The Amirante Ridge and Trench System in the Indian Ocean: the southern termination of the NW Indian subduction
The Amirante Ridge and Trench System forms a 600-km-long arcuate structure in the Mascarene Basin (Indian Ocean), whose origin remains enigmatic. Here, I provide a paleogeographic reconstruction of the NW India margin for the Late Cretaceous–Paleocene interval, compiling information from ophiolites...
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| Format: | Article |
| Language: | English |
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Académie des sciences
2020-12-01
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| Series: | Comptes Rendus. Géoscience |
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| Online Access: | https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.40/ |
| _version_ | 1797651297274429440 |
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| author | Rodriguez, Mathieu |
| author_facet | Rodriguez, Mathieu |
| author_sort | Rodriguez, Mathieu |
| collection | DOAJ |
| description | The Amirante Ridge and Trench System forms a 600-km-long arcuate structure in the Mascarene Basin (Indian Ocean), whose origin remains enigmatic. Here, I provide a paleogeographic reconstruction of the NW India margin for the Late Cretaceous–Paleocene interval, compiling information from ophiolites surrounding the Arabian Sea and data collected at sea. This reconstruction shows that the Amirante Ridge and Trench System constitutes the southern termination of a ${\sim }$1500-km-long subduction, which used to run along the NW Indian margin during the Late Cretaceous–Paleocene. The dislocation of the NW Indian subduction, recorded at the Amirante Ridge and Trench System and the Bela ophiolites, may have played a role in the plate reorganization event recorded at 73–63 Ma. |
| first_indexed | 2024-03-11T16:13:59Z |
| format | Article |
| id | doaj.art-2798acf6bc994a29a217a25b38a0aaf8 |
| institution | Directory Open Access Journal |
| issn | 1778-7025 |
| language | English |
| last_indexed | 2024-03-11T16:13:59Z |
| publishDate | 2020-12-01 |
| publisher | Académie des sciences |
| record_format | Article |
| series | Comptes Rendus. Géoscience |
| spelling | doaj.art-2798acf6bc994a29a217a25b38a0aaf82023-10-24T14:24:07ZengAcadémie des sciencesComptes Rendus. Géoscience1778-70252020-12-01352323524510.5802/crgeos.4010.5802/crgeos.40The Amirante Ridge and Trench System in the Indian Ocean: the southern termination of the NW Indian subductionRodriguez, Mathieu0Laboratoire de Géologie, Ecole normale supérieure, PSL research university, CNRS UMR 8538, 24 rue Lhomond, 75005 Paris, FranceThe Amirante Ridge and Trench System forms a 600-km-long arcuate structure in the Mascarene Basin (Indian Ocean), whose origin remains enigmatic. Here, I provide a paleogeographic reconstruction of the NW India margin for the Late Cretaceous–Paleocene interval, compiling information from ophiolites surrounding the Arabian Sea and data collected at sea. This reconstruction shows that the Amirante Ridge and Trench System constitutes the southern termination of a ${\sim }$1500-km-long subduction, which used to run along the NW Indian margin during the Late Cretaceous–Paleocene. The dislocation of the NW Indian subduction, recorded at the Amirante Ridge and Trench System and the Bela ophiolites, may have played a role in the plate reorganization event recorded at 73–63 Ma.https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.40/AmiranteIndian OceanDeccanSubductionOphiolites |
| spellingShingle | Rodriguez, Mathieu The Amirante Ridge and Trench System in the Indian Ocean: the southern termination of the NW Indian subduction Comptes Rendus. Géoscience Amirante Indian Ocean Deccan Subduction Ophiolites |
| title | The Amirante Ridge and Trench System in the Indian Ocean: the southern termination of the NW Indian subduction |
| title_full | The Amirante Ridge and Trench System in the Indian Ocean: the southern termination of the NW Indian subduction |
| title_fullStr | The Amirante Ridge and Trench System in the Indian Ocean: the southern termination of the NW Indian subduction |
| title_full_unstemmed | The Amirante Ridge and Trench System in the Indian Ocean: the southern termination of the NW Indian subduction |
| title_short | The Amirante Ridge and Trench System in the Indian Ocean: the southern termination of the NW Indian subduction |
| title_sort | amirante ridge and trench system in the indian ocean the southern termination of the nw indian subduction |
| topic | Amirante Indian Ocean Deccan Subduction Ophiolites |
| url | https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.40/ |
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