The Côte d’Ivoire–Ghana transform margin: sedimentary and tectonic structure from multichannel seismic data     

G. Lamarche  C. Basile  J. Mascle  Franc¸oise Sage 《Geo-Marine Letters》1997,17(1):62-69

We present multi channel seismic data recorded at the transition between the Ivorian (rifted) basin and the Côte d’Ivoire–Ghana marginal ridge (formed in a Cretaceous transform margin). The ridge is made of sedimentary sequences continuous with the synrift sediments of the Ivorian basin. Clinoformal structures suggest synrift progradational sedimentation originating from the Brazilian craton, which was located to the south during the Cretaceous. Subsequent to rifting, southward migration of the transform motion isolated the ridge from the Brazilian shelf. In the western part of the marginal ridge, crustal half-grabens are buried by postrifting progradational sedimentation, suggesting important posttransform subsidence.  相似文献