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Book Chapter

An Overview of the Geology and Geochemistry of the Coso Geothermal Area, Inyo County, CA.

By
Alan E. Williams
Alan E. Williams
Department of Earth Sciences and I.G.P.P., University of California, Riverside CA
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Published:
January 01, 1991

Abstract

The Coso Geothermal Project is a generation facility which produces 240 megawatts of electric power using turbine generators powered directly from geothermal steam. In this area, steam is provided by an active hydrothermal circulation system established in the fractured granitic basement rocks and extending upward into the overlying silicic volcanics and volcaniclastics. The geothermal reservoir has been tapped at depths of 1–2 km. and produces water and steam at temperatures of about 250–350°C. This active hydrothermal circulation may be quite analogous to fossil systems which have produced precious metal–bearing ore bodies in rhyolite-hosted environments. This paper will review the geologic setting of the Coso system and provide an overview of its reservoir chemistry.

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Contents

Society of Economic Geologists Guidebook Series

The Diversity of Mineral and Energy Resources of Southern California

Michael A. McKibben
Michael A. McKibben
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Society of Economic Geologists
Volume
12
ISBN electronic:
9781934969656
Publication date:
January 01, 1991

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