Late Cenozoic unification of East and West Antarctica
The kinematic evolution of the West Antarctic rift system has important consequences for regional and global geodynamics. However, due to the lack of Neogene seafloor spreading at the plate boundary and despite being poorly resolved, East-West Antarctic motion was assumed to have ended abruptly at 2...
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ftpubmed:oai:pubmedcentral.nih.gov:6085322 2023-05-15T13:55:22+02:00 Late Cenozoic unification of East and West Antarctica Granot, Roi Dyment, Jérôme 2018-08-09 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6085322/ http://www.ncbi.nlm.nih.gov/pubmed/30093679 https://doi.org/10.1038/s41467-018-05270-w en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6085322/ http://www.ncbi.nlm.nih.gov/pubmed/30093679 http://dx.doi.org/10.1038/s41467-018-05270-w © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2018 ftpubmed https://doi.org/10.1038/s41467-018-05270-w 2018-08-19T00:19:36Z The kinematic evolution of the West Antarctic rift system has important consequences for regional and global geodynamics. However, due to the lack of Neogene seafloor spreading at the plate boundary and despite being poorly resolved, East-West Antarctic motion was assumed to have ended abruptly at 26 million years ago. Here we present marine magnetic data collected near the northern edge of the rift system showing that motion between East and West Antarctica lasted until the middle Neogene (~11 million years ago), long after the cessation of the known mid-Cenozoic pulse of motion. We calculate new rotation parameters for the early Neogene that provide the kinematic framework to understand the varied lithospheric settings of the Transantarctic Mountains and the tectono–volcanic activity within the rift. Incorporation of the Antarctic plate motion into the global plate circuit has major implications for the predicted Neogene motion of the Pacific Plate relative to the rest of the plates. Text Antarc* Antarctic Antarctica West Antarctica PubMed Central (PMC) Antarctic Pacific The Antarctic Transantarctic Mountains West Antarctica Nature Communications 9 1 |
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Article Granot, Roi Dyment, Jérôme Late Cenozoic unification of East and West Antarctica |
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The kinematic evolution of the West Antarctic rift system has important consequences for regional and global geodynamics. However, due to the lack of Neogene seafloor spreading at the plate boundary and despite being poorly resolved, East-West Antarctic motion was assumed to have ended abruptly at 26 million years ago. Here we present marine magnetic data collected near the northern edge of the rift system showing that motion between East and West Antarctica lasted until the middle Neogene (~11 million years ago), long after the cessation of the known mid-Cenozoic pulse of motion. We calculate new rotation parameters for the early Neogene that provide the kinematic framework to understand the varied lithospheric settings of the Transantarctic Mountains and the tectono–volcanic activity within the rift. Incorporation of the Antarctic plate motion into the global plate circuit has major implications for the predicted Neogene motion of the Pacific Plate relative to the rest of the plates. |
format |
Text |
author |
Granot, Roi Dyment, Jérôme |
author_facet |
Granot, Roi Dyment, Jérôme |
author_sort |
Granot, Roi |
title |
Late Cenozoic unification of East and West Antarctica |
title_short |
Late Cenozoic unification of East and West Antarctica |
title_full |
Late Cenozoic unification of East and West Antarctica |
title_fullStr |
Late Cenozoic unification of East and West Antarctica |
title_full_unstemmed |
Late Cenozoic unification of East and West Antarctica |
title_sort |
late cenozoic unification of east and west antarctica |
publisher |
Nature Publishing Group UK |
publishDate |
2018 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6085322/ http://www.ncbi.nlm.nih.gov/pubmed/30093679 https://doi.org/10.1038/s41467-018-05270-w |
geographic |
Antarctic Pacific The Antarctic Transantarctic Mountains West Antarctica |
geographic_facet |
Antarctic Pacific The Antarctic Transantarctic Mountains West Antarctica |
genre |
Antarc* Antarctic Antarctica West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica West Antarctica |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6085322/ http://www.ncbi.nlm.nih.gov/pubmed/30093679 http://dx.doi.org/10.1038/s41467-018-05270-w |
op_rights |
© The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
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CC-BY |
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https://doi.org/10.1038/s41467-018-05270-w |
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Nature Communications |
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9 |
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1 |
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