The Skytrain plate and tectonic evolution of southwest Gondwana since Jurassic times
Abstract 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 governe...
Published in: | Scientific Reports |
---|---|
Main Authors: | , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer Science and Business Media LLC
2020
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1038/s41598-020-77070-6 http://www.nature.com/articles/s41598-020-77070-6.pdf http://www.nature.com/articles/s41598-020-77070-6 |
id |
crspringernat:10.1038/s41598-020-77070-6 |
---|---|
record_format |
openpolar |
spelling |
crspringernat:10.1038/s41598-020-77070-6 2023-05-15T14:09:20+02:00 The Skytrain plate and tectonic evolution of southwest Gondwana since Jurassic times Eagles, Graeme Eisermann, Hannes Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research Projekt DEAL 2020 http://dx.doi.org/10.1038/s41598-020-77070-6 http://www.nature.com/articles/s41598-020-77070-6.pdf http://www.nature.com/articles/s41598-020-77070-6 en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Scientific Reports volume 10, issue 1 ISSN 2045-2322 Multidisciplinary journal-article 2020 crspringernat https://doi.org/10.1038/s41598-020-77070-6 2022-01-04T15:32:28Z Abstract 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. Article in Journal/Newspaper Antarc* Antarctica Drake Passage Scotia Sea Weddell Sea Springer Nature (via Crossref) 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 |
institution |
Open Polar |
collection |
Springer Nature (via Crossref) |
op_collection_id |
crspringernat |
language |
English |
topic |
Multidisciplinary |
spellingShingle |
Multidisciplinary Eagles, Graeme Eisermann, Hannes The Skytrain plate and tectonic evolution of southwest Gondwana since Jurassic times |
topic_facet |
Multidisciplinary |
description |
Abstract 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. |
author2 |
Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research Projekt DEAL |
format |
Article in Journal/Newspaper |
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 |
Springer Science and Business Media LLC |
publishDate |
2020 |
url |
http://dx.doi.org/10.1038/s41598-020-77070-6 http://www.nature.com/articles/s41598-020-77070-6.pdf http://www.nature.com/articles/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 |
Scientific Reports volume 10, issue 1 ISSN 2045-2322 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-020-77070-6 |
container_title |
Scientific Reports |
container_volume |
10 |
container_issue |
1 |
_version_ |
1766281350707412992 |