Adding Value on the Inverse Problem Solution by Modeling the Tipper Vector and the Total Magnetic Field

Abstract

In lithostratigraphic terms the volcanic environments are complex. Prior information is required to facilitate the solution of the inverse problem. It is necessary to evaluate hypotheses according to existing geological and geophysical data. But aspects such as EM field distortions, conductive faults, or deep electrical conductors, for example, could increases its ambiguity. The magneto telluric interpretation suits well for testing these hypotheses. With tipper’s magnitude and strike, together with a potential method, is possible, to locate and identify conductive and non-conductive structures, that helps to recognize traces and structural scenarios. The case of the geothermal resources of Las Pailas, phase II, is analyzed, with the results of ground magnetics exploration, and tipper vector data from previous MT electromagnetic campaigns. These data, fed back and/or supported a simplified conceptual model of the geothermal field during its development. A correlation was observed in a specific geological environment showing possible structural and lithological relations through the use of intuitive geophysical tools, like the total magnetic field map, filtered, and a classical approach by MT exploration, evaluating the tipper.