O Alto De Vitória E Seu Papel Na Evolução Sedimentar Da Margem; Porção Norte Da Bacia De Campos E Sul Da Bacia Do Espírito Santo

This study focus on the role of the Vitoria Structural High on the deep-water tectono-stratigraphic evolution of the adjacent Campos and Espirito Santos basins , based on 2D seismic analysis. The Vitoria High has been currently reffered to in the literature as the structural limit between the Campos and Espirito Santo marginal basins. However, our seismic analysis shows that on the lower slope and continental rise, the Vitoria High has a rather limited geographical and morphological expression and does not act as barrier that influences the stratigraphic records of both basins. On the other hand, our seismic analysis reveals that the morphology of the Vitoria High is characterized by fault scarps and ramps inherited from the extensional rift tectonics. Fault scarps and ramps in such a context acted as residual morphologies at the base of the Aptian mobile salt layer, affecting the structural evolution of salt-related extensional faults that were conditioned to sole out in the residual morphology at the salt base. As a consequence, the morphology of the Vitoria High had an indirect impact on the sedimentary architecture of overlying marine sequences, determining the location and development of local depocenters (minibasins) along rollover structures in the extensionsal domain of salt tectonics.