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Geothermal fields in California
Arthur Lakes Library Colorado Digitization Project Russell L. and Lyn Wood Mining History Archive
Arthur Lakes Library
Colorado Digitization Project
Russell L. and Lyn Wood Mining History Archive
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1900?-1999?
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Abstract
Photograph showing a close-up view of the geysers in a geothermal field in California. This is probably the Geysers geothermal field, which is located on the southwest side of the Clear Lake volcanic field in Sonoma County, California. The Geysers is the largest producing geothermal field in the world with installed electrical generating capacity of about 2,000 megawatts, and it produces enough electricity for about two cities the size of San Francisco. Gravity and teleseismic studies suggest that a large silicic magna chamber, which is around fourteen kilometers in diameter, lies about seven kilometers beneath the volcanic field, and this is thought to be the heat source for the Geysers geothermal field. Geothermal reservoirs such as this one are much hotter than surface hot springs with the water reaching temperatures of more than 350C (700F), which makes them powerful sources of energy because the hot water and steam can be used to produce electricity by turning the ...
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