Radiocarbon and thermoluminescence ages in the Mt. Riiser-Larsen area, Enderby Land, East Antarctica
Varved organic clay (Richardson Clay) and thin coatings of calcite attached to rocks within thick till deposits (Tula Till) in the Mt Riiser-Larsen area, East Antarctica, were dated by accelerator mass spectrometry (AMS) radiocarbon and thermolummescence (TL) dating AMS^<14>C ages corrected by...
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Department of Socio-geographical and Environmental Studies, Nara Women's University/National Institute of Polar Research/Research School of Earth Science, The Australian National University
1998
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ftnipr:oai:nipr.repo.nii.ac.jp:00003031 2023-05-15T13:49:00+02:00 Radiocarbon and thermoluminescence ages in the Mt. Riiser-Larsen area, Enderby Land, East Antarctica Takada,Masashi Miura,Hideki Zwartz,Daniel Peter 1998-10 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3031 http://id.nii.ac.jp/1291/00003031/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3031&item_no=1&attribute_id=18&file_no=1 en eng Department of Socio-geographical and Environmental Studies, Nara Women's University/National Institute of Polar Research/Research School of Earth Science, The Australian National University National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3031 http://id.nii.ac.jp/1291/00003031/ AA1130866X Polar geoscience, 11, 239-248(1998-10) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3031&item_no=1&attribute_id=18&file_no=1 AMS^<14>C age TL dating East Antarctica Richardson Clay till deposits Departmental Bulletin Paper P(論文) 1998 ftnipr 2022-11-26T19:42:23Z Varved organic clay (Richardson Clay) and thin coatings of calcite attached to rocks within thick till deposits (Tula Till) in the Mt Riiser-Larsen area, East Antarctica, were dated by accelerator mass spectrometry (AMS) radiocarbon and thermolummescence (TL) dating AMS^<14>C ages corrected by the δ^<13>C values m this study are 40250 ±1200 y BP for the varved organic clay and 42570 ± 670 y BP for the calcite samples Although there is a possibility that these ages might be too young due to contamination by younger carbon or other factors, it seems hard to regard the true age of crystallization of the calcite as much older than the Last Interglacial Stage from the provisional result of TL dating In East Antarctica, ice thickness and extent during the Last Glacial Stage is assumed to have been very much less than was earlier hypothesized, and the thick glacial deposits in the Mt Riiser-Larsen area have been supposed to be a correlative of the thick late-Pliocene deposits in the Transantarctic mountains and the Prince Charles mountains The result of this study, however, suggests that in a region like the Mt Riiser-Larsen area where ice comes mainly from the coastal area around the Napier mountains, the possibility of a re-advance of the ice sheet and/or deposition of thick glacial tills during the late-Pleistocene should be taken into account Report Antarc* Antarctica East Antarctica Enderby Land Ice Sheet Napier Mountains Polar geoscience Prince Charles Mountains National Institute of Polar Research Repository, Japan East Antarctica Transantarctic Mountains Tula ENVELOPE(-65.650,-65.650,-65.517,-65.517) Prince Charles Mountains ENVELOPE(67.246,67.246,-71.427,-71.427) Riiser-Larsen ENVELOPE(50.667,50.667,-66.783,-66.783) Napier ENVELOPE(-58.440,-58.440,-62.167,-62.167) Napier Mountains ENVELOPE(53.667,53.667,-66.500,-66.500) |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
AMS^<14>C age TL dating East Antarctica Richardson Clay till deposits |
spellingShingle |
AMS^<14>C age TL dating East Antarctica Richardson Clay till deposits Takada,Masashi Miura,Hideki Zwartz,Daniel Peter Radiocarbon and thermoluminescence ages in the Mt. Riiser-Larsen area, Enderby Land, East Antarctica |
topic_facet |
AMS^<14>C age TL dating East Antarctica Richardson Clay till deposits |
description |
Varved organic clay (Richardson Clay) and thin coatings of calcite attached to rocks within thick till deposits (Tula Till) in the Mt Riiser-Larsen area, East Antarctica, were dated by accelerator mass spectrometry (AMS) radiocarbon and thermolummescence (TL) dating AMS^<14>C ages corrected by the δ^<13>C values m this study are 40250 ±1200 y BP for the varved organic clay and 42570 ± 670 y BP for the calcite samples Although there is a possibility that these ages might be too young due to contamination by younger carbon or other factors, it seems hard to regard the true age of crystallization of the calcite as much older than the Last Interglacial Stage from the provisional result of TL dating In East Antarctica, ice thickness and extent during the Last Glacial Stage is assumed to have been very much less than was earlier hypothesized, and the thick glacial deposits in the Mt Riiser-Larsen area have been supposed to be a correlative of the thick late-Pliocene deposits in the Transantarctic mountains and the Prince Charles mountains The result of this study, however, suggests that in a region like the Mt Riiser-Larsen area where ice comes mainly from the coastal area around the Napier mountains, the possibility of a re-advance of the ice sheet and/or deposition of thick glacial tills during the late-Pleistocene should be taken into account |
format |
Report |
author |
Takada,Masashi Miura,Hideki Zwartz,Daniel Peter |
author_facet |
Takada,Masashi Miura,Hideki Zwartz,Daniel Peter |
author_sort |
Takada,Masashi |
title |
Radiocarbon and thermoluminescence ages in the Mt. Riiser-Larsen area, Enderby Land, East Antarctica |
title_short |
Radiocarbon and thermoluminescence ages in the Mt. Riiser-Larsen area, Enderby Land, East Antarctica |
title_full |
Radiocarbon and thermoluminescence ages in the Mt. Riiser-Larsen area, Enderby Land, East Antarctica |
title_fullStr |
Radiocarbon and thermoluminescence ages in the Mt. Riiser-Larsen area, Enderby Land, East Antarctica |
title_full_unstemmed |
Radiocarbon and thermoluminescence ages in the Mt. Riiser-Larsen area, Enderby Land, East Antarctica |
title_sort |
radiocarbon and thermoluminescence ages in the mt. riiser-larsen area, enderby land, east antarctica |
publisher |
Department of Socio-geographical and Environmental Studies, Nara Women's University/National Institute of Polar Research/Research School of Earth Science, The Australian National University |
publishDate |
1998 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3031 http://id.nii.ac.jp/1291/00003031/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3031&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(-65.650,-65.650,-65.517,-65.517) ENVELOPE(67.246,67.246,-71.427,-71.427) ENVELOPE(50.667,50.667,-66.783,-66.783) ENVELOPE(-58.440,-58.440,-62.167,-62.167) ENVELOPE(53.667,53.667,-66.500,-66.500) |
geographic |
East Antarctica Transantarctic Mountains Tula Prince Charles Mountains Riiser-Larsen Napier Napier Mountains |
geographic_facet |
East Antarctica Transantarctic Mountains Tula Prince Charles Mountains Riiser-Larsen Napier Napier Mountains |
genre |
Antarc* Antarctica East Antarctica Enderby Land Ice Sheet Napier Mountains Polar geoscience Prince Charles Mountains |
genre_facet |
Antarc* Antarctica East Antarctica Enderby Land Ice Sheet Napier Mountains Polar geoscience Prince Charles Mountains |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3031 http://id.nii.ac.jp/1291/00003031/ AA1130866X Polar geoscience, 11, 239-248(1998-10) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3031&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766250337808678912 |