Imaging exhumed continental and proto-oceanic crusts in the Camamu triple junction, Brazil

Afonso Loureiro,Alexandra Afilhado,Philippe Schnürle,Mikael Evain,Nuno A. Dias,Frauke Klingelhöfer,Flora Gallais, João Marcelo Pinheiro,José Eduardo Soares,Reinhardt Fuck,J.A. Cupertino,Adriano Viana,Carlos Corela,Maryline Moulin,Daniel Aslanian

SSRN Electronic Journal（2023）

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摘要

During the SALSA experiment, in 2014, twelve combined wide-angle refraction and coincident multi-channel seismic profiles were acquired in the Jequitinhonha-Almada-Camamu, Jacuípe, and Sergipe-Alagoas basins, NE Brazil. Profile SL09 images the Almada-Camamu basin and the São Francisco craton, with 18 four-channel ocean-bottom seismometers and 22 land stations. The datasets were forward modelled and combined with pre-stack depth migration to increase the horizontal resolution of the velocity models.

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关键词

NE Brazil,South atlantic ocean,Passive margins,Camamu triple poin,Wide-angle refraction seismic,PSDM,Crustal structure,Cretaceous breakup,Exhumed lower continental crust,SALSA

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