Late Pliocene age of glacial deposits at Heidemann Valley, East Antarctica: evidence for the last major glaciation in the Vestfold Hills
A Pliocene (2.63.5 Ma) age is determined from glacial sediments studied in a 20 m long, 4 m deep trench excavated in Heidemann Valley, Vestfold Hills, East Antarctica. The age determination is based on a combined study of amino acid racemization, diatoms, foraminifera, and magnetic polarity, and sup...
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ftunivtasecite:oai:ecite.utas.edu.au:60456 2023-05-15T13:35:38+02:00 Late Pliocene age of glacial deposits at Heidemann Valley, East Antarctica: evidence for the last major glaciation in the Vestfold Hills Colhoun, E Kiernan, K McConnell, A Quilty, PG Fink, D Murray-Wallace, CV Whitehead, J 2010 https://doi.org/10.1017/S0954102009990526 http://ecite.utas.edu.au/60456 en eng Cambridge Univ Press http://dx.doi.org/10.1017/S0954102009990526 Colhoun, E and Kiernan, K and McConnell, A and Quilty, PG and Fink, D and Murray-Wallace, CV and Whitehead, J, Late Pliocene age of glacial deposits at Heidemann Valley, East Antarctica: evidence for the last major glaciation in the Vestfold Hills, Antarctic Science, 22, (1) pp. 53-63. ISSN 0954-1020 (2010) [Refereed Article] http://ecite.utas.edu.au/60456 Earth Sciences Physical Geography and Environmental Geoscience Quaternary Environments Refereed Article PeerReviewed 2010 ftunivtasecite https://doi.org/10.1017/S0954102009990526 2019-12-13T21:31:16Z A Pliocene (2.63.5 Ma) age is determined from glacial sediments studied in a 20 m long, 4 m deep trench excavated in Heidemann Valley, Vestfold Hills, East Antarctica. The age determination is based on a combined study of amino acid racemization, diatoms, foraminifera, and magnetic polarity, and supports earlier estimates of the age of the sedimentary section; all are beyond 14C range. Four till units are recognized and documented, and 16 subunits are identified. All are ascribed to deposition during a Late Pliocene glaciation that was probably the last time the entire Vestfold Hills was covered by an enlarged East Antarctic Ice Sheet (EAIS). Evidence for other more recent glacial events of the Vestfold Glaciation may have been due to lateral expansion of the Srsdal Glacier and limited expansion of the icesheet margin during the Last Glacial Maximum rather than a major expansion of the EAIS. The deposit appears to correlate with a marine deposition event recorded in Ocean Drilling Program Site 1166 in Prydz Bay, possibly with the Bardin Bluffs Formation of the Prince Charles Mountains and with part of the time represented in the ANDRILL AND-1B core in the Ross Sea. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica East Antarctica Ice Sheet Prince Charles Mountains Prydz Bay Ross Sea eCite UTAS (University of Tasmania) Antarctic Bardin Bluffs ENVELOPE(68.133,68.133,-70.819,-70.819) East Antarctic Ice Sheet East Antarctica Heidemann Valley ENVELOPE(78.021,78.021,-68.574,-68.574) Prince Charles Mountains ENVELOPE(67.246,67.246,-71.427,-71.427) Prydz Bay Ross Sea Vestfold Vestfold Hills Antarctic Science 22 01 53 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Physical Geography and Environmental Geoscience Quaternary Environments |
spellingShingle |
Earth Sciences Physical Geography and Environmental Geoscience Quaternary Environments Colhoun, E Kiernan, K McConnell, A Quilty, PG Fink, D Murray-Wallace, CV Whitehead, J Late Pliocene age of glacial deposits at Heidemann Valley, East Antarctica: evidence for the last major glaciation in the Vestfold Hills |
topic_facet |
Earth Sciences Physical Geography and Environmental Geoscience Quaternary Environments |
description |
