Anderson, L. D. and Ravelo, A. C. (2002): Biogenic opal in Palmer Deep sediments, Site 1098, Leg 178

Leg/Site/Hole:
ODP 178
ODP 178 1098
Identifier:
2003-022397
georefid
10.2973/odp.proc.sr.178.216.2001
doi
Creator:
Anderson, L. D.
University of California at Santa Cruz, Institute of Marine Science, Santa Cruz, CA, United States
author
Ravelo, A. C.
Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, Italy
author
Identification:
Biogenic opal in Palmer Deep sediments, Site 1098, Leg 178
2002
In: Baker, Peter F. (editor), Camerlenghi, Angelo (editor), Acton, Gary D. (editor), Brachfeld, Stefanie A., Cowan, Ellen A., Daniels, James, Domack, Eugene W., Escutia, Carlota, Evans, Andrew J., Eyles, Nicholas, Guyodo, Yohan J. B., Hatfield, Kate L., Iorio, Marina, Iwai, Masao, Kyte, Frank T., Lauer, Christine, Maldonado, Andres, Moerz, Tobias, Osterman, Lisa E., Pudsey, Carol J., Schuffert, Jeffrey D., Sjunneskog, Charlotte M., Weinheimer, Amy L., Williams, Trevor, Winter, Diane M., Wolf-Welling, Thomas C. W., Ramsay, Anthony T. S. (editor), Proceedings of the Ocean Drilling Program, scientific results, Antarctic glacial history and sea-level change; covering Leg 178 of the cruises of the drilling vessel JOIDES Resolution; Punta Arenas, Chile, to Cape Town, South Africa; sites 1095-1103; 5 February-9 April 1998
Texas A&M University, Ocean Drilling Program, College Station, TX, United States
178
High-resolution records of sedimentary proxies provide insights into fine-scale geochemical responses to climatic forcing. Gamma-ray attenuation (GRA) bulk-density data and magnetic stratigraphy records from Palmer Deep, Site 1098, show variability close to the same scale as ice cores, making this site ideal for high-resolution geochemical investigations. In conjunction with shipboard geophysical measurements, silica records allow high-resolution evaluation of the frequencies and amplitudes of biogenic variability. This provides investigators additional data sets to evaluate the global extent of climatic events that are presently defined by regional oceanic data sets (e.g., Younger Dryas in the North Atlantic) and to evaluate the potential mechanisms that link biological productivity and climate in the Southern Ocean.
English
Serial
Coverage:Geographic coordinates:
North:-64.5143
West:-64.1228East: -64.1228
South:-64.5143
Mineralogy of silicates; Oceanography; Antarctic Ocean; Antarctic Peninsula; Antarctica; biogenic processes; concentration; continental margin; cores; framework silicates; gamma-ray methods; Leg 178; marine sediments; Ocean Drilling Program; ocean floors; ODP Site 1098; opal; Palmer Deep; sediments; silica minerals; silicates;
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