Data/hora: 05/06/2024 18:19:42

Provedor de dados: | 5
País: | France
Título: | The offshore east african rift system: new insights from the sakalaves seamounts (Davie Ridge, SW Indian Ocean)
Autores: | Courgeon, Simon; Bachelery, Patrick; Jouet, Gwenael; Jorry, Stephan; Bou, Esther; Boudagher-fadel, Marcelle K.; Revillon, Sidonie; Camoin, Gilbert; Poli, Emmanuelle.
Data: | 2018-10
Ano: | 2018
Resumo: | The offshore branch of the East African Rift System (EARS) has developed during late Cenozoic time along the eastern Africa continental margin. While Neogene–Pleistocene extensional tectonic deformation has been evidenced along the northern segment of the Davie Ridge, the spatial extent of deformation further south remains poorly documented. Based on recent and various oceanographic data sets (bathymetric surveys, dredge samples and seismic profiles), our study highlights active normal faulting, modern east–west extensional tectonic deformation and Late Cenozoic alkaline volcanism at the Sakalaves Seamounts (18°S, Davie Ridge) that seem tightly linked to the offshore EARS development. In parallel, rift‐related tectonic subsidence appears responsible for the drowning of the Sakalaves Miocene shallow‐water carbonate platform. Our findings bring new insights regarding the development of the EARS offshore branch and support recent kinematic models proposing the existence of a plate boundary across the Mozambique Channel.
Tipo: | Text
Idioma: | Inglês

Identificador:

https://archimer.ifremer.fr/doc/00452/56344/57934.pdf

DOI:10.1111/ter.12353

https://archimer.ifremer.fr/doc/00452/56344/

Editor: | Wiley
Formato: | application/pdf
Fonte: | Terra Nova (0954-4879) (Wiley), 2018-10 , Vol. 30 , N. 5 , P. 380-388

Fonte:

2018 John Wiley &amp; Sons Ltd

info:eu-repo/semantics/openAccess

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