Aeromagnetic Survey At Coso Geothermal Area (1980)

From Open Energy Information

Exploration Activity: Aeromagnetic Survey At Coso Geothermal Area (1980)

Exploration Activity Details
Location Coso Geothermal Area
Exploration Technique Aeromagnetic Survey
Activity Date 1980
Usefulness not indicated
DOE-funding Unknown

Dense, magnetic rocks associated with a complex mafic pluton 9 km in diameter form a relatively impermeable north border of the Pleistocene volcanic field. A heat flow high nearly coincides with the west half of a 6-km-diameter magnetic low. A 2-km-diameter outcrop of a pre-Cenozoic silicic pluton, which has low magnetization compared to the surrounding metamorphic rocks, presumably typifies the rocks that underlie the magnetic low and heat flow high. Hydrothermal fluids may have destroyed some magnetite in the more magnetic wall rock, further reducing the magnetic intensity.


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