Integrated Ocean Drilling Program, Expeditions 303 and 306 scientific prospectus; North Atlantic climate; ice sheet-ocean atmosphere interactions on millenial timescales during the late Neogene-Quaternary using a paloeintensity-assisted chronology for the North Atlantic; documenting and monitoring bottom water temperature variations through time; installing a CORK at Site 642, Norwegian-Greenland Sea

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doi: 10.2204/iodp.sp.303306.2004
Author(s): Channell, James E. T.; Sato, Tokiyuki; Kanamatsu, Toshiya; Stein, Ruediger; Malone, Mitchell J.
Author Affiliation(s): Primary:
University of Florida, Department of Geological Sciences, Gainesville, FL, United States
Akita University, Japan
Japan Agency for Marine-Earth Science and Technology, Japan
Alfred-Wegener-Institut für Polar- und Meeresforschung, Federal Republic of Germany
Integrated Ocean Drilling Program, United States
Source: Scientific Prospectus (Integrated Ocean Drilling Program), Vol.303/306, 90p. Publisher: IODP Management International, College Station, TX, United States. ISSN: 1932-9415
Note: In English. 77 refs.
Summary: Integrated Ocean Drilling Program Expeditions 303 and 306 are based on two separate proposals (572-Full3 and 543-Full2/543-ADD) entitled "Ice sheet-ocean atmosphere interactions on millennial timescales during the late Neogene-Quaternary using a paleointensity-assisted chronology (PAC) for the North Atlantic" and "Installation of a CORK in Hole 642E to document and monitor bottom water temperature variations through time," now 2 and 4 years old, respectively. This prospectus updates information presented in the proposals based on site survey data and other operational refinements. The objective of Proposal 572-Full3 is to place late Neogene-Quaternary climate proxies in the North Atlantic into a paleointensity-assisted chronology (PAC), a chronology based on a combination of geomagnetic paleointensity, stable isotope, and detrital layer stratigraphies. Proposed primary sites are located off Orphan Knoll (Newfoundland), on the Eirik Drift (southeast Greenland), on the southern Gardar Drift, and in the central Atlantic "ice-rafted debris (IRD) belt." Mean sedimentation rates are estimated to be in the range of 5-50 cm/k.y. at these sites. The advanced piston corer (APC), utilizing the drillover technique, may be expected to reach penetration depths of ∼300 meters below seafloor, resulting in recovery of late Neogene to Quaternary climate records. Coring operations will likely be restricted to APC because of the inadequacy of extended core barrel (XCB) cores for high-resolution stratigraphy. The objective of Proposal 543-Full2 is to place a CORK at Ocean Drilling Program Site 642 (Voring Plateau) to document and monitor bottom water temperature variations through time. A 150 m casing string with reentry cone will be drilled into the surface sediment followed by installation of a thermister string and CORK.
Year of Publication: 2004
Research Program: IODP Integrated Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Absolute age; Alkaline earth metals; Arctic Ocean; Atlantic Ocean; Be-10; Beryllium; Boreholes; Cenozoic; Chemostratigraphy; Chronostratigraphy; Climate change; Cores; Drilling; Expeditions; Expeditions 303/306; Geophysical methods; Geophysical profiles; Geophysical surveys; Glacial geology; Ice sheets; Integrated Ocean Drilling Program; Isotope ratios; Isotopes; Lithostratigraphy; Magnetic intensity; Magnetostratigraphy; Marine drilling; Metals; Neogene; North Atlantic; Norwegian Sea; O-18/O-16; Oxygen; Paleo-oceanography; Paleoclimatology; Paleomagnetism; Planning; Quaternary; Radioactive isotopes; Seismic methods; Seismic profiles; Seismic stratigraphy; Stable isotopes; Surveys; Tertiary
Record ID: 2007088831
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute.

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