Indications of Holocene sea-level rise in Beaver Lake, East Antarctica

Bernd Wagner*, Nadja Hultzsch, Martin Melles, Damian B. Gore

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)
1 Downloads (Pure)

Abstract

A 100 cm long sediment sequence was recovered from Beaver Lake in Amery Oasis, East Antarctica, using gravity and piston corers. Sedimentological and mineralogical analyses and the absence of micro and macrofossils indicate that the sediments at the base of the sequence formed under glacial conditions, probably prior to c. 12 500 cal. yr BP. The sediments between c. 81 and 31 cm depth probably formed under subaerial conditions, indicating that isostatic uplift since deglaciation has been substantially less than eustatic sea-level rise and that large areas of the present-day floor of Beaver Lake must have been subaerially exposed following deglaciation. The upper 31 cm of the sediment sequence were deposited under glaciomarine conditions similar to those of today, supporting geomorphic observations that the Holocene was a period of relative sea-level highstand in Amery Oasis.

Original languageEnglish
Pages (from-to)125-128
Number of pages4
JournalAntarctic Science
Volume19
Issue number1
DOIs
Publication statusPublished - Mar 2007

Bibliographical note

Copyright 2007 Cambridge University Press. Reprinted from Antarctic science.

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