Records of past ice sheet fluctuations in interior East Antarctica
Abstract The results of a land-based multi-disciplinary study of the past ice surface elevation in the Grove Mountains of interior East Antarctica support a dynamic evolution of the East Antarctic Ice Sheet (EAIS). Moraine boulders of sedimentary rocks and spore pollen assemblage imply a significant...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.553.1196 2023-05-15T14:01:16+02:00 Records of past ice sheet fluctuations in interior East Antarctica The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.553.1196 http://pubs.usgs.gov/of/2007/1047/srp/srp106/of2007-1047srp106.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.553.1196 http://pubs.usgs.gov/of/2007/1047/srp/srp106/of2007-1047srp106.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://pubs.usgs.gov/of/2007/1047/srp/srp106/of2007-1047srp106.pdf text ftciteseerx 2016-01-08T11:38:59Z Abstract The results of a land-based multi-disciplinary study of the past ice surface elevation in the Grove Mountains of interior East Antarctica support a dynamic evolution of the East Antarctic Ice Sheet (EAIS). Moraine boulders of sedimentary rocks and spore pollen assemblage imply a significant shrinkage of the EAIS, with its margin retreating south of the Grove Mountains (~450 km south of recent coast line) before the middle Pliocene. The exposure ages indicate that the ice sheet subsequently re-advanced, with the ice surface rising locally at least 450 m higher than today. It then went back down constantly from before 2.3 Ma to 1.6 Ma. The glacial topography and existence of soil show that the ice surface fluctuation continued since the early Quaternary, but with highest levels never exceeding ~100 m higher than today. Text Antarc* Antarctic Antarctica East Antarctica Ice Sheet Unknown Antarctic East Antarctic Ice Sheet East Antarctica Grove Mountains ENVELOPE(75.000,75.000,-72.750,-72.750) |
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Unknown |
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ftciteseerx |
language |
English |
description |
Abstract The results of a land-based multi-disciplinary study of the past ice surface elevation in the Grove Mountains of interior East Antarctica support a dynamic evolution of the East Antarctic Ice Sheet (EAIS). Moraine boulders of sedimentary rocks and spore pollen assemblage imply a significant shrinkage of the EAIS, with its margin retreating south of the Grove Mountains (~450 km south of recent coast line) before the middle Pliocene. The exposure ages indicate that the ice sheet subsequently re-advanced, with the ice surface rising locally at least 450 m higher than today. It then went back down constantly from before 2.3 Ma to 1.6 Ma. The glacial topography and existence of soil show that the ice surface fluctuation continued since the early Quaternary, but with highest levels never exceeding ~100 m higher than today. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
title |
Records of past ice sheet fluctuations in interior East Antarctica |
spellingShingle |
Records of past ice sheet fluctuations in interior East Antarctica |
title_short |
Records of past ice sheet fluctuations in interior East Antarctica |
title_full |
Records of past ice sheet fluctuations in interior East Antarctica |
title_fullStr |
Records of past ice sheet fluctuations in interior East Antarctica |
title_full_unstemmed |
Records of past ice sheet fluctuations in interior East Antarctica |
title_sort |
records of past ice sheet fluctuations in interior east antarctica |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.553.1196 http://pubs.usgs.gov/of/2007/1047/srp/srp106/of2007-1047srp106.pdf |
long_lat |
ENVELOPE(75.000,75.000,-72.750,-72.750) |
geographic |
Antarctic East Antarctic Ice Sheet East Antarctica Grove Mountains |
geographic_facet |
Antarctic East Antarctic Ice Sheet East Antarctica Grove Mountains |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet |
op_source |
http://pubs.usgs.gov/of/2007/1047/srp/srp106/of2007-1047srp106.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.553.1196 http://pubs.usgs.gov/of/2007/1047/srp/srp106/of2007-1047srp106.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766270860043223040 |