FIGURE 5. Active thermal features along Brady's Fault after Brady no. 5 blew out in June 1979.


1975 to a depth of 4446 feet. It has a maximum temperature near 300°F and reportedly produces 120,000 lbs per hour of fluid.

In 1971 the U. S. Geological Survey (Godwin and others, 1971) designated 19,020 acres in the vicinity of Brady's Hot Springs as a Known Geothermal Resource Area, indicating that the USGS considered Federal lands in the area promising enough to warrant expenditures of money for geothermal exploration and (or) development.

Prior to 1973 all geothermal exploration work had been done in the immediate vicinity of the thermal features along Brady's Fault. No geothermal exploration work had been conducted in surrounding areas because no one suspected the presence of another geothermal reservoir in the area. The Desert Peak geothermal field has no active surficial thermal features and only subtle nonthermal indications of its presence.

There are no hot springs, fumaroles, or mud pots associated with the Desert Peak field. A minor mercury occurrence was reported about Vi mile east of Brady's Hot Springs (Bailey and Phoenix, 1944). A few small patches of hydrothermal alteration and small, widely scattered calcareous and siliceous mounds may imply the presence of a geothermal reservoir nearby, but these features are common in western Nevada and in the majority of cases do not appear to be related to viable geothermal reservoirs.

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