Late Cenozoic unification of East and West Antarctica
International audience 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 h...
Published in: | Nature Communications |
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ftccsdartic:oai:HAL:hal-02389973v1 2023-05-15T13:35:15+02:00 Late Cenozoic unification of East and West Antarctica Granot, Roi Dyment, Jerôme Domaines Océaniques (LDO) Centre National de la Recherche Scientifique (CNRS)-Institut d'écologie et environnement-Observatoire des Sciences de l'Univers-Université de Brest (UBO)-Institut national des sciences de l'Univers (INSU - CNRS) 2018-12 https://hal.archives-ouvertes.fr/hal-02389973 https://hal.archives-ouvertes.fr/hal-02389973/document https://hal.archives-ouvertes.fr/hal-02389973/file/s41467-018-05270-w.pdf https://doi.org/10.1038/s41467-018-05270-w en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-018-05270-w hal-02389973 https://hal.archives-ouvertes.fr/hal-02389973 https://hal.archives-ouvertes.fr/hal-02389973/document https://hal.archives-ouvertes.fr/hal-02389973/file/s41467-018-05270-w.pdf doi:10.1038/s41467-018-05270-w http://creativecommons.org/licenses/by-nd/ info:eu-repo/semantics/OpenAccess CC-BY-ND ISSN: 2041-1723 EISSN: 2041-1723 Nature Communications https://hal.archives-ouvertes.fr/hal-02389973 Nature Communications, Nature Publishing Group, 2018, 9 (1), ⟨10.1038/s41467-018-05270-w⟩ [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics info:eu-repo/semantics/article Journal articles 2018 ftccsdartic https://doi.org/10.1038/s41467-018-05270-w 2021-11-07T00:24:15Z International audience 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. Article in Journal/Newspaper Antarc* Antarctic Antarctica West Antarctica Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic Pacific The Antarctic Transantarctic Mountains West Antarctica Nature Communications 9 1 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics |
spellingShingle |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics Granot, Roi Dyment, Jerôme Late Cenozoic unification of East and West Antarctica |
topic_facet |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics |
description |
International audience 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. |
author2 |
Domaines Océaniques (LDO) Centre National de la Recherche Scientifique (CNRS)-Institut d'écologie et environnement-Observatoire des Sciences de l'Univers-Université de Brest (UBO)-Institut national des sciences de l'Univers (INSU - CNRS) |
format |
Article in Journal/Newspaper |
author |
Granot, Roi Dyment, Jerôme |
author_facet |
Granot, Roi Dyment, Jerôme |
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 |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.archives-ouvertes.fr/hal-02389973 https://hal.archives-ouvertes.fr/hal-02389973/document https://hal.archives-ouvertes.fr/hal-02389973/file/s41467-018-05270-w.pdf 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_source |
ISSN: 2041-1723 EISSN: 2041-1723 Nature Communications https://hal.archives-ouvertes.fr/hal-02389973 Nature Communications, Nature Publishing Group, 2018, 9 (1), ⟨10.1038/s41467-018-05270-w⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-018-05270-w hal-02389973 https://hal.archives-ouvertes.fr/hal-02389973 https://hal.archives-ouvertes.fr/hal-02389973/document https://hal.archives-ouvertes.fr/hal-02389973/file/s41467-018-05270-w.pdf doi:10.1038/s41467-018-05270-w |
op_rights |
http://creativecommons.org/licenses/by-nd/ info:eu-repo/semantics/OpenAccess |
op_rightsnorm |
CC-BY-ND |
op_doi |
https://doi.org/10.1038/s41467-018-05270-w |
container_title |
Nature Communications |
container_volume |
9 |
container_issue |
1 |
_version_ |
1766063532633227264 |