Does the late Pliocene change in the architecture of the Antarctic margin correspond to the transition to the modern Antarctic Ice Sheet?
Open-File Report
2007-1047-SRP-021
By: M. Rebesco and Angelo Camerlenghi
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Abstract
We observe in 6 key sectors of East and West Antarctica continental margin a change in the geometry of the
sedimentary deposits which is characterized by: margin-wide erosion and subsequent progradation on the continental
shelf; downlap on the continental slope; major mass wasting deposits on the continental rise. The change occurs in the
late Neogene in all sectors, though some natural variation exists, and the stratigraphic position is not obvious for every
margin. The change is apparently synchronous and dated about 3 Ma in Antarctic Peninsula and Prydz Bay margins and
broadly concomitant in the others sectors. This suggests a common driving force, which we suggest to be the transition
of the Antarctic ice sheet regime from polythermal to present polar cold, dry-based conditions
Suggested Citation
Rebesco, M., Camerlenghi, A., 2007, Does the late Pliocene change in the architecture of the Antarctic margin correspond to the transition to the modern Antarctic Ice Sheet?: U.S. Geological Survey Open-File Report 2007-1047-SRP-021, 5 p., https://doi.org/10.3133/ofr20071047SRP021.
ISSN: 2331-1258 (online)
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Does the late Pliocene change in the architecture of the Antarctic margin correspond to the transition to the modern Antarctic Ice Sheet? |
| Series title | Open-File Report |
| Series number | 2007-1047-SRP-021 |
| DOI | 10.3133/ofr20071047SRP021 |
| Year Published | 2007 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Description | 5 p. |
| Larger Work Type | Report |
| Larger Work Subtype | USGS Numbered Series |
| Larger Work Title | Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007 |
| Other Geospatial | Antarctica |
| Additional Online Files (Y/N) | N |