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Early Holocene retreat of the George VI Ice Shelf, Antarctic Peninsula

Bentley, M.J.; Hodgson, D.A.; Sugden, D.E.; Roberts, S.J.; Smith, J.A.; Leng, M.J.; Bryant, C.

Authors

D.A. Hodgson

D.E. Sugden

S.J. Roberts

J.A. Smith

M.J. Leng

C. Bryant



Abstract

The recent collapse of several Antarctic Peninsula ice shelves has been linked to rapid regional atmospheric warming during the twentieth century. New high-resolution lake sediment records of Holocene ice-shelf behavior show that the George VI Ice Shelf was absent beginning ca. 9595 calibrated (cal.) yr B.P., but reformed by ca. 7945 cal. yr B.P. This retreat immediately followed a period of maximum Holocene warmth that is recorded in some ice cores and occurred at the same time as an influx of warmer ocean water onto the Antarctic Peninsula shelf. The absence of the ice shelf suggests that early Holocene ocean-atmosphere variability in the Antarctic Peninsula was greater than that measured in recent decades

Citation

Bentley, M., Hodgson, D., Sugden, D., Roberts, S., Smith, J., Leng, M., & Bryant, C. (2005). Early Holocene retreat of the George VI Ice Shelf, Antarctic Peninsula. Geology, 33(3), 173-176. https://doi.org/10.1130/g21203.1

Journal Article Type Article
Publication Date 2005-03
Deposit Date Mar 13, 2007
Journal Geology
Print ISSN 0091-7613
Electronic ISSN 1943-2682
Publisher Geological Society of America
Peer Reviewed Peer Reviewed
Volume 33
Issue 3
Pages 173-176
DOI https://doi.org/10.1130/g21203.1
Keywords Ice shelves, Antarctic Peninsula, Holocene, Paleoclimate, Circumpolar Deep Water.