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Authors: Naish, T. R.*
Powell, R. D.*
Barrett, P. J.*
Levy, R. H.*
Henrys, S.*
Wilson, G. S.*
Krissek, L. A.*
Niessen, F.*
Pompilio, M.*
Ross, J.*
Scherer, R.*
Talarico, F.*
Pyne, A.*
ANDRILL-MIS Science Team, *
ANDRILL-MIS Science Team, *
Title: Late Cenozoic Climate History of the Ross Embayment from the AND-1B Drill Hole: Culmination of Three Decades of Antarctic Margin Drilling
Editors: Cooper, A. K.; Department of Geological and Environmental Sciences, Stanford University, Stanford, California 94305 USA
Powell, R. D.; Department of Geology and Environmental Geosciences, Northern Illinois University, DeKalb, IL, USA
Stagg, H.; Geoscience Australia, Canberra ACT 2601 Australia
Storey, B.; Gateway Antarctica, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
Stump, E.; School of Earth and Space Exploration, Arizona State University, Tempe, Arizona 85287 USA
Wise, W.; Department of Geological Sciences, Florida State University, Tallahassee, Florida 32306 USA
the 10th ISAES editorial team; different international Institutes and University
Issue Date: 2008
Keywords: ANDRILL
Late Cenozoic climate history
Abstract: Because of the paucity of exposed rock, the direct physical record of Antarctic Cenozoic glacial history has become known only recently and then largely from offshore shelf basins through seismic surveys and drilling. The number of holes on the continental shelf has been small and largely confined to three areas (McMurdo Sound, Prydz Bay, and Antarctic Peninsula), but even in McMurdo Sound, where Oligocene and early Miocene strata are well cored, the late Cenozoic is poorly known and dated. The latest Antarctic geological drilling program, ANDRILL, successfully cored a 1285-m-long record of climate history spanning the last 13 m.y. from subsea-floor sediment beneath the McMurdo Ice Shelf (MIS), using drilling systems specially developed for operating through ice shelves. The cores provide the most complete Antarctic record to date of ice-sheet and climate fluctuations for this period of Earth’s history. The >60 cycles of advance and retreat of the grounded ice margin preserved in the AND-1B record the evolution of the Antarctic ice sheet since a profound global cooling step in deep-sea oxygen isotope records ~14 m.y.a. A feature of particular interest is a ~90-m-thick interval of diatomite deposited during the warm Pliocene and representing an extended period (~200,000 years) of locally open water, high phytoplankton productivity, and retreat of the glaciers on land.
Appears in Collections:03.01.06. Paleoceanography and paleoclimatology
Conference materials

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