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Structure of the Northern Bay of Bengal offshore Bangladesh: Evidences from new multi-channel seismic data ArchiMer
Rangin, Claude; Sibuet, Jean-claude.
New multi-channel seismic data were acquired in the northern part of the Bay of Bengal and at the northernmost termination of the 90°E Indian Ridge offshore Bangladesh. This survey was coupled with a seismic refraction experiment indicating this offshore basin is here floored by a thinned (15 km thick) continental crust, injected by Mesozoic volcanism. This attenuated continental crust is interpreted as formed during Gondwana super-continent fragmentation during a syn-rift period. The dominant tectonic pattern is marked by NE-SW trending tilted blocks filled by syn-rift sediments clearly identified on seismic profiles. The uppermost part of this continental crust (3–4 km thick) shows a complex assemblage of dipping reflectors and west-facing tilted blocks...
Tipo: Text Palavras-chave: Bay of Bengal; Seismic analysis; Basin structure; Bangladesh.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00378/48974/49381.pdf
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