Abstract
This work presents the preliminary comparative analysis of the regional structures observed in onshore satellite images and their continuation toward the Campos Basin shallow water platform. These results were obtained by integration of aeromagnetic and gravimetric data, satellite images, topographic, and regional structural maps, combined with structural analysis from fieldwork. The southern portion of the Campos Basin is located over gneissic rocks of the Cabo Frio Tectonic Domain (CFTD), a Cambrian-Ordovician tectonic unit formed during the agglutination of the Gondwana Paleocontinent. All the CFTD lithotypes are tectonically intercalated throughout thrust zones, dipping between 5o and 30o to the south. These units were deformed during D1 and D2 deformation stages, at c.a. 520 Ma (Schmitt et al., 2004). The CFTD was juxtaposed to the tectonic units of the Ribeira Belt during D3 phase. The contact is marked by a thrust fault striking NE-SW that dips 30o to the south, with a vergence towards the NW. This regional structure is present in the Macae region, from where, supposedly, it inflects in an ENE-WSW direction towards the continental platform, with a predominant NE-SW strike related to Early Cretaceous syn-rift fault trends.
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