Geophysical Investigations of the Tectonic Boundary Between East and West Antarctica
The Transantarctic Mountains (TAM), which separate the West Antarctic rift system from the stable shield of East Antarctica, are the largest mountains developed adjacent to a rift. The cause of uplift of mountains bordering rifts is poorly understood. One notion based on observations of troughs next...
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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.261.5117.45 https://www.science.org/doi/pdf/10.1126/science.261.5117.45 |
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craaas:10.1126/science.261.5117.45 2024-09-15T17:41:04+00:00 Geophysical Investigations of the Tectonic Boundary Between East and West Antarctica ten Brink, U. S. Bannister, S. Beaudoin, B. C. Stern, T. A. 1993 http://dx.doi.org/10.1126/science.261.5117.45 https://www.science.org/doi/pdf/10.1126/science.261.5117.45 en eng American Association for the Advancement of Science (AAAS) Science volume 261, issue 5117, page 45-50 ISSN 0036-8075 1095-9203 journal-article 1993 craaas https://doi.org/10.1126/science.261.5117.45 2024-07-25T04:01:26Z The Transantarctic Mountains (TAM), which separate the West Antarctic rift system from the stable shield of East Antarctica, are the largest mountains developed adjacent to a rift. The cause of uplift of mountains bordering rifts is poorly understood. One notion based on observations of troughs next to many uplifted blocks is that isostatic rebound produces a coeval uplift and subsidence. The results of an over-snow seismic experiment in Antarctica do not show evidence for a trough next to the TAM but indicate the extension of rifted mantle lithosphere under the TAM. Furthermore, stretching preceded the initiation of uplift, which suggests thermal buoyancy as the cause for uplift. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica West Antarctica AAAS Resource Center (American Association for the Advancement of Science) Science 261 5117 45 50 |
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Open Polar |
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AAAS Resource Center (American Association for the Advancement of Science) |
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craaas |
language |
English |
description |
The Transantarctic Mountains (TAM), which separate the West Antarctic rift system from the stable shield of East Antarctica, are the largest mountains developed adjacent to a rift. The cause of uplift of mountains bordering rifts is poorly understood. One notion based on observations of troughs next to many uplifted blocks is that isostatic rebound produces a coeval uplift and subsidence. The results of an over-snow seismic experiment in Antarctica do not show evidence for a trough next to the TAM but indicate the extension of rifted mantle lithosphere under the TAM. Furthermore, stretching preceded the initiation of uplift, which suggests thermal buoyancy as the cause for uplift. |
format |
Article in Journal/Newspaper |
author |
ten Brink, U. S. Bannister, S. Beaudoin, B. C. Stern, T. A. |
spellingShingle |
ten Brink, U. S. Bannister, S. Beaudoin, B. C. Stern, T. A. Geophysical Investigations of the Tectonic Boundary Between East and West Antarctica |
author_facet |
ten Brink, U. S. Bannister, S. Beaudoin, B. C. Stern, T. A. |
author_sort |
ten Brink, U. S. |
title |
Geophysical Investigations of the Tectonic Boundary Between East and West Antarctica |
title_short |
Geophysical Investigations of the Tectonic Boundary Between East and West Antarctica |
title_full |
Geophysical Investigations of the Tectonic Boundary Between East and West Antarctica |
title_fullStr |
Geophysical Investigations of the Tectonic Boundary Between East and West Antarctica |
title_full_unstemmed |
Geophysical Investigations of the Tectonic Boundary Between East and West Antarctica |
title_sort |
geophysical investigations of the tectonic boundary between east and west antarctica |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
1993 |
url |
http://dx.doi.org/10.1126/science.261.5117.45 https://www.science.org/doi/pdf/10.1126/science.261.5117.45 |
genre |
Antarc* Antarctic Antarctica East Antarctica West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica West Antarctica |
op_source |
Science volume 261, issue 5117, page 45-50 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.261.5117.45 |
container_title |
Science |
container_volume |
261 |
container_issue |
5117 |
container_start_page |
45 |
op_container_end_page |
50 |
_version_ |
1810487152560046080 |