Interpretation of the electrical resistivity tomography data obtained for shallow fault zones: A tectonophysical approach

Abstract

A new tectonophysical approach to the interpretation of the electrical resistivity tomography of shallow fault zones is proposed. The approach is based on ideas about their stage-to-stage development, which suggests a regular occurrence of different designation levels of the rock substratum. The levels distinguished on the basis of a statistical analysis of ERT data allow one to determine the boundaries of the fault zone and inner subzones, connected with the formation of the main fault plane and second-order fractures, on a geoelectrical section.