Late Pliocene age of glacial deposits at Heidemann Valley, East Antarctica: evidence for the last major glaciation in the Vestfold Hills.
A Pliocene (2.6–3.5 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 su...
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ftansto:oai:apo-prod.ansto.gov.au:10238/3208 2023-05-15T13:36:16+02:00 Late Pliocene age of glacial deposits at Heidemann Valley, East Antarctica: evidence for the last major glaciation in the Vestfold Hills. Colhoun, EA Kiernan, KW McConnell, A Quilty, PG Fink, D Murray-Wallace, CV Whitehead, J 2010-02 http://apo.ansto.gov.au/dspace/handle/10238/3208 https://doi.org/10.1017/S0954102009990526 en eng Cambridge University Press Colhoun, E. A., Kiernan, K. W., McConnell, A., Quilty, P. G., Fink, D., Murray-Wallace, C. V., et al. (2010). 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), 53-64. 0954-1020 http://dx.doi.org/10.1017/S0954102009990526 http://apo.ansto.gov.au/dspace/handle/10238/3208 Antarctica Glaciers Excavation Racemization Foraminifera Diatoms Journal Article 2010 ftansto https://doi.org/10.1017/S0954102009990526 2019-12-23T19:01:40Z A Pliocene (2.6–3.5 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 Sørsdal 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. © 2010, Cambridge University Press Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica East Antarctica Ice Sheet Prince Charles Mountains Prydz Bay Ross Sea Sørsdal Glacier Australian Nuclear Science and Technology Organisation: ANSTO Publications Online Antarctic East Antarctica Ross Sea Vestfold Hills Prydz Bay East Antarctic Ice Sheet Vestfold Prince Charles Mountains ENVELOPE(67.246,67.246,-71.427,-71.427) Heidemann Valley ENVELOPE(78.021,78.021,-68.574,-68.574) Bardin Bluffs ENVELOPE(68.133,68.133,-70.819,-70.819) Sørsdal Glacier ENVELOPE(78.167,78.167,-68.700,-68.700) Antarctic Science 22 01 53 |
institution |
Open Polar |
collection |
Australian Nuclear Science and Technology Organisation: ANSTO Publications Online |
op_collection_id |
ftansto |
language |
English |
topic |
Antarctica Glaciers Excavation Racemization Foraminifera Diatoms |
spellingShingle |
Antarctica Glaciers Excavation Racemization Foraminifera Diatoms Colhoun, EA Kiernan, KW 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 |
Antarctica Glaciers Excavation Racemization Foraminifera Diatoms |
description |
A Pliocene (2.6–3.5 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 Sørsdal 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. © 2010, Cambridge University Press |
format |
Article in Journal/Newspaper |
author |
Colhoun, EA Kiernan, KW McConnell, A Quilty, PG Fink, D Murray-Wallace, CV Whitehead, J |
author_facet |
Colhoun, EA Kiernan, KW McConnell, A Quilty, PG Fink, D Murray-Wallace, CV Whitehead, J |
author_sort |
Colhoun, EA |
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 University Press |
publishDate |
2010 |
url |
http://apo.ansto.gov.au/dspace/handle/10238/3208 https://doi.org/10.1017/S0954102009990526 |
long_lat |
ENVELOPE(67.246,67.246,-71.427,-71.427) ENVELOPE(78.021,78.021,-68.574,-68.574) ENVELOPE(68.133,68.133,-70.819,-70.819) ENVELOPE(78.167,78.167,-68.700,-68.700) |
geographic |
Antarctic East Antarctica Ross Sea Vestfold Hills Prydz Bay East Antarctic Ice Sheet Vestfold Prince Charles Mountains Heidemann Valley Bardin Bluffs Sørsdal Glacier |
geographic_facet |
Antarctic East Antarctica Ross Sea Vestfold Hills Prydz Bay East Antarctic Ice Sheet Vestfold Prince Charles Mountains Heidemann Valley Bardin Bluffs Sørsdal Glacier |
genre |
Antarc* Antarctic Antarctic Science Antarctica East Antarctica Ice Sheet Prince Charles Mountains Prydz Bay Ross Sea Sørsdal Glacier |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica East Antarctica Ice Sheet Prince Charles Mountains Prydz Bay Ross Sea Sørsdal Glacier |
op_relation |
Colhoun, E. A., Kiernan, K. W., McConnell, A., Quilty, P. G., Fink, D., Murray-Wallace, C. V., et al. (2010). 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), 53-64. 0954-1020 http://dx.doi.org/10.1017/S0954102009990526 http://apo.ansto.gov.au/dspace/handle/10238/3208 |
op_doi |
https://doi.org/10.1017/S0954102009990526 |
container_title |
Antarctic Science |
container_volume |
22 |
container_issue |
01 |
container_start_page |
53 |
_version_ |
1766076159421841408 |