Leg 202 summary

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doi: 10.2973/odp.proc.ir.202.101.2003
Author(s): Mix, Alan C.; Tiedemann, Ralf; Blum, Peter; Abrantes, Fatima F.; Benway, Heather; Cacho-Lascorz, Isabel; Chen, Min-Te; Delaney, Margaret L.; Flores, José-Abel; Giosan, Liviu; Holbourn, Ann E.; Irino, Tomohisa; Iwai, Masao; Joseph, Leah H.; Kleiven, Helga F.; Lamy, Frank; Lund, Steven P.; Martinez, Philippe; McManus, Jerry F.; Ninnemann, Ulysses S.; Pisias, Nicklas G.; Robinson, Rebecca S.; Stoner, Joseph S.; Sturm, Arne; Wara, Michael W.; Wei, Wuchang
Ocean Drilling Program, Leg 202, Shipboard Scientific Party, College Station, TX
Author Affiliation(s): Primary:
Oregon State University, College of Oceanic and Atmospheric Sciences, Corvallis, OR, United States
Other:
Christian-Albrechts-Universität, Federal Republic of Germany
Ocean Drilling Program, United States
Instituto Geologico e Mineiro, Portugal
University of Cambridge, United Kingdom
National Taiwan Ocean University, Taiwan
University of California at Santa Cruz, United States
Universidad Salamanca, Spain
Woods Hole Oceanographic Institution, United States
Hokkaido University, Japan
Kochi University, Japan
Hobart and William Smith Colleges, United States
Universitetet i Bergen, Norway
Universität Bremen, Federal Republic of Germany
University of Southern California, United States
Université de Bordeaux I, France
Lamont-Doherty Earth Observatory, United States
Princeton University, United States
University of Colorado at Boulder, United States
Scripps Institution of Oceanography, United States
Christian-Albrechts-Universität zu Kiel, Federal Republic of Germany
Volume Title: Proceedings of the Ocean Drilling Program, initial reports, Southeast Pacific paleoceanographic transects; covering Leg 202 of the cruises of the drilling vessel JOIDES Resolution; Valparaiso, Chile, to Balboa, Panama; sites 1232-1242, 29 March-30 May 2002
Volume Author(s): Mix, Alan C.; Tiedemann, Ralf; Blum, Peter; Abrantes, Fatima F.; Benway, Heather; Cacho-Lascorz, Isabel; Chen, Min-Te; Delaney, Margaret L.; Flores, José-Abel; Giosan, Liviu; Holbourn, Ann E.; Irino, Tomohisa; Iwai, Masao; Joseph, Leah H.; Kleiven, Helga F.; Lamy, Frank; Lund, Steven P.; Martinez, Philippe; McManus, Jerry F.; Ninnemann, Ulysses S.; Pisias, Nicklas G.; Robinson, Rebecca S.; Stoner, Joseph S.; Sturm, Arne; Wara, Michael W.; Wei, Wuchang; May, Krista L.; Miller, Angeline T.; Peters, Lorri L.
Source: Proceedings of the Ocean Drilling Program, initial reports, Southeast Pacific paleoceanographic transects; covering Leg 202 of the cruises of the drilling vessel JOIDES Resolution; Valparaiso, Chile, to Balboa, Panama; sites 1232-1242, 29 March-30 May 2002, Alan C. Mix, Ralf Tiedemann, Peter Blum, Fatima F. Abrantes, Heather Benway, Isabel Cacho-Lascorz, Min-Te Chen, Margaret L. Delaney, José-Abel Flores, Liviu Giosan, Ann E. Holbourn, Tomohisa Irino, Masao Iwai, Leah H. Joseph, Helga F. Kleiven, Frank Lamy, Steven P. Lund, Philippe Martinez, Jerry F. McManus, Ulysses S. Ninnemann, Nicklas G. Pisias, Rebecca S. Robinson, Joseph S. Stoner, Arne Sturm, Michael W. Wara, Wuchang Wei, Krista L. May, Angeline T. Miller and Lorri L. Peters; Ocean Drilling Program, Leg 202, Shipboard Scientific Party, College Station, TX. Proceedings of the Ocean Drilling Program, Part A: Initial Reports, Vol.202, 145p. Publisher: Texas A&M University, Ocean Drilling Program, College Station, TX, United States. ISSN: 0884-5883 CODEN: IDSDA6
Note: In English. Also available on CD-ROM in PDF format and on the Web in PDF or HTML. 139 refs.CD-ROM format, ISSN 1096-2522; WWW format, ISSN 1096-2158; illus., incl. sects., 4 tables, sketch maps
Summary: More than 7 km of long and relatively continuous sediment sequences from 11 sites in the southeast and equatorial Pacific were recovered during Leg 202 for the study of the Earth's climate and biogeochemical systems on scales that range from tectonic (millions of years) to orbital (tens to hundreds of thousands of years) and centennial to millennial (hundreds to thousands of years). These materials will be used to test a broad set of hypotheses on (1) the evolution of the South Pacific Ocean as it responds to and modulates the effects of major tectonic and climatic events, such as the opening of the Drake Passage, uplift of the Andes Mountains, closure of the Isthmus of Panama, and major expansion of polar ice sheets; (2) linkage between climate and biogeochemical changes in the high latitudes and the equatorial Pacific, related to rhythmic changes in Earth's orbit, and the relationship of such changes to well-known glacial events of the Northern Hemisphere; and (3) global and regional changes in climate, biota, and ocean chemistry on timescales of centuries to millennia to millions of years. Three sites (1236, 1237, and 1241) targeted sequences with relatively low sedimentation rates of <30 m/m.y. to obtain long records of climate and oceanographic change representing the Neogene and, in some cases, the late Paleogene that are not subject to severe burial diagenesis. Two sites (1238 and 1239) targeted moderate sedimentation rates of 30-80 m/m.y. to assess orbital-scale climate and biogeochemistry oscillations at a resolution suitable for the tuning of timescales and examination of changing responses to orbital forcing during the late Neogene.
Year of Publication: 2003
Research Program: ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Biostratigraphy; Cenozoic; Climate change; Climate forcing; Cores; East Pacific; Geochemistry; Leg 202; Lithostratigraphy; Magnetostratigraphy; Ocean Drilling Program; Ocean floors; Orbital forcing; Pacific Ocean; Paleoclimatology; Paleomagnetism; South Pacific; Southeast Pacific
Coordinates: S420000 N080000 W0730000 W0870000
Record ID: 2004021629
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