The Skytrain plate and tectonic evolution of southwest Gondwana since Jurassic times
Uncertainty about the structure of the Falkland Plateau Basin has long hindered understanding of tectonic evolution in southwest Gondwana. New aeromagnetic data from the basin reveal Jurassic-onset seafloor spreading by motion of a single newly-recognized plate, Skytrain, which also governed contine...
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ftpubmed:oai:pubmedcentral.nih.gov:7672057 2023-05-15T13:42:05+02:00 The Skytrain plate and tectonic evolution of southwest Gondwana since Jurassic times Eagles, Graeme Eisermann, Hannes 2020-11-17 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7672057/ https://doi.org/10.1038/s41598-020-77070-6 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7672057/ http://dx.doi.org/10.1038/s41598-020-77070-6 © The Author(s) 2020 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Sci Rep Article Text 2020 ftpubmed https://doi.org/10.1038/s41598-020-77070-6 2020-11-22T01:44:19Z Uncertainty about the structure of the Falkland Plateau Basin has long hindered understanding of tectonic evolution in southwest Gondwana. New aeromagnetic data from the basin reveal Jurassic-onset seafloor spreading by motion of a single newly-recognized plate, Skytrain, which also governed continental extension in the Weddell Sea Embayment and possibly further afield in Antarctica. The Skytrain plate resolves a nearly century-old controversy by requiring a South American setting for the Falkland Islands in Gondwana. The Skytrain plate’s later motion provides a unifying context for post-Cambrian wide-angle paleomagnetic rotation, Cretaceous uplift, and post-Permian oblique collision in the Ellsworth Mountains of Antarctica. Further north, the Skytrain plate’s margins built a continuous conjugate ocean to the Weddell Sea in the Falkland Plateau Basin and central Scotia Sea. This ocean rules out venerable correlation-based interpretations for a Pacific margin location and subsequent long-distance translation of the South Georgia microcontinent as the Drake Passage gateway opened. Text Antarc* Antarctica Drake Passage Scotia Sea Weddell Sea PubMed Central (PMC) Drake Passage Ellsworth Mountains ENVELOPE(-85.000,-85.000,-78.750,-78.750) Falkland Plateau ENVELOPE(-50.000,-50.000,-51.000,-51.000) Pacific Scotia Sea Weddell Weddell Sea Scientific Reports 10 1 |
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Article Eagles, Graeme Eisermann, Hannes The Skytrain plate and tectonic evolution of southwest Gondwana since Jurassic times |
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Article |
description |
Uncertainty about the structure of the Falkland Plateau Basin has long hindered understanding of tectonic evolution in southwest Gondwana. New aeromagnetic data from the basin reveal Jurassic-onset seafloor spreading by motion of a single newly-recognized plate, Skytrain, which also governed continental extension in the Weddell Sea Embayment and possibly further afield in Antarctica. The Skytrain plate resolves a nearly century-old controversy by requiring a South American setting for the Falkland Islands in Gondwana. The Skytrain plate’s later motion provides a unifying context for post-Cambrian wide-angle paleomagnetic rotation, Cretaceous uplift, and post-Permian oblique collision in the Ellsworth Mountains of Antarctica. Further north, the Skytrain plate’s margins built a continuous conjugate ocean to the Weddell Sea in the Falkland Plateau Basin and central Scotia Sea. This ocean rules out venerable correlation-based interpretations for a Pacific margin location and subsequent long-distance translation of the South Georgia microcontinent as the Drake Passage gateway opened. |
format |
Text |
author |
Eagles, Graeme Eisermann, Hannes |
author_facet |
Eagles, Graeme Eisermann, Hannes |
author_sort |
Eagles, Graeme |
title |
The Skytrain plate and tectonic evolution of southwest Gondwana since Jurassic times |
title_short |
The Skytrain plate and tectonic evolution of southwest Gondwana since Jurassic times |
title_full |
The Skytrain plate and tectonic evolution of southwest Gondwana since Jurassic times |
title_fullStr |
The Skytrain plate and tectonic evolution of southwest Gondwana since Jurassic times |
title_full_unstemmed |
The Skytrain plate and tectonic evolution of southwest Gondwana since Jurassic times |
title_sort |
skytrain plate and tectonic evolution of southwest gondwana since jurassic times |
publisher |
Nature Publishing Group UK |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7672057/ https://doi.org/10.1038/s41598-020-77070-6 |
long_lat |
ENVELOPE(-85.000,-85.000,-78.750,-78.750) ENVELOPE(-50.000,-50.000,-51.000,-51.000) |
geographic |
Drake Passage Ellsworth Mountains Falkland Plateau Pacific Scotia Sea Weddell Weddell Sea |
geographic_facet |
Drake Passage Ellsworth Mountains Falkland Plateau Pacific Scotia Sea Weddell Weddell Sea |
genre |
Antarc* Antarctica Drake Passage Scotia Sea Weddell Sea |
genre_facet |
Antarc* Antarctica Drake Passage Scotia Sea Weddell Sea |
op_source |
Sci Rep |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7672057/ http://dx.doi.org/10.1038/s41598-020-77070-6 |
op_rights |
© The Author(s) 2020 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-020-77070-6 |
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