A Pliocene (2.63.5 Ma) age is determined from glacial sediments studied in a 20 m long, 4 m deep trench excavated in Heidemann Valley, Vestfold Hills, East Antarctica. The age determination is based on a combined study of amino acid racemization, diatoms, foraminifera, and magnetic polarity, and supports earlier estimates of the age of the sedimentary section; all are beyond 14C range. Four till units are recognized and documented, and 16 subunits are identified. All are ascribed to deposition during a Late Pliocene glaciation that was probably the last time the entire Vestfold Hills was covered by an enlarged East Antarctic Ice Sheet (EAIS). Evidence for other more recent glacial events of the Vestfold Glaciation may have been due to lateral expansion of the Srsdal Glacier and limited expansion of the icesheet margin during the Last Glacial Maximum rather than a major expansion of the EAIS. The deposit appears to correlate with a marine deposition event recorded in Ocean Drilling Program Site 1166 in Prydz Bay, possibly with the Bardin Bluffs Formation of the Prince Charles Mountains and with part of the time represented in the ANDRILL AND-1B core in the Ross Sea. |
format |
Article in Journal/Newspaper |
author |
Colhoun, E Kiernan, K McConnell, A Quilty, PG Fink, D Murray-Wallace, CV Whitehead, J |
author_facet |
Colhoun, E Kiernan, K McConnell, A Quilty, PG Fink, D Murray-Wallace, CV Whitehead, J |
author_sort |
Colhoun, E |
title |
Late Pliocene age of glacial deposits at Heidemann Valley, East Antarctica: evidence for the last major glaciation in the Vestfold Hills |
title_short |
Late Pliocene age of glacial deposits at Heidemann Valley, East Antarctica: evidence for the last major glaciation in the Vestfold Hills |
title_full |
Late Pliocene age of glacial deposits at Heidemann Valley, East Antarctica: evidence for the last major glaciation in the Vestfold Hills |
title_fullStr |
Late Pliocene age of glacial deposits at Heidemann Valley, East Antarctica: evidence for the last major glaciation in the Vestfold Hills |
title_full_unstemmed |
Late Pliocene age of glacial deposits at Heidemann Valley, East Antarctica: evidence for the last major glaciation in the Vestfold Hills |
title_sort |
late pliocene age of glacial deposits at heidemann valley, east antarctica: evidence for the last major glaciation in the vestfold hills |
publisher |
Cambridge Univ Press |
publishDate |
2010 |
url |
https://doi.org/10.1017/S0954102009990526 http://ecite.utas.edu.au/60456 |
long_lat |
ENVELOPE(68.133,68.133,-70.819,-70.819) ENVELOPE(78.021,78.021,-68.574,-68.574) ENVELOPE(67.246,67.246,-71.427,-71.427) |
geographic |
Antarctic Bardin Bluffs East Antarctic Ice Sheet East Antarctica Heidemann Valley Prince Charles Mountains Prydz Bay Ross Sea Vestfold Vestfold Hills |
geographic_facet |
Antarctic Bardin Bluffs East Antarctic Ice Sheet East Antarctica Heidemann Valley Prince Charles Mountains Prydz Bay Ross Sea Vestfold Vestfold Hills |
genre |
Antarc* Antarctic Antarctic Science Antarctica East Antarctica Ice Sheet Prince Charles Mountains Prydz Bay Ross Sea |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica East Antarctica Ice Sheet Prince Charles Mountains Prydz Bay Ross Sea |
op_relation |
http://dx.doi.org/10.1017/S0954102009990526 Colhoun, E and Kiernan, K and McConnell, A and Quilty, PG and Fink, D and Murray-Wallace, CV and Whitehead, J, Late Pliocene age of glacial deposits at Heidemann Valley, East Antarctica: evidence for the last major glaciation in the Vestfold Hills, Antarctic Science, 22, (1) pp. 53-63. ISSN 0954-1020 (2010) [Refereed Article] http://ecite.utas.edu.au/60456 |
op_doi |
https://doi.org/10.1017/S0954102009990526 |
container_title |
Antarctic Science |
container_volume |
22 |
container_issue |
01 |
container_start_page |
53 |
_version_ |
1766068181038792704 |