Sidney Luiz de Matos Mello e Cleverson Guizan Silva

Ilha Grande bay is located in the southern coast of Rio de Janeiro state, Brazil, and is characterized by a rocky coast with numerous islands, being Ilha Grande the main one with 193km2 of area. This region represents nowadays an important and strategic economic area both because of its touristic attractive and its position in the oil and gas scenario because of its proximity of the Santos Basin. In this work the west portion on the Ilha Grande Bay was priorized. The mean depth in this area is 20m with shallower areas occurring inside small bays and enseadas. Baía da Ribeira and Enseada de Parati, for example, show depths of less than 10m. A recent shallow seismic survey has been made in the area, with the acquisition of over 130km of high resolution seismic data in the frequency of 10 kHz, totalizing 6 profiles. The goal of this paper is to present the preliminary results of a project that has as the main objective the study of the holocenic sedimentary evolution of this area.