Oligocene development of the west antarctic ice sheet recorded in eastern ross sea strata

Publication Status is "Submitted" Or "In Press: 
LDEO Publication: 
Publication Type: 
Journal Article
Year of Publication: 
2007
Authors: 
Sorlien, C. C.; Luyendyk, B. P.; Wilson, D. S.; Decesari, R. C.; Bartek, L. R.; Diebold, J. B.
Editor: 
Journal Title: 
Geology
Journal Date: 
May
Place Published: 
Tertiary Title: 
Volume: 
35
Issue: 
5
Pages: 
467-470
Section / Start page: 
Publisher: 
ISBN Number: 
0091-7613
ISSN Number: 
Edition: 
Short Title: 
Accession Number: 
ISI:000250253900021
LDEO Publication Number: 
Call Number: 
Key Words: 
antarctic ice sheet; marie byrd land; west antarctica; seismic; stratigraphy; ross sea; oligocene; basins; history; erosion;
Abstract: 

Seismic-reflection data from the easternmost Ross Sea image buried scour-and-fill troughs and flat-topped ridges interpreted as having formed by glacial erosion and deposition during the Oligocene. The NNW-SSE orientation of the troughs and lack of similar Oligocene glacial features within the central Ross Sea suggests that the ice issued from the highlands of Marie Byrd Land located 100 km away and that portions of the West Antarctic Ice Sheet formed earlier than previously accepted. Existing global climate models (GCMs) do not produce West Antarctic ice caps for the Oligocene, in part due to low elevations modeled for that time. Evidence for Oligocene ice beyond the paleocoast suggests a higher elevation for the early Cenozoic Marie Byrd Land and Ross Embayment than at present.

Notes: 

221UXTimes Cited:1Cited References Count:16

URL: 
<Go to ISI>://000250253900021
DOI: 
Doi 10.1130/G23387a.1