Magnetic properties and their implications at Site 1007

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doi: 10.2973/odp.proc.sr.166.121.2000
Author(s): Arai, Kohsaku; Sato, Tokiyuki
Ocean Drilling Program, Leg 166, Shipboard Scientific Party, College Station, TX
Author Affiliation(s): Primary:
Geological Survey of Japan, Marine Geology Department, Tsukuba, Japan
Other:
Ocean Drilling Program, United States
Geological Survey of Japan, Japan
Johann Wolfgang Goethe-Universität, Federal Republic of Germany
University of South Carolina, United States
University of Hawaii, United States
CNRS-Centre de Sédimentologie et de Géochimie de la Surface, France
University of Bourgogne, France
University of Michigan, United States
Rice University, United States
University of Sydney, Australia
Lamont-Doherty Earth Observatory, United States
Vrije Universiteit, Netherlands
Nova University, United States
University of Edinburgh, United Kingdom
ETH-Zentrum, Switzerland
University of East Anglia, United Kingdom
University of Houston, United States
Christian-Albrechts-Universität zu Kiel, Federal Republic of Germany
Akita University, Japan
University of Copenhagen, Denmark
Leicester University, United Kingdom
University of Maine, United States
Volume Title: Proceedings of the Ocean Drilling Program, scientific results, Bahamas Transect; covering Leg 166 of the cruises of the drilling vessel JOIDES Resolution, San Juan, Puerto Rico, to Balboa Harbor, Panama, sites 1003-1009, 17 February-10 April 1996
Volume Author(s): Swart, Peter K.; Eberli, Gregor P.; Malone, Mitchell J.; Anselmetti, Flavio S.; Arai, Kohsaku; Bernet, Karin H.; Betzler, Christian; Christensen, Beth A.; De Carlo, Eric Heinen; Déjardin, Pascale M.; Emmanuel, Laurent; Frank, Tracy D.; Haddad, Geoffrey A.; Isern, Alexandra R.; Katz, Miriam E.; Kenter, Jeroen A. M.; Kramer, Philip A.; Kroon, Dick; McKenzie, Judith A.; McNeill, Donald F.; Montgomery, Paul; Nagihara, Seiichi; Pirmez, Carlos; Reijmer, John J. G.; Sato, Tokiyuki; Schovsbo, Niels H.; Williams, Trevor; Wright, James D.; Lowe, Ginny
Source: Proceedings of the Ocean Drilling Program, scientific results, Bahamas Transect; covering Leg 166 of the cruises of the drilling vessel JOIDES Resolution, San Juan, Puerto Rico, to Balboa Harbor, Panama, sites 1003-1009, 17 February-10 April 1996, Peter K. Swart, Gregor P. Eberli, Mitchell J. Malone, Flavio S. Anselmetti, Kohsaku Arai, Karin H. Bernet, Christian Betzler, Beth A. Christensen, Eric Heinen De Carlo, Pascale M. Déjardin, Laurent Emmanuel, Tracy D. Frank, Geoffrey A. Haddad, Alexandra R. Isern, Miriam E. Katz, Jeroen A. M. Kenter, Philip A. Kramer, Dick Kroon, Judith A. McKenzie, Donald F. McNeill, Paul Montgomery, Seiichi Nagihara, Carlos Pirmez, John J. G. Reijmer, Tokiyuki Sato, Niels H. Schovsbo, Trevor Williams, James D. Wright and Ginny Lowe; Ocean Drilling Program, Leg 166, Shipboard Scientific Party, College Station, TX. Proceedings of the Ocean Drilling Program, Scientific Results, Vol.166, p.35-43. Publisher: Texas A & M University, Ocean Drilling Program, College Station, TX, United States. ISSN: 0884-5891
Note: In English. 15 refs.CD-ROM format, ISSN 1096-2514; WWW format, ISSN 1096-7451; all chapters are also available on the included CD-ROM and on the Web in PDF format; illus., incl. 1 table, sketch map
Summary: A detailed rock magnetic study was conducted on the top six cores (above 57.5 meters below seafloor) at Site 1007. The calcareous nannofossil biostratigraphy assigns the studied intervals to an age ranging from early Pleistocene to Holocene. We found two significant conversion points in the Pleistocene based on isothermal remanent magnetization (IRM) acquisition and on alternating field demagnetization of anhysteretic remanent magnetization and IRM. These conversion points correlate strongly with changes in sedimentation rate and lithology. We conclude that the paleomagnetic signals reflect changes of rate of sediment supply and of paleoenvironment on the western edge of the Great Bahama Bank.
Year of Publication: 2000
Research Program: ODP Ocean Drilling Program
Key Words: 24 Surficial Geology, Quaternary Geology; Algae; Anhysteretic remanent magnetization; Atlantic Ocean; Caribbean Sea; Cenozoic; Clastic sediments; Great Bahama Bank; Isothermal remanent magnetization; Leg 166; Lithofacies; Magnetic properties; Magnetization; Marine sediments; Nannofossils; Natural remanent magnetization; North Atlantic; ODP Site 1007; Ocean Drilling Program; Ooze; Paleoclimatology; Paleomagnetism; Plantae; Quaternary; Reconstruction; Remanent magnetization; Sediments; Variations
Coordinates: N243016 N243016 W0791921 W0791921
Record ID: 2001002883
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