Audio-Magnetotellurics At Coso Geothermal Area (1977)

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Exploration Activity: Audio-Magnetotellurics At Coso Geothermal Area (1977)

Exploration Activity Details
Location Coso Geothermal Area
Exploration Technique Audio-Magnetotellurics
Activity Date 1977

Usefulness not indicated
DOE-funding Unknown

Exploration Basis
To investigate electrical properties of rocks associated with thermal phenomena of the Devil's Kitchen-Coso Hot Springs area
Audio-magnetotelluric geophysical surveys determined that the secondary low in the geothermal area, best defined by the 7.5-Hz AMT map and dc soundings, is caused by a shallow conductive zone (5--30 ohm m) interpreted to be hydrothermally altered Sierra Nevada basement rocks containing saline water of a hot water geothermal system. This zone of lowest apparent resistivities over the basement rocks lies within a closed contour of a heat flow anomaly where all values are greater than 10 heat flow units.


Additional References