Structural highs and lows of the São Bento Group in the region between Ribeirão Preto and Sertãozinho, northeast of São Paulo State

Abstract

The region between Ribeirão Preto and Sertãozinho, northeast of São Paulo State, presents a structural framework characterized by structural highs and lows, which were described based on the contacts between the Serra Geral/Botucatu and Botucatu/Piramboia formations. The first contact (Serra Geral/Botucatu) was determined from geological profiles of wells, and the second one (Botucatu/Piramboia), which is not always clearly observed in these geological profiles, was also interpreted from gamma-ray well logs, available mainly for the Ribeirão Preto region. The structural highs and lows, mainly NE-SW oriented, are associated with diabase intrusions into the Piramboia Formation.