CSAMT surveys utilise EM waves transmitted over a range of frequencies to determine subsurface resistivity. This low-impact, non-intrusive technique has been used extensively by the minerals, geothermal, hydrocarbon, and groundwater exploration industries since 1978, when CSAMT equipment systems first became commercially available. Primary factors affecting resistivities include rock or sediment porosity, pore fluids, and the presence of certain mineral assemblages. For hydrological investigations, CSAMT data may provide critical information about geologic structure, lithology, water table trends, and trends in pore fluid salinity or contamination. Zonge can furnish software for two-dimensional modelling of CSAMT data (SCS2D).
A CONDUCTIVE CSAMT FEATURE OBSERVED ON THE SUR DE GUERRERO GRID, NEAR THE TOWN OF TAXCO IN GUERRERO, MEXICO, WAS LATER CONFIRMED AS A DISCOVERY BY THIS YEAR'S IMMSA DRILLING CAMPAIGN. THIS FEATURE IS NOW CALLED THE MANTO ESPERANZA VEIJA VEIN. THIS PAPER COMPARES THE GEOLOGY IDENTIFIED BY IMMSA DRILLING WITH THE CSAMT RESULTS MODELED BY ZONGE ENGINEERING.