Water geochemistry of hydrothermal systems, Wood River District, Idaho

Technical Report · Mon Aug 01 04:00:00 EDT 1983

DOI:https://doi.org/10.2172/6838222· OSTI ID:6838222

Zeisloft, J; Foley, D; Blackett, R

Hydrothermal systems of the Wood River District, central Idaho, have been studied by geologic mapping of thermal spring areas and geochemical investigations of thermal and non-thermal waters. This report summarizes the new geochemical data gathered during the study. Integration of the results of geological and geochemical studies has led to development of a target model for hydrothermal resources on the margin of the Idaho Batholith. Warfield Hot Springs, with temperatures up to 58/sup 0/C, flow from a major shear zone along the margin of an apophysis of the batholith. Hailey Hot Springs, with temperatures up to 60/sup 0/C, occur in an area of multiple thrust faults and newly recognized, closely spaced normal faults in the Paleozoic Milligen and Wood River Formations, 2.5 km from a highly brecciated batholith contact. Other Wood River district hydrothermal systems also occur along the margins of batholith apophyses or in adjacent highly fractured Paleozoic rocks, where there are indications of batholith rocks at shallow depths (100 to 300 m) in water wells.

• Research Organization: Utah Univ., Salt Lake City (USA). Earth Science Lab.
• DOE Contract Number: AC07-79ID12079
• OSTI ID: 6838222
• Report Number(s): DOE/ID/12079-107; ON: DE84012190
• Country of Publication: United States
• Language: English

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