Telluric and D. C. resistivity techniques applied to the geophysical investigation of basin and range geothermal systems

In recent years considerable interest has developed in the use of geothermal energy. However, much of the exploration technology which exists to find and delineate the features of geothermal systems is in its infancy. Several electrical techniques as applied to geothermal exploration are divided into three independent parts. A natural field electrical exploration technique, the E-field ratio telluric method is described in Part 1. Two dimensional numerical model study and comparison of the polar dipole-dipole and Schlumberger resistivity arrays is described in Part 2. A detailed interpretation of E-field ratio telluric, bipole-dipole restivity mapping, and dipole-dipole resistivity data obtained in the course of geophysical exploration of the Leach Hot Springs area of Grass Valley, Nevada is discussed in Part 3.