Earth-prints repository, logo   DSpace

About DSpace Software
|earth-prints home page | roma library | bologna library | catania library | milano library | napoli library | palermo library
Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/3314

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.*
the 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.
Raymond, C. R.
ISAES Editorial Team
Issue Date: 26-Aug-2007
DOI: 10.3133/of2007-1047
Keywords: climate history
ANDRILL
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 off-shore shelf basins through seismic surveys and drilling. The number of holes 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 1285m-long record of climate history spanning the last 13 m.y. from sub-sea 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. ago. A feature of particular interest is a ~90m-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:Conference materials
02.01.99. General or miscellaneous

Files in This Item:

File SizeFormatVisibility
USGS_Naish et al_2007.pdf3.16 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


Share this record
Del.icio.us

Citeulike

Connotea

Facebook

Stumble it!

reddit


 

Valid XHTML 1.0! ICT Support, development & maintenance are provided by CINECA. Powered on DSpace Software. CINECA