Oceanographic and climatic consequences of the tectonic evolution of the southern scotia sea basins, Antarctica
The Scotia Sea is a complex geological area located in the Southern Ocean which evolution is closely linked to the opening of the Drake Passage. Structural highs of continental nature derived from the former continental bridge between South America and the Antarctic Peninsula surround the abyssal pl...
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ftnerc:oai:nora.nerc.ac.uk:524734 2024-02-11T09:56:17+01:00 Oceanographic and climatic consequences of the tectonic evolution of the southern scotia sea basins, Antarctica Perez, Lara F. Henández-Molina, F. Javier Lodolo, Emanuele Bohoyo, Fernando Galindo-Zaldívar, Jesus Maldonado, Andrés 2019-11 text http://nora.nerc.ac.uk/id/eprint/524734/ https://nora.nerc.ac.uk/id/eprint/524734/1/1-s2.0-S0012825218307074-main.pdf https://www.sciencedirect.com/science/article/pii/S0012825218307074 en eng Elsevier https://nora.nerc.ac.uk/id/eprint/524734/1/1-s2.0-S0012825218307074-main.pdf Perez, Lara F. orcid:0000-0002-6229-4564 Henández-Molina, F. Javier; Lodolo, Emanuele; Bohoyo, Fernando; Galindo-Zaldívar, Jesus; Maldonado, Andrés. 2019 Oceanographic and climatic consequences of the tectonic evolution of the southern scotia sea basins, Antarctica. Earth-Science Reviews, 198, 102922. 18, pp. https://doi.org/10.1016/j.earscirev.2019.102922 <https://doi.org/10.1016/j.earscirev.2019.102922> cc_by_nc_nd_4 Publication - Article PeerReviewed 2019 ftnerc https://doi.org/10.1016/j.earscirev.2019.102922 2024-01-19T00:03:13Z The Scotia Sea is a complex geological area located in the Southern Ocean which evolution is closely linked to the opening of the Drake Passage. Structural highs of continental nature derived from the former continental bridge between South America and the Antarctic Peninsula surround the abyssal plains of the Scotia Sea, restricting small isolated sedimentary basins along its southern margin. Morpho-structural and seismo-stratigraphic analyses of multichannel seismic reflection profiles, and additional geophysical data available in the region, have been conducted, decoding regional and global implications of the basins' evolution. The main aim of this work is to describe the stratigraphic evolution of the southern Scotia Sea basins, from their opening in the back-arc tectonic context of the Scotia Sea, to the last oceanographic changes which have carried on global climatic implications. The evolution of the south Scotia Sea occurred through two major tectonic stages registered in the sedimentary record of the region: 1) the end of the subduction in the northwest part of the Weddell Sea during the early Miocene, which shortened the back-arc subduction trench generating a major change in the regional tectonic field that determined the evolution of the southern basins towards two different types of passive margins: magma-poor and magma-rich; and 2) the full development of the southern Scotia Sea basins during the middle Miocene, that led to the opening of deep oceanic gateways along the South Scotia Ridge. Interplay among tectonics, oceanography and climate is proposed to control the regional sedimentary stacking pattern, with coeval changes globally identified. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Drake Passage Scotia Sea Southern Ocean Weddell Sea Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean The Antarctic Antarctic Peninsula Weddell Sea Drake Passage Scotia Sea Weddell South Scotia Ridge ENVELOPE(-46.500,-46.500,-60.000,-60.000) Earth-Science Reviews 198 102922 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
The Scotia Sea is a complex geological area located in the Southern Ocean which evolution is closely linked to the opening of the Drake Passage. Structural highs of continental nature derived from the former continental bridge between South America and the Antarctic Peninsula surround the abyssal plains of the Scotia Sea, restricting small isolated sedimentary basins along its southern margin. Morpho-structural and seismo-stratigraphic analyses of multichannel seismic reflection profiles, and additional geophysical data available in the region, have been conducted, decoding regional and global implications of the basins' evolution. The main aim of this work is to describe the stratigraphic evolution of the southern Scotia Sea basins, from their opening in the back-arc tectonic context of the Scotia Sea, to the last oceanographic changes which have carried on global climatic implications. The evolution of the south Scotia Sea occurred through two major tectonic stages registered in the sedimentary record of the region: 1) the end of the subduction in the northwest part of the Weddell Sea during the early Miocene, which shortened the back-arc subduction trench generating a major change in the regional tectonic field that determined the evolution of the southern basins towards two different types of passive margins: magma-poor and magma-rich; and 2) the full development of the southern Scotia Sea basins during the middle Miocene, that led to the opening of deep oceanic gateways along the South Scotia Ridge. Interplay among tectonics, oceanography and climate is proposed to control the regional sedimentary stacking pattern, with coeval changes globally identified. |
format |
Article in Journal/Newspaper |
author |
Perez, Lara F. Henández-Molina, F. Javier Lodolo, Emanuele Bohoyo, Fernando Galindo-Zaldívar, Jesus Maldonado, Andrés |
spellingShingle |
Perez, Lara F. Henández-Molina, F. Javier Lodolo, Emanuele Bohoyo, Fernando Galindo-Zaldívar, Jesus Maldonado, Andrés Oceanographic and climatic consequences of the tectonic evolution of the southern scotia sea basins, Antarctica |
author_facet |
Perez, Lara F. Henández-Molina, F. Javier Lodolo, Emanuele Bohoyo, Fernando Galindo-Zaldívar, Jesus Maldonado, Andrés |
author_sort |
Perez, Lara F. |
title |
Oceanographic and climatic consequences of the tectonic evolution of the southern scotia sea basins, Antarctica |
title_short |
Oceanographic and climatic consequences of the tectonic evolution of the southern scotia sea basins, Antarctica |
title_full |
Oceanographic and climatic consequences of the tectonic evolution of the southern scotia sea basins, Antarctica |
title_fullStr |
Oceanographic and climatic consequences of the tectonic evolution of the southern scotia sea basins, Antarctica |
title_full_unstemmed |
Oceanographic and climatic consequences of the tectonic evolution of the southern scotia sea basins, Antarctica |
title_sort |
oceanographic and climatic consequences of the tectonic evolution of the southern scotia sea basins, antarctica |
publisher |
Elsevier |
publishDate |
2019 |
url |
http://nora.nerc.ac.uk/id/eprint/524734/ https://nora.nerc.ac.uk/id/eprint/524734/1/1-s2.0-S0012825218307074-main.pdf https://www.sciencedirect.com/science/article/pii/S0012825218307074 |
long_lat |
ENVELOPE(-46.500,-46.500,-60.000,-60.000) |
geographic |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Weddell Sea Drake Passage Scotia Sea Weddell South Scotia Ridge |
geographic_facet |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Weddell Sea Drake Passage Scotia Sea Weddell South Scotia Ridge |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Drake Passage Scotia Sea Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Drake Passage Scotia Sea Southern Ocean Weddell Sea |
op_relation |
https://nora.nerc.ac.uk/id/eprint/524734/1/1-s2.0-S0012825218307074-main.pdf Perez, Lara F. orcid:0000-0002-6229-4564 Henández-Molina, F. Javier; Lodolo, Emanuele; Bohoyo, Fernando; Galindo-Zaldívar, Jesus; Maldonado, Andrés. 2019 Oceanographic and climatic consequences of the tectonic evolution of the southern scotia sea basins, Antarctica. Earth-Science Reviews, 198, 102922. 18, pp. https://doi.org/10.1016/j.earscirev.2019.102922 <https://doi.org/10.1016/j.earscirev.2019.102922> |
op_rights |
cc_by_nc_nd_4 |
op_doi |
https://doi.org/10.1016/j.earscirev.2019.102922 |
container_title |
Earth-Science Reviews |
container_volume |
198 |
container_start_page |
102922 |
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1790601984296878080 |