Subsurface geology and geothermal prospects in the Nampa-Caldwell area of the western Snake River Plain, Idaho
- Boise State Univ., ID
Subsurface geological and geophysical data show a 2100-m-thick sequence of interbedded basalt and sediment lie beneath the Idaho Group sediments in the Nampa-Caldwell area of the western Snake River Plain. Numerous faults in the subsurface define a central horst that divides the subsurface into separate basins. Overlying the basalt section are widespread sandstone aquifers that can be expected to yeild good flows of moderately warm waters (30 to 55/sup 0/C) from depths of 300 to 650 m. Normal faulting occurs throughout most of the stratigraphic section, but fault offsets diminish upwards. Deep wells drilled to encounter fracture zones associated with faulting may produce high temperature waters, but these prospects are considerably more speculative than the sandstone aquifers.
- OSTI ID:
- 6427566
- Report Number(s):
- CONF-800920-
- Journal Information:
- Trans. - Geotherm. Resour. Counc.; (United States), Vol. 4; Conference: Geothermal Resource Council annual meeting, Salt Lake City, UT, USA, 9 Sep 1980
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
IDAHO
GEOLOGY
RESISTIVITY LOGGING
BASALT
GEOLOGIC FAULTS
HEAT FLOW
SANDSTONES
SEDIMENTS
SEISMIC SURVEYS
ELECTRIC LOGGING
GEOLOGIC STRUCTURES
GEOPHYSICAL SURVEYS
IGNEOUS ROCKS
NORTH AMERICA
PACIFIC NORTHWEST REGION
ROCKS
SEDIMENTARY ROCKS
SURVEYS
USA
VOLCANIC ROCKS
WELL LOGGING
150201* - Geology & Hydrology of Geothermal Systems- USA- (-1989)
150301 - Geothermal Exploration & Exploration Technology- Geophysical Techniques & Surveys