Crustal block origins of the South Scotia Ridge
The Cenozoic development of the Scotia Sea and opening of Drake Passage evolved in a complex tectonic setting with sea-floor spreading accompanied by the dispersal of continental fragments and the creation of rifted oceanic basins. The post-Eocene tectonic setting of the Scotia Sea is relatively wel...
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ftucl:oai:eprints.ucl.ac.uk.OAI2:10153948 2023-12-24T10:10:33+01:00 Crustal block origins of the South Scotia Ridge Riley, Teal R Carter, Andrew Burton-Johnson, Alex Leat, Philip T Hogan, Kelly A Bown, Paul R 2022-07-31 text https://discovery.ucl.ac.uk/id/eprint/10153948/1/Terra%20Nova%20-%202022%20-%20Riley.pdf https://discovery.ucl.ac.uk/id/eprint/10153948/ eng eng WILEY https://discovery.ucl.ac.uk/id/eprint/10153948/1/Terra%20Nova%20-%202022%20-%20Riley.pdf https://discovery.ucl.ac.uk/id/eprint/10153948/ open Terra Nova (2022) (In press). Article 2022 ftucl 2023-11-27T13:07:32Z The Cenozoic development of the Scotia Sea and opening of Drake Passage evolved in a complex tectonic setting with sea-floor spreading accompanied by the dispersal of continental fragments and the creation of rifted oceanic basins. The post-Eocene tectonic setting of the Scotia Sea is relatively well established, but Late Mesozoic palaeo-locations of many continental fragments prior to dispersal are largely unknown, with almost no geological control on the submerged banks. Detrital zircon analysis of dredged metasedimentary rocks of Bruce Bank from the South Scotia Ridge demonstrates a geological continuity with the South Orkney microcontinent (SOM) and also a clear geological affinity with the Trinity Peninsula Group metasedimentary rocks of the Antarctic Peninsula and components of the Cordillera Darwin Metamorphic Complex of Tierra del Fuego. Kinematic modelling indicates an Antarctic Plate origin for Bruce Bank and the SOM is the most plausible setting, prior to translation to the Scotia Plate during Scotia Sea opening. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Drake Passage Scotia Sea Tierra del Fuego University College London: UCL Discovery Antarctic The Antarctic Antarctic Peninsula Drake Passage Scotia Sea South Scotia Ridge ENVELOPE(-46.500,-46.500,-60.000,-60.000) Trinity Peninsula ENVELOPE(-58.000,-58.000,-63.500,-63.500) |
institution |
Open Polar |
collection |
University College London: UCL Discovery |
op_collection_id |
ftucl |
language |
English |
description |
The Cenozoic development of the Scotia Sea and opening of Drake Passage evolved in a complex tectonic setting with sea-floor spreading accompanied by the dispersal of continental fragments and the creation of rifted oceanic basins. The post-Eocene tectonic setting of the Scotia Sea is relatively well established, but Late Mesozoic palaeo-locations of many continental fragments prior to dispersal are largely unknown, with almost no geological control on the submerged banks. Detrital zircon analysis of dredged metasedimentary rocks of Bruce Bank from the South Scotia Ridge demonstrates a geological continuity with the South Orkney microcontinent (SOM) and also a clear geological affinity with the Trinity Peninsula Group metasedimentary rocks of the Antarctic Peninsula and components of the Cordillera Darwin Metamorphic Complex of Tierra del Fuego. Kinematic modelling indicates an Antarctic Plate origin for Bruce Bank and the SOM is the most plausible setting, prior to translation to the Scotia Plate during Scotia Sea opening. |
format |
Article in Journal/Newspaper |
author |
Riley, Teal R Carter, Andrew Burton-Johnson, Alex Leat, Philip T Hogan, Kelly A Bown, Paul R |
spellingShingle |
Riley, Teal R Carter, Andrew Burton-Johnson, Alex Leat, Philip T Hogan, Kelly A Bown, Paul R Crustal block origins of the South Scotia Ridge |
author_facet |
Riley, Teal R Carter, Andrew Burton-Johnson, Alex Leat, Philip T Hogan, Kelly A Bown, Paul R |
author_sort |
Riley, Teal R |
title |
Crustal block origins of the South Scotia Ridge |
title_short |
Crustal block origins of the South Scotia Ridge |
title_full |
Crustal block origins of the South Scotia Ridge |
title_fullStr |
Crustal block origins of the South Scotia Ridge |
title_full_unstemmed |
Crustal block origins of the South Scotia Ridge |
title_sort |
crustal block origins of the south scotia ridge |
publisher |
WILEY |
publishDate |
2022 |
url |
https://discovery.ucl.ac.uk/id/eprint/10153948/1/Terra%20Nova%20-%202022%20-%20Riley.pdf https://discovery.ucl.ac.uk/id/eprint/10153948/ |
long_lat |
ENVELOPE(-46.500,-46.500,-60.000,-60.000) ENVELOPE(-58.000,-58.000,-63.500,-63.500) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Drake Passage Scotia Sea South Scotia Ridge Trinity Peninsula |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Drake Passage Scotia Sea South Scotia Ridge Trinity Peninsula |
genre |
Antarc* Antarctic Antarctic Peninsula Drake Passage Scotia Sea Tierra del Fuego |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Drake Passage Scotia Sea Tierra del Fuego |
op_source |
Terra Nova (2022) (In press). |
op_relation |
https://discovery.ucl.ac.uk/id/eprint/10153948/1/Terra%20Nova%20-%202022%20-%20Riley.pdf https://discovery.ucl.ac.uk/id/eprint/10153948/ |
op_rights |
open |
_version_ |
1786217351461470208 |