Interpretation of Electrical Resistivity and Shallow Seismic Reflection Profiles, Whirlwind Valley and Horse Heaven Areas, Beowawe KGRA, Nevada

摘要

Numerical modeling and analysis of surface electrical and seismic data from the Beowawe KGRA, north-central Nevada, permit extrapolation of mapped geologic units and structures to approximately a mile (1.6 km) depth from which inferences about the geothermal system can be made. Detailed numerical modeling was complete for 78 line-mi. (125 km) of dipole-dipole resistivity data and includes compensation for topographic effects caused by the Malpais Rim scarp. The interpreted sections have as many as five distinct electrical units, one of which occurs only within the area of hydrothermal alteration along the fault set at the base of the Malpais Rim. The weight-drop seismic reflection data show numerous normal faults sub-parallel to the Malpais Rim within Whirlwind Valley west and southwest of The Geysers. (ERA citation 05:015503)