Geological and geothermal investigation of the lower Wind River valley, southwestern Washington Cascade Range

Technical Report · Sat Jan 01 00:00:00 EST 1983

DOI:https://doi.org/10.2172/6906441· OSTI ID:6906441

Berri, D A; Korosec, M A

The detailed geology of the lower Wind River valley is presented with emphasis on those factors that bear significantly on development of a geothermal resource. The lower Wind River drainage consists primarily of the Ohanapecosh Formation, an Oligocene unit that is recognized across the entire southern Washington Cascade Range. The formation is at least 300 m thick in the Wind River valley area. It consists largely of volcaniclastic sediments, with minor massive pyroclastic flows, volcanic breccias and lava flows. Low grade zeolite facies metamorphism during the Miocene led to formation of hydrothermal minerals in Ohanapecosh strata. Metamorphism probably occurred at less than 180{sup 0}C.

• Research Organization: Washington State Dept. of Natural Resources, Olