Cretaceous–Paleogene tectonic reconstructions of the South Scotia Ridge and implications for the initiation of subduction in the Scotia Sea ...
Abstract: The Cenozoic development of the Scotia Sea and opening of Drake Passage led to the dispersal of crustal blocks of the North and South Scotia ridges that today have a strong influence on the pathway of the Antarctic circumpolar current. The pre-translation positions of the crustal fragments...
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Geological Society of London
2023
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ftdatacite:10.6084/m9.figshare.c.6639909.v1 2023-06-11T04:06:27+02:00 Cretaceous–Paleogene tectonic reconstructions of the South Scotia Ridge and implications for the initiation of subduction in the Scotia Sea ... Riley, Teal R. Burton-Johnson, Alex Hogan, Kelly A. Carter, Andrew Leat, Philip T. 2023 https://dx.doi.org/10.6084/m9.figshare.c.6639909.v1 https://geolsoc.figshare.com/collections/Cretaceous_Paleogene_tectonic_reconstructions_of_the_South_Scotia_Ridge_and_implications_for_the_initiation_of_subduction_in_the_Scotia_Sea/6639909/1 unknown Geological Society of London https://dx.doi.org/10.1144/jgs2023-013 https://dx.doi.org/10.6084/m9.figshare.c.6639909 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 Geology FOS Earth and related environmental sciences Collection article 2023 ftdatacite https://doi.org/10.6084/m9.figshare.c.6639909.v110.1144/jgs2023-01310.6084/m9.figshare.c.6639909 2023-06-01T11:27:46Z Abstract: The Cenozoic development of the Scotia Sea and opening of Drake Passage led to the dispersal of crustal blocks of the North and South Scotia ridges that today have a strong influence on the pathway of the Antarctic circumpolar current. The pre-translation positions of the crustal fragments of the Scotia ridges are uncertain, with correlations to both the Antarctic and South American plates. We present direct geochronology ( 40 Ar/ 39 Ar) from Bruce and Jane banks of the South Scotia Ridge that yield Late Cretaceous–Paleogene ages indicating a pre-translation magmatic history. Basaltic magmatism from Bruce Bank is calc-alkaline, akin to Cenozoic magmatism of the South Orkney microcontinent and the South Shetlands Islands, and in agreement with pre-translation tectonic models that place the crustal blocks of the South Scotia Ridge adjacent to the northern Antarctic Peninsula arc. The intra-oceanic arc magmatism at Jane Bank is Late Cretaceous in age (97.2  ± 1.1 Ma), and is not consistent with ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Drake Passage Scotia Sea DataCite Metadata Store (German National Library of Science and Technology) Antarctic Antarctic Peninsula Drake Passage Scotia Sea South Scotia Ridge ENVELOPE(-46.500,-46.500,-60.000,-60.000) The Antarctic |
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DataCite Metadata Store (German National Library of Science and Technology) |
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unknown |
topic |
Geology FOS Earth and related environmental sciences |
spellingShingle |
Geology FOS Earth and related environmental sciences Riley, Teal R. Burton-Johnson, Alex Hogan, Kelly A. Carter, Andrew Leat, Philip T. Cretaceous–Paleogene tectonic reconstructions of the South Scotia Ridge and implications for the initiation of subduction in the Scotia Sea ... |
topic_facet |
Geology FOS Earth and related environmental sciences |
description |
Abstract: The Cenozoic development of the Scotia Sea and opening of Drake Passage led to the dispersal of crustal blocks of the North and South Scotia ridges that today have a strong influence on the pathway of the Antarctic circumpolar current. The pre-translation positions of the crustal fragments of the Scotia ridges are uncertain, with correlations to both the Antarctic and South American plates. We present direct geochronology ( 40 Ar/ 39 Ar) from Bruce and Jane banks of the South Scotia Ridge that yield Late Cretaceous–Paleogene ages indicating a pre-translation magmatic history. Basaltic magmatism from Bruce Bank is calc-alkaline, akin to Cenozoic magmatism of the South Orkney microcontinent and the South Shetlands Islands, and in agreement with pre-translation tectonic models that place the crustal blocks of the South Scotia Ridge adjacent to the northern Antarctic Peninsula arc. The intra-oceanic arc magmatism at Jane Bank is Late Cretaceous in age (97.2  ± 1.1 Ma), and is not consistent with ... |
format |
Article in Journal/Newspaper |
author |
Riley, Teal R. Burton-Johnson, Alex Hogan, Kelly A. Carter, Andrew Leat, Philip T. |
author_facet |
Riley, Teal R. Burton-Johnson, Alex Hogan, Kelly A. Carter, Andrew Leat, Philip T. |
author_sort |
Riley, Teal R. |
title |
Cretaceous–Paleogene tectonic reconstructions of the South Scotia Ridge and implications for the initiation of subduction in the Scotia Sea ... |
title_short |
Cretaceous–Paleogene tectonic reconstructions of the South Scotia Ridge and implications for the initiation of subduction in the Scotia Sea ... |
title_full |
Cretaceous–Paleogene tectonic reconstructions of the South Scotia Ridge and implications for the initiation of subduction in the Scotia Sea ... |
title_fullStr |
Cretaceous–Paleogene tectonic reconstructions of the South Scotia Ridge and implications for the initiation of subduction in the Scotia Sea ... |
title_full_unstemmed |
Cretaceous–Paleogene tectonic reconstructions of the South Scotia Ridge and implications for the initiation of subduction in the Scotia Sea ... |
title_sort |
cretaceous–paleogene tectonic reconstructions of the south scotia ridge and implications for the initiation of subduction in the scotia sea ... |
publisher |
Geological Society of London |
publishDate |
2023 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.6639909.v1 https://geolsoc.figshare.com/collections/Cretaceous_Paleogene_tectonic_reconstructions_of_the_South_Scotia_Ridge_and_implications_for_the_initiation_of_subduction_in_the_Scotia_Sea/6639909/1 |
long_lat |
ENVELOPE(-46.500,-46.500,-60.000,-60.000) |
geographic |
Antarctic Antarctic Peninsula Drake Passage Scotia Sea South Scotia Ridge The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Drake Passage Scotia Sea South Scotia Ridge The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Drake Passage Scotia Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Drake Passage Scotia Sea |
op_relation |
https://dx.doi.org/10.1144/jgs2023-013 https://dx.doi.org/10.6084/m9.figshare.c.6639909 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.6084/m9.figshare.c.6639909.v110.1144/jgs2023-01310.6084/m9.figshare.c.6639909 |
_version_ |
1768378437045583872 |