glacial periods and increased preservation during interglacials. Since the end of Leg 177 in January 1998, we have analyzed stable isotopic ratios of foraminifers in thousands of samples from Ocean Drilling Program (ODP) Sites 1088, 1089, 1090, 1093, and 1094. These data provide a test of our preliminary shipboard stratigraphic interpretations. Here, we describe the methodology employed for stable isotope analysis and provide the resultant data. We present all oxygen isotope signals vs. meters composite depth (mcd) and compare them to variations in carbonate content or percent red reflectance (a proxy for carbonate content). For those records that are continuous enough to be correlated to oxygen isotope reference signals, we present the 18O signals vs. time. The paleoceanographic interpretations of the oxygen and carbon isotope results are presented in papers listed in the bibliography and several manuscripts in preparation.
Year of Publication: 2003
Research Program: ODP Ocean Drilling Program
Key Words: 02 Geochemistry; 12 Stratigraphy, Historical Geology and Paleoecology; Biostratigraphy; Calcite; Carbonates; Cenozoic; Chemostratigraphy; Cores; Correlation; Foraminifera; Geochemistry; Glacial environment; Interglacial environment; Invertebrata; Isotope ratios; Isotopes; Leg 177; Microfossils; O-18/O-16; ODP Site 1088; ODP Site 1089; ODP Site 1090; ODP Site 1093; ODP Site 1094; Ocean Drilling Program; Oxygen; Paleo-oceanography; Protista; Reconstruction; Southern Ocean; Stable isotopes
Coordinates: S410810 S410810 E0133346 E0133346
S405611 S405611 E0095338 E0095338
S425449 S425449 E0085359 E0085359
S495835 S495835 E0055156 E0055156
S531049 S531049 E0050749 E0050749
Record ID: 2003053337
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