Multiple Early to Mid-Pleistocene East Antarctic Ice Sheet variations in the Ricker Hills (Victoria Land, Antarctica)
Timing and amplitude of Antarctic ice level changes as response to past climate fluctuations are a major issue in paleoclimatology. In this study, we determined surface exposure ages with in situ produced cosmogenic nuclides (10Be, 21Ne) of four erratic boulders from a pre-last glacial deposit in th...
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U.S. Geological Survey and The National Academiesedited by A. K. Cooper and C. R. Raymond et al.
2007
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ftunivpisairis:oai:arpi.unipi.it:11568/202334 2024-04-14T08:02:30+00:00 Multiple Early to Mid-Pleistocene East Antarctic Ice Sheet variations in the Ricker Hills (Victoria Land, Antarctica) STRASKY S DI NICOLA L BAUR H KUBIK P. W SCHLUECHTER C WIELER R. BARONI, CARLO SALVATORE, MARIA CRISTINA A.K. Cooper and C.R. Raymond and the 10th ISAES Editorial Team Strasky, S DI NICOLA, L Baroni, Carlo Salvatore, MARIA CRISTINA Baur, H Kubik, P. W. Schluechter, C Wieler, R. 2007 ELETTRONICO http://hdl.handle.net/11568/202334 https://doi.org/10.3133/of2007-1047 http://://pubs.usgs.gov/of/2007/1047/ eng eng U.S. Geological Survey and The National Academiesedited by A. K. Cooper and C. R. Raymond et al. country:USA place:DENVER ispartofbook:Antarctica: A Keystone in a Changing World – Online Proceedings of the 10th ISAES. 10th ISAES volume:1047 firstpage:1 lastpage:5 numberofpages:5 alleditors:A.K. Cooper and C.R. Raymond and the 10th ISAES Editorial Team http://hdl.handle.net/11568/202334 doi:10.3133/of2007-1047 http://://pubs.usgs.gov/of/2007/1047/ Surface exposure dating Noble Gase Victoria Land landscape analysi East Antarctic Ice Sheet info:eu-repo/semantics/conferenceObject 2007 ftunivpisairis https://doi.org/10.3133/of2007-1047 2024-03-21T18:39:42Z Timing and amplitude of Antarctic ice level changes as response to past climate fluctuations are a major issue in paleoclimatology. In this study, we determined surface exposure ages with in situ produced cosmogenic nuclides (10Be, 21Ne) of four erratic boulders from a pre-last glacial deposit in the Ricker Hills, southern Victoria Land, located at the boundary of the East Antarctic Ice Sheet. The investigated area is not affected by alpine glaciers. Thus its glacial features and deposits are a direct proof of past ice sheet variations. Consistent neon and beryllium exposure ages indicate two major ice advances, one at about 1.4 Ma and another one around 1.0 Ma before present. Evidence for a third glacial event comes from an erratic boulder that was intermittently buried by cold-based ice. From our data we infer an upper age limit for this third event at around 665 ka. Conference Object Antarc* Antarctic Antarctica Ice Sheet Victoria Land ARPI - Archivio della Ricerca dell'Università di Pisa Antarctic East Antarctic Ice Sheet Ricker Hills ENVELOPE(159.167,159.167,-75.683,-75.683) Victoria Land |
institution |
Open Polar |
collection |
ARPI - Archivio della Ricerca dell'Università di Pisa |
op_collection_id |
ftunivpisairis |
language |
English |
topic |
Surface exposure dating Noble Gase Victoria Land landscape analysi East Antarctic Ice Sheet |
spellingShingle |
Surface exposure dating Noble Gase Victoria Land landscape analysi East Antarctic Ice Sheet STRASKY S DI NICOLA L BAUR H KUBIK P. W SCHLUECHTER C WIELER R. BARONI, CARLO SALVATORE, MARIA CRISTINA Multiple Early to Mid-Pleistocene East Antarctic Ice Sheet variations in the Ricker Hills (Victoria Land, Antarctica) |
topic_facet |
Surface exposure dating Noble Gase Victoria Land landscape analysi East Antarctic Ice Sheet |
description |
Timing and amplitude of Antarctic ice level changes as response to past climate fluctuations are a major issue in paleoclimatology. In this study, we determined surface exposure ages with in situ produced cosmogenic nuclides (10Be, 21Ne) of four erratic boulders from a pre-last glacial deposit in the Ricker Hills, southern Victoria Land, located at the boundary of the East Antarctic Ice Sheet. The investigated area is not affected by alpine glaciers. Thus its glacial features and deposits are a direct proof of past ice sheet variations. Consistent neon and beryllium exposure ages indicate two major ice advances, one at about 1.4 Ma and another one around 1.0 Ma before present. Evidence for a third glacial event comes from an erratic boulder that was intermittently buried by cold-based ice. From our data we infer an upper age limit for this third event at around 665 ka. |
author2 |
A.K. Cooper and C.R. Raymond and the 10th ISAES Editorial Team Strasky, S DI NICOLA, L Baroni, Carlo Salvatore, MARIA CRISTINA Baur, H Kubik, P. W. Schluechter, C Wieler, R. |
format |
Conference Object |
author |
STRASKY S DI NICOLA L BAUR H KUBIK P. W SCHLUECHTER C WIELER R. BARONI, CARLO SALVATORE, MARIA CRISTINA |
author_facet |
STRASKY S DI NICOLA L BAUR H KUBIK P. W SCHLUECHTER C WIELER R. BARONI, CARLO SALVATORE, MARIA CRISTINA |
author_sort |
STRASKY S |
title |
Multiple Early to Mid-Pleistocene East Antarctic Ice Sheet variations in the Ricker Hills (Victoria Land, Antarctica) |
title_short |
Multiple Early to Mid-Pleistocene East Antarctic Ice Sheet variations in the Ricker Hills (Victoria Land, Antarctica) |
title_full |
Multiple Early to Mid-Pleistocene East Antarctic Ice Sheet variations in the Ricker Hills (Victoria Land, Antarctica) |
title_fullStr |
Multiple Early to Mid-Pleistocene East Antarctic Ice Sheet variations in the Ricker Hills (Victoria Land, Antarctica) |
title_full_unstemmed |
Multiple Early to Mid-Pleistocene East Antarctic Ice Sheet variations in the Ricker Hills (Victoria Land, Antarctica) |
title_sort |
multiple early to mid-pleistocene east antarctic ice sheet variations in the ricker hills (victoria land, antarctica) |
publisher |
U.S. Geological Survey and The National Academiesedited by A. K. Cooper and C. R. Raymond et al. |
publishDate |
2007 |
url |
http://hdl.handle.net/11568/202334 https://doi.org/10.3133/of2007-1047 http://://pubs.usgs.gov/of/2007/1047/ |
long_lat |
ENVELOPE(159.167,159.167,-75.683,-75.683) |
geographic |
Antarctic East Antarctic Ice Sheet Ricker Hills Victoria Land |
geographic_facet |
Antarctic East Antarctic Ice Sheet Ricker Hills Victoria Land |
genre |
Antarc* Antarctic Antarctica Ice Sheet Victoria Land |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Victoria Land |
op_relation |
ispartofbook:Antarctica: A Keystone in a Changing World – Online Proceedings of the 10th ISAES. 10th ISAES volume:1047 firstpage:1 lastpage:5 numberofpages:5 alleditors:A.K. Cooper and C.R. Raymond and the 10th ISAES Editorial Team http://hdl.handle.net/11568/202334 doi:10.3133/of2007-1047 http://://pubs.usgs.gov/of/2007/1047/ |
op_doi |
https://doi.org/10.3133/of2007-1047 |
_version_ |
1796315339023187968 |