Integração de dados geoelétricos e aerogamaespectrométricos na caracterização de zona de alteração hidrotermal na Mina Paredão em Lavras do Sul – RS

Abstract

The research is a geophysical study carried out at the Paredão inactive mine, located west of the city of Lavras do Sul, Rio Grande do Sul. The geological context of the study area is composed of granodiorites and monzogranite of the Lavras do Sul Intrusive Complex. This work aims to identify and characterize hydrothermal zones with or without auriferous mineralization. For the accomplishment of this study the aero-gamma-spectrometric and geoelétricos data were used. Through the integration of geophysical and geological data it was possible to identify 5 possible zones of hydrothermal alteration in the Paredão Mine with similar anomalous values compared to a hydrothermal alteration zone with gold, verified by drilling holes performed by the company Amarillo Gold Corporation in Mine Caneleira. In addition, through the Electric Hiking Technique, it was possible to identify two supposed fractures with preferred NW directions that could have served as conduits for auriferous mineralization.