The hydrothermal system in central Twin Falls County, Idaho
This report describes the results of a study to define the areal extent and thickness of the hydrothermal reservoir in Twin Falls County and to propose a generalized conceptual model of the system. Specific objectives of the study, done in cooperation with the Idaho Department of Water Resources, were to evaluate the existing resource as to its volume, temperature, pressure, and water chemistry, and to determine the effects of present development on the resource. The study was limited to Twin Falls County. Some geologic, geochemical, and hydrologic data for the hydrothermal system were available from earlier studies. However, information about the subsurface at depths greater than 1000 feet was sparse. One well for which data were available was drilled to 2525 feet; several others were drilled to depths between 1200 and 2200 feet. Direct-current electrical resistivity soundings conducted during the summer of 1985 as part of the study provided valuable information about the subsurface at depths less than about 6000 feet. Interpretation of computer-generated subsurface profiles constructed from the soundings provided the basis for determining the thickness of the Idavada Volcanics over much of the study area. 42 refs., 9 figs., 3 tabs.
- Research Organization:
- Geological Survey, Boise, ID (USA). Water Resources Div.; Idaho Dept. of Water Resources, Boise (USA)
- DOE Contract Number:
- FG07-84ID12549
- OSTI ID:
- 6110416
- Report Number(s):
- DOE/ID/12549-1; USGS-WRI-88-4152; ON: DE89014219
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
IDAHO
GEOTHERMAL EXPLORATION
ELECTRIC CONDUCTIVITY
GEOCHEMICAL SURVEYS
GEOLOGIC SURVEYS
GEOLOGY
GEOPHYSICS
GEOTHERMAL WELLS
HYDROLOGY
HYDROTHERMAL SYSTEMS
ELECTRICAL PROPERTIES
ENERGY SYSTEMS
EXPLORATION
FEDERAL REGION X
GEOTHERMAL SYSTEMS
NORTH AMERICA
PHYSICAL PROPERTIES
SURVEYS
USA
WELLS
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