Distribuição espacial e caracterização geológica dos arenitos asfálticos da borda leste da Bacia do Paraná no estado de São Paulo

Abstract

This paper focuses on the spatial distribution of the main tar sand occurrences in the Eastern Border of the Parana Basin, Sao Paulo State. The spatial analysis of these occurrences was performed according to geological features present in the area. Field data, geocronological data, airborne magnetometrics and remote sensing data have provided information for structural maps, lineament maps and magnetometric maps. Based on the regional and field data it was described the main elements and processes related to the genesis of the tar sand occurrences in the area. It was concluded that the best genetic model relates oil generation to the intrusion of sills of the Serra Geral Formation in the black shales of the Irati Formation; migration through faults and dike walls and accumulation in the sandstones of Piramboia Formation. trapped by argillaceous layers of the interdune and fluvial facies of Piramboia Formation and by basic dikes.