Late Miocene ice sheet elevation in the Grove Mountains, East Antarctica, inferred from cosmogenic Ne-21-Be-10-Al-26.
The Grove Mountains, lying in the interior of East Antarctica, consist of 64 nunataks. Geomorphic characteristics of the nunataks suggest that past ice sheet elevations have overtopped the summits of the Grove Mountains. Cosmogenic 21Ne, 10Be and 26Al dating yields surface exposure ages of five bedr...
Published in: | Global and Planetary Change |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2010
|
Subjects: | |
Online Access: | http://apo.ansto.gov.au/dspace/handle/10238/2042 https://doi.org/10.1016/j.gloplacha.2010.03.005 |
id |
ftansto:oai:apo-prod.ansto.gov.au:10238/2042 |
---|---|
record_format |
openpolar |
spelling |
ftansto:oai:apo-prod.ansto.gov.au:10238/2042 2023-05-15T13:36:16+02:00 Late Miocene ice sheet elevation in the Grove Mountains, East Antarctica, inferred from cosmogenic Ne-21-Be-10-Al-26. Kong, P Huang, FX Liu, XH Fink, D Ding, L Lai, QZ 2010-05 http://apo.ansto.gov.au/dspace/handle/10238/2042 https://doi.org/10.1016/j.gloplacha.2010.03.005 en eng Elsevier Kong, P., Huang, F. X., Liu, X. H., Fink, D., Ding, L., & Lai, Q. Z. (2010). Late Miocene ice sheet elevation in the Grove Mountains, East Antarctica, inferred from cosmogenic Ne-21-Be-10-Al-26. Global and Planetary Change, 72(1-2), 50-54. 0921-8181 http://dx.doi.org/10.1016/j.gloplacha.2010.03.005 http://apo.ansto.gov.au/dspace/handle/10238/2042 Antarctica Miocene Epoch Ice Age Estimation Moisture Levels Journal Article 2010 ftansto https://doi.org/10.1016/j.gloplacha.2010.03.005 2019-12-23T19:01:58Z The Grove Mountains, lying in the interior of East Antarctica, consist of 64 nunataks. Geomorphic characteristics of the nunataks suggest that past ice sheet elevations have overtopped the summits of the Grove Mountains. Cosmogenic 21Ne, 10Be and 26Al dating yields surface exposure ages of five bedrock samples taken from the crest of Mount Harding, a typical nunatak in the Grove Mountains. Using multi-nuclide fitting, we have calculated the time that the ice sheet retreated below the crest of Mount Harding; all data point to the late Miocene, ~ 6.3 Ma ago. The results provide the first land-based evidence of the elevation of the East Antarctic Ice Sheet in the Grove Mountains in Late Miocene, which reached 2300 m, 200 m higher than the current ice sheet level. The higher than current ice sheet elevations during the late Miocene together with contemporaneously higher temperatures in the Southern Ocean suggest that moisture transport plays an important role in ice sheet expansion in the interior of East Antarctica. © 2010, Elsevier Ltd. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Sheet Southern Ocean Australian Nuclear Science and Technology Organisation: ANSTO Publications Online Antarctic East Antarctic Ice Sheet East Antarctica Grove Mountains ENVELOPE(75.000,75.000,-72.750,-72.750) Harding ENVELOPE(75.033,75.033,-72.900,-72.900) Mount Harding ENVELOPE(75.023,75.023,-72.893,-72.893) Southern Ocean Global and Planetary Change 72 1-2 50 54 |
institution |
Open Polar |
collection |
Australian Nuclear Science and Technology Organisation: ANSTO Publications Online |
op_collection_id |
ftansto |
language |
English |
topic |
Antarctica Miocene Epoch Ice Age Estimation Moisture Levels |
spellingShingle |
Antarctica Miocene Epoch Ice Age Estimation Moisture Levels Kong, P Huang, FX Liu, XH Fink, D Ding, L Lai, QZ Late Miocene ice sheet elevation in the Grove Mountains, East Antarctica, inferred from cosmogenic Ne-21-Be-10-Al-26. |
topic_facet |
Antarctica Miocene Epoch Ice Age Estimation Moisture Levels |
description |
The Grove Mountains, lying in the interior of East Antarctica, consist of 64 nunataks. Geomorphic characteristics of the nunataks suggest that past ice sheet elevations have overtopped the summits of the Grove Mountains. Cosmogenic 21Ne, 10Be and 26Al dating yields surface exposure ages of five bedrock samples taken from the crest of Mount Harding, a typical nunatak in the Grove Mountains. Using multi-nuclide fitting, we have calculated the time that the ice sheet retreated below the crest of Mount Harding; all data point to the late Miocene, ~ 6.3 Ma ago. The results provide the first land-based evidence of the elevation of the East Antarctic Ice Sheet in the Grove Mountains in Late Miocene, which reached 2300 m, 200 m higher than the current ice sheet level. The higher than current ice sheet elevations during the late Miocene together with contemporaneously higher temperatures in the Southern Ocean suggest that moisture transport plays an important role in ice sheet expansion in the interior of East Antarctica. © 2010, Elsevier Ltd. |
format |
Article in Journal/Newspaper |
author |
Kong, P Huang, FX Liu, XH Fink, D Ding, L Lai, QZ |
author_facet |
Kong, P Huang, FX Liu, XH Fink, D Ding, L Lai, QZ |
author_sort |
Kong, P |
title |
Late Miocene ice sheet elevation in the Grove Mountains, East Antarctica, inferred from cosmogenic Ne-21-Be-10-Al-26. |
title_short |
Late Miocene ice sheet elevation in the Grove Mountains, East Antarctica, inferred from cosmogenic Ne-21-Be-10-Al-26. |
title_full |
Late Miocene ice sheet elevation in the Grove Mountains, East Antarctica, inferred from cosmogenic Ne-21-Be-10-Al-26. |
title_fullStr |
Late Miocene ice sheet elevation in the Grove Mountains, East Antarctica, inferred from cosmogenic Ne-21-Be-10-Al-26. |
title_full_unstemmed |
Late Miocene ice sheet elevation in the Grove Mountains, East Antarctica, inferred from cosmogenic Ne-21-Be-10-Al-26. |
title_sort |
late miocene ice sheet elevation in the grove mountains, east antarctica, inferred from cosmogenic ne-21-be-10-al-26. |
publisher |
Elsevier |
publishDate |
2010 |
url |
http://apo.ansto.gov.au/dspace/handle/10238/2042 https://doi.org/10.1016/j.gloplacha.2010.03.005 |
long_lat |
ENVELOPE(75.000,75.000,-72.750,-72.750) ENVELOPE(75.033,75.033,-72.900,-72.900) ENVELOPE(75.023,75.023,-72.893,-72.893) |
geographic |
Antarctic East Antarctic Ice Sheet East Antarctica Grove Mountains Harding Mount Harding Southern Ocean |
geographic_facet |
Antarctic East Antarctic Ice Sheet East Antarctica Grove Mountains Harding Mount Harding Southern Ocean |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Southern Ocean |
op_relation |
Kong, P., Huang, F. X., Liu, X. H., Fink, D., Ding, L., & Lai, Q. Z. (2010). Late Miocene ice sheet elevation in the Grove Mountains, East Antarctica, inferred from cosmogenic Ne-21-Be-10-Al-26. Global and Planetary Change, 72(1-2), 50-54. 0921-8181 http://dx.doi.org/10.1016/j.gloplacha.2010.03.005 http://apo.ansto.gov.au/dspace/handle/10238/2042 |
op_doi |
https://doi.org/10.1016/j.gloplacha.2010.03.005 |
container_title |
Global and Planetary Change |
container_volume |
72 |
container_issue |
1-2 |
container_start_page |
50 |
op_container_end_page |
54 |
_version_ |
1766076161247412224 |