Domack, Eugene W. (2002): A synthesis for Site 1098; Palmer Deep. Texas A&M University, Ocean Drilling Program, College Station, TX, United States, 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, 178, georefid:2003-022429

Site 1098 in Palmer Deep recovered the first ultra high resolution Holocene to late Pleistocene time series from the Antarctic continental margin. The sedimentary record is similar to others obtained by the Ocean Drilling Program in the Cariaco Basin, Saanich Inlet, and Santa Barbara Basin. Whereas Palmer Deep is a deep enclosed basin in an area of high seasonal productivity, anoxic bottom-water conditions have never developed. Rather, the preservation of laminated sediments is a product of sediment focusing and high but short-lived productivity that overwhelms bioturbation. A complementary data set including diatoms, foraminifers, physical properties, grain size, trace elements, organic geochemistry, and sediment color is controlled by a detailed radiocarbon chronology from the composite core stratigraphy. Results indicate a climate record characterized by climate oscillations during the late Pleistocene to Holocene transition, a middle Holocene climatic optimum, and a late Holocene neoglacial. The neoglacial paleooceanographic setting was characterized by alternating Circumpolar Deep Water and saline shelf water at the bottom of the basin. All studies performed to date are in agreement in recognizing the Little Ice Age as a prominent episode in the latest Holocene from 0.7 to 0.2 ka. Detailed studies of laminated intervals indicate that a significant number of productivity events (seasons) are missing; hence, the record is not a complete continuous time series but is nevertheless extremely useful in establishing a paleoenvironmental reference for the circum-Antarctic.
West: -64.1228 East: -64.1228 North: -64.5143 South: -64.5143
Expedition: 178
Site: 178-1098
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Available only on CD-ROM in PDF format and on the Web in PDF or HTML. access date Feb. 24, 2002
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