Granulometry, geochemistry, amino acids, radiocarbon ages and paleomagnetics of samples from Heidemann Valley
A Pliocene (2.6-3.5 Ma) age is determined from glacial sediments studied in a 20m 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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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.808548 2023-05-15T13:42:11+02:00 Granulometry, geochemistry, amino acids, radiocarbon ages and paleomagnetics of samples from Heidemann Valley Colhoun, Eric A Kiernan, Kevin W McConnell, Anne Quilty, Patrick G Fink, David Murray-Wallace, Colin V Whitehead, Jason M LATITUDE: -68.578000 * LONGITUDE: 77.994000 2010-03-06 application/zip, 6 datasets https://doi.pangaea.de/10.1594/PANGAEA.808548 https://doi.org/10.1594/PANGAEA.808548 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.808548 https://doi.org/10.1594/PANGAEA.808548 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Colhoun, Eric A; Kiernan, Kevin W; McConnell, Anne; Quilty, Patrick G; Fink, David; Murray-Wallace, Colin V; Whitehead, Jason M (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, https://doi.org/10.1017/S0954102009990526 EXC Excavation Heidemann_VT Heidemann Valley Vestfold Hills Antarctica International Polar Year (2007-2008) IPY Dataset 2010 ftpangaea https://doi.org/10.1594/PANGAEA.808548 https://doi.org/10.1017/S0954102009990526 2023-01-20T07:32:55Z A Pliocene (2.6-3.5 Ma) age is determined from glacial sediments studied in a 20m 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 Sorsdal 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. Dataset Antarc* Antarctic Antarctic Science Antarctica East Antarctica Ice Sheet International Polar Year IPY Prince Charles Mountains Prydz Bay Ross Sea PANGAEA - Data Publisher for Earth & Environmental Science 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) Sorsdal Glacier ENVELOPE(78.167,78.167,-68.700,-68.700) ENVELOPE(77.994000,77.994000,-68.578000,-68.578000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
EXC Excavation Heidemann_VT Heidemann Valley Vestfold Hills Antarctica International Polar Year (2007-2008) IPY |
spellingShingle |
EXC Excavation Heidemann_VT Heidemann Valley Vestfold Hills Antarctica International Polar Year (2007-2008) IPY Colhoun, Eric A Kiernan, Kevin W McConnell, Anne Quilty, Patrick G Fink, David Murray-Wallace, Colin V Whitehead, Jason M Granulometry, geochemistry, amino acids, radiocarbon ages and paleomagnetics of samples from Heidemann Valley |
topic_facet |
EXC Excavation Heidemann_VT Heidemann Valley Vestfold Hills Antarctica International Polar Year (2007-2008) IPY |
description |
A Pliocene (2.6-3.5 Ma) age is determined from glacial sediments studied in a 20m 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 Sorsdal 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 |
Dataset |
author |
Colhoun, Eric A Kiernan, Kevin W McConnell, Anne Quilty, Patrick G Fink, David Murray-Wallace, Colin V Whitehead, Jason M |
author_facet |
Colhoun, Eric A Kiernan, Kevin W McConnell, Anne Quilty, Patrick G Fink, David Murray-Wallace, Colin V Whitehead, Jason M |
author_sort |
Colhoun, Eric A |
title |
Granulometry, geochemistry, amino acids, radiocarbon ages and paleomagnetics of samples from Heidemann Valley |
title_short |
Granulometry, geochemistry, amino acids, radiocarbon ages and paleomagnetics of samples from Heidemann Valley |
title_full |
Granulometry, geochemistry, amino acids, radiocarbon ages and paleomagnetics of samples from Heidemann Valley |
title_fullStr |
Granulometry, geochemistry, amino acids, radiocarbon ages and paleomagnetics of samples from Heidemann Valley |
title_full_unstemmed |
Granulometry, geochemistry, amino acids, radiocarbon ages and paleomagnetics of samples from Heidemann Valley |
title_sort |
granulometry, geochemistry, amino acids, radiocarbon ages and paleomagnetics of samples from heidemann valley |
publisher |
PANGAEA |
publishDate |
2010 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.808548 https://doi.org/10.1594/PANGAEA.808548 |
op_coverage |
LATITUDE: -68.578000 * LONGITUDE: 77.994000 |
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) ENVELOPE(77.994000,77.994000,-68.578000,-68.578000) |
geographic |
Antarctic East Antarctica Ross Sea Vestfold Hills Prydz Bay East Antarctic Ice Sheet Vestfold Prince Charles Mountains Heidemann Valley Bardin Bluffs Sorsdal Glacier |
geographic_facet |
Antarctic East Antarctica Ross Sea Vestfold Hills Prydz Bay East Antarctic Ice Sheet Vestfold Prince Charles Mountains Heidemann Valley Bardin Bluffs Sorsdal Glacier |
genre |
Antarc* Antarctic Antarctic Science Antarctica East Antarctica Ice Sheet International Polar Year IPY Prince Charles Mountains Prydz Bay Ross Sea |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica East Antarctica Ice Sheet International Polar Year IPY Prince Charles Mountains Prydz Bay Ross Sea |
op_source |
Supplement to: Colhoun, Eric A; Kiernan, Kevin W; McConnell, Anne; Quilty, Patrick G; Fink, David; Murray-Wallace, Colin V; Whitehead, Jason M (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, https://doi.org/10.1017/S0954102009990526 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.808548 https://doi.org/10.1594/PANGAEA.808548 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.808548 https://doi.org/10.1017/S0954102009990526 |
_version_ |
1766164422093438976 |