Seismic stratigraphic framework and depositional history for Cretaceous and Cenozoic contourite depositional systems of the Mozambique Channel, SW Indian Ocean
International audience This study describes previously unrecognized contourite depositional systems (CDSs) in the Mozambique Channel which constrain palaeoceanographic models for this area. The stratigraphic stacking patterns record nine seismic units (SU1 to SU9) separated by eight major discontinu...
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ftinsu:oai:HAL:insu-02541713v1 2024-02-11T09:57:05+01:00 Seismic stratigraphic framework and depositional history for Cretaceous and Cenozoic contourite depositional systems of the Mozambique Channel, SW Indian Ocean Thiéblemont, Antoine Hernandez-Molina, F. Javier Jean-Pierre, Ponte Robin, Cécile Guillocheau, François Cazzola, Carlo Raisson, François Royal Holloway University of London (RHUL) Total E&P Géosciences Rennes (GR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) Total M&S Paris La Defense TOTAL FINA ELF Total 2020-07 https://insu.hal.science/insu-02541713 https://insu.hal.science/insu-02541713/document https://insu.hal.science/insu-02541713/file/thieblemont-2020.pdf https://doi.org/10.1016/j.margeo.2020.106192 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.margeo.2020.106192 insu-02541713 https://insu.hal.science/insu-02541713 https://insu.hal.science/insu-02541713/document https://insu.hal.science/insu-02541713/file/thieblemont-2020.pdf doi:10.1016/j.margeo.2020.106192 info:eu-repo/semantics/OpenAccess ISSN: 0025-3227 Marine Geology https://insu.hal.science/insu-02541713 Marine Geology, 2020, 425, pp.106192. ⟨10.1016/j.margeo.2020.106192⟩ Morphology Bottom Current Sedimentary Processes Cretaceous and Cenozoic Mozambique Margin Seismic Stratigraphy [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy info:eu-repo/semantics/article Journal articles 2020 ftinsu https://doi.org/10.1016/j.margeo.2020.106192 2024-01-24T17:34:35Z International audience This study describes previously unrecognized contourite depositional systems (CDSs) in the Mozambique Channel which constrain palaeoceanographic models for this area. The stratigraphic stacking patterns record nine seismic units (SU1 to SU9) separated by eight major discontinuities (a to h, oldest to youngest). Key seismic markers in CDS evolutionary history occur during Aptian-Albian (~122 Ma), late Cenomanian (94 Ma), early (38.2–36.2 Ma) and late (25–23 Ma) Oligocene, and early-middle Miocene (~17–15 Ma) epochs. These record onset (~122 to 94 Ma), growth (94 to 25–23 Ma), maintenance (25–23 to 17–15 Ma), and burial (17–15 Ma to the actual time) stages for CDSs. CDSs first develop during the onset stage which coincides with the opening and deepening of the African-Southern Ocean gateway (at 122 and 100 Ma, respectively). The growth stage, beginning in the late Cenomanian (94 Ma), correlates with the opening and deepening of the Equatorial Atlantic gateway. During the growth stage, two major shifts in sedimentary stacking pattern occur which coincide with palaeoceanographic changes during the early (38.2–36.2 Ma) and late (25–23 Ma) Oligocene. These in turn coincide with the onset and local enhancement of Antarctic water masses. CDS growth continued until the early-middle Miocene during the maintenance stage (~17–15 Ma). Most CDS growth ceased at the end of the maintenance stage. Circulation of the North Atlantic water mass into the Southern Hemisphere led to a deepening of Antarctic water masses in the area. Article in Journal/Newspaper Antarc* Antarctic North Atlantic Southern Ocean Institut national des sciences de l'Univers: HAL-INSU Antarctic Indian Southern Ocean Marine Geology 425 106192 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
Morphology Bottom Current Sedimentary Processes Cretaceous and Cenozoic Mozambique Margin Seismic Stratigraphy [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy |
spellingShingle |
Morphology Bottom Current Sedimentary Processes Cretaceous and Cenozoic Mozambique Margin Seismic Stratigraphy [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy Thiéblemont, Antoine Hernandez-Molina, F. Javier Jean-Pierre, Ponte Robin, Cécile Guillocheau, François Cazzola, Carlo Raisson, François Seismic stratigraphic framework and depositional history for Cretaceous and Cenozoic contourite depositional systems of the Mozambique Channel, SW Indian Ocean |
topic_facet |
Morphology Bottom Current Sedimentary Processes Cretaceous and Cenozoic Mozambique Margin Seismic Stratigraphy [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy |
description |
International audience This study describes previously unrecognized contourite depositional systems (CDSs) in the Mozambique Channel which constrain palaeoceanographic models for this area. The stratigraphic stacking patterns record nine seismic units (SU1 to SU9) separated by eight major discontinuities (a to h, oldest to youngest). Key seismic markers in CDS evolutionary history occur during Aptian-Albian (~122 Ma), late Cenomanian (94 Ma), early (38.2–36.2 Ma) and late (25–23 Ma) Oligocene, and early-middle Miocene (~17–15 Ma) epochs. These record onset (~122 to 94 Ma), growth (94 to 25–23 Ma), maintenance (25–23 to 17–15 Ma), and burial (17–15 Ma to the actual time) stages for CDSs. CDSs first develop during the onset stage which coincides with the opening and deepening of the African-Southern Ocean gateway (at 122 and 100 Ma, respectively). The growth stage, beginning in the late Cenomanian (94 Ma), correlates with the opening and deepening of the Equatorial Atlantic gateway. During the growth stage, two major shifts in sedimentary stacking pattern occur which coincide with palaeoceanographic changes during the early (38.2–36.2 Ma) and late (25–23 Ma) Oligocene. These in turn coincide with the onset and local enhancement of Antarctic water masses. CDS growth continued until the early-middle Miocene during the maintenance stage (~17–15 Ma). Most CDS growth ceased at the end of the maintenance stage. Circulation of the North Atlantic water mass into the Southern Hemisphere led to a deepening of Antarctic water masses in the area. |
author2 |
Royal Holloway University of London (RHUL) Total E&P Géosciences Rennes (GR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) Total M&S Paris La Defense TOTAL FINA ELF Total |
format |
Article in Journal/Newspaper |
author |
Thiéblemont, Antoine Hernandez-Molina, F. Javier Jean-Pierre, Ponte Robin, Cécile Guillocheau, François Cazzola, Carlo Raisson, François |
author_facet |
Thiéblemont, Antoine Hernandez-Molina, F. Javier Jean-Pierre, Ponte Robin, Cécile Guillocheau, François Cazzola, Carlo Raisson, François |
author_sort |
Thiéblemont, Antoine |
title |
Seismic stratigraphic framework and depositional history for Cretaceous and Cenozoic contourite depositional systems of the Mozambique Channel, SW Indian Ocean |
title_short |
Seismic stratigraphic framework and depositional history for Cretaceous and Cenozoic contourite depositional systems of the Mozambique Channel, SW Indian Ocean |
title_full |
Seismic stratigraphic framework and depositional history for Cretaceous and Cenozoic contourite depositional systems of the Mozambique Channel, SW Indian Ocean |
title_fullStr |
Seismic stratigraphic framework and depositional history for Cretaceous and Cenozoic contourite depositional systems of the Mozambique Channel, SW Indian Ocean |
title_full_unstemmed |
Seismic stratigraphic framework and depositional history for Cretaceous and Cenozoic contourite depositional systems of the Mozambique Channel, SW Indian Ocean |
title_sort |
seismic stratigraphic framework and depositional history for cretaceous and cenozoic contourite depositional systems of the mozambique channel, sw indian ocean |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://insu.hal.science/insu-02541713 https://insu.hal.science/insu-02541713/document https://insu.hal.science/insu-02541713/file/thieblemont-2020.pdf https://doi.org/10.1016/j.margeo.2020.106192 |
geographic |
Antarctic Indian Southern Ocean |
geographic_facet |
Antarctic Indian Southern Ocean |
genre |
Antarc* Antarctic North Atlantic Southern Ocean |
genre_facet |
Antarc* Antarctic North Atlantic Southern Ocean |
op_source |
ISSN: 0025-3227 Marine Geology https://insu.hal.science/insu-02541713 Marine Geology, 2020, 425, pp.106192. ⟨10.1016/j.margeo.2020.106192⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.margeo.2020.106192 insu-02541713 https://insu.hal.science/insu-02541713 https://insu.hal.science/insu-02541713/document https://insu.hal.science/insu-02541713/file/thieblemont-2020.pdf doi:10.1016/j.margeo.2020.106192 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.margeo.2020.106192 |
container_title |
Marine Geology |
container_volume |
425 |
container_start_page |
106192 |
_version_ |
1790608488962981888 |