Pliocene Paleoclimate and East Antarctic Ice-Sheet History from Surficial Ash Deposits
The preservation, age, and stratigraphic relation of an in situ ashfall layer with an underlying desert pavement in Arena Valley, southern Victoria Land, indicate that a cold-desert climate has persisted in Arena Valley during the past 4.3 million years. These data indicate that the present East Ant...
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American Association for the Advancement of Science (AAAS)
1993
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Online Access: | http://dx.doi.org/10.1126/science.260.5108.667 https://www.science.org/doi/pdf/10.1126/science.260.5108.667 |
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craaas:10.1126/science.260.5108.667 2024-04-28T07:58:07+00:00 Pliocene Paleoclimate and East Antarctic Ice-Sheet History from Surficial Ash Deposits Marchant, David R. Swisher, Carl C. Lux, Daniel R. West, David P. Denton, George H. 1993 http://dx.doi.org/10.1126/science.260.5108.667 https://www.science.org/doi/pdf/10.1126/science.260.5108.667 en eng American Association for the Advancement of Science (AAAS) Science volume 260, issue 5108, page 667-670 ISSN 0036-8075 1095-9203 Multidisciplinary journal-article 1993 craaas https://doi.org/10.1126/science.260.5108.667 2024-04-09T06:40:50Z The preservation, age, and stratigraphic relation of an in situ ashfall layer with an underlying desert pavement in Arena Valley, southern Victoria Land, indicate that a cold-desert climate has persisted in Arena Valley during the past 4.3 million years. These data indicate that the present East Antarctic Ice Sheet has endured for this time and that average temperatures during the Pliocene in Arena Valley were no greater than 3°C above present values. One implication is that the collapse of the East Antarctic Ice Sheet due to greenhouse warming is unlikely, even if global atmospheric temperatures rise to levels last experienced during mid-Pliocene times. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Victoria Land AAAS Resource Center (American Association for the Advancement of Science) Science 260 5108 667 670 |
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Open Polar |
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AAAS Resource Center (American Association for the Advancement of Science) |
op_collection_id |
craaas |
language |
English |
topic |
Multidisciplinary |
spellingShingle |
Multidisciplinary Marchant, David R. Swisher, Carl C. Lux, Daniel R. West, David P. Denton, George H. Pliocene Paleoclimate and East Antarctic Ice-Sheet History from Surficial Ash Deposits |
topic_facet |
Multidisciplinary |
description |
The preservation, age, and stratigraphic relation of an in situ ashfall layer with an underlying desert pavement in Arena Valley, southern Victoria Land, indicate that a cold-desert climate has persisted in Arena Valley during the past 4.3 million years. These data indicate that the present East Antarctic Ice Sheet has endured for this time and that average temperatures during the Pliocene in Arena Valley were no greater than 3°C above present values. One implication is that the collapse of the East Antarctic Ice Sheet due to greenhouse warming is unlikely, even if global atmospheric temperatures rise to levels last experienced during mid-Pliocene times. |
format |
Article in Journal/Newspaper |
author |
Marchant, David R. Swisher, Carl C. Lux, Daniel R. West, David P. Denton, George H. |
author_facet |
Marchant, David R. Swisher, Carl C. Lux, Daniel R. West, David P. Denton, George H. |
author_sort |
Marchant, David R. |
title |
Pliocene Paleoclimate and East Antarctic Ice-Sheet History from Surficial Ash Deposits |
title_short |
Pliocene Paleoclimate and East Antarctic Ice-Sheet History from Surficial Ash Deposits |
title_full |
Pliocene Paleoclimate and East Antarctic Ice-Sheet History from Surficial Ash Deposits |
title_fullStr |
Pliocene Paleoclimate and East Antarctic Ice-Sheet History from Surficial Ash Deposits |
title_full_unstemmed |
Pliocene Paleoclimate and East Antarctic Ice-Sheet History from Surficial Ash Deposits |
title_sort |
pliocene paleoclimate and east antarctic ice-sheet history from surficial ash deposits |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
1993 |
url |
http://dx.doi.org/10.1126/science.260.5108.667 https://www.science.org/doi/pdf/10.1126/science.260.5108.667 |
genre |
Antarc* Antarctic Ice Sheet Victoria Land |
genre_facet |
Antarc* Antarctic Ice Sheet Victoria Land |
op_source |
Science volume 260, issue 5108, page 667-670 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.260.5108.667 |
container_title |
Science |
container_volume |
260 |
container_issue |
5108 |
container_start_page |
667 |
op_container_end_page |
670 |
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1797567683140517888 |