Correlação do método de eletrorresistividade e a análise estrutural em cava de mineração de mármore no município de Caçapava do Sul

Abstract

The Caçapava do Sul city has a lithological formation favorable for geological exploration. Mining in the area has been explored for decades through opencast mining activities, modifying the local morphology in this area occurred many tectonic and metamorphic events which is evidenced structures such as faults and fractures. In this context, this study was divided into few steps: such as field campaign to analyze the geological context, identifying lithologies present in pit mining; surveys to determine the measures of area and perimeter (location, orientation and variations in relief); collection of structural measures in the field to understand the behavior of structures in the pit; method of geophysical resistivity as an indirect parameter for verification and correlation of probable existing fractures, as well as the lithological contacts. The integration of data acquired in the field and those processed in the laboratory (computer, petrography) they enable a better understanding of the target area. Therefore, it was possible to generate geological profiles and correlate with the geoelectric profiles of subsurface identifying lithological contacts and structural preferential directions due to check capacity of resistive physical properties of the medium and its contrasts, is the massive rock structures (joints, fractures) and fluid seepage.