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The Geysers geothermal area and associated Clear Lake Volcanics have aroused much scientific interest and have been subjected to many sorts of geophysical investigations. Summaries of these studies have been published by Isherwood (1981) and Majer and others (1992). In this Paper we provide a broad tectonic interpretation of the Clear Lake region and the relationship to the local gold mineralization, by interpreting magnetic and gravity data together with other available geologic and geophysical information. These results stem from work in progress and should be considered preliminary.

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