Ensaios De Polarização Induzida Espectral (Sip) Aplicados À Exploração Mineral De Cobre E Chumbo Na Área Galeria Velha, Vale Do Ribeira-Pr

The present work shows de assays of Spectral<br>Induced Polarization (SIP), in gradient and dipoledipole<br>modes, on occurrences of metalic sulphides<br>and geochemical anomalies of Cu-Pb-Zn-Au in soils,<br>on the region of Vale do Ribeira – PR. In gradient<br>mode, the spectral parameter of time constant has<br>reflected a fault zone that lodges the main<br>mineralization recognaized in surface. The main axes<br>of apparent cargability coincide with graphitic marble<br>lens (carbonous). The inversion models of apparent<br>chargeability and resistivity data, obtained with the<br>dipole-dipole array, have defined whit accuracy the<br>lithological contact between calcitic marbles and<br>impure calcitic marbles, with graphitic intercalations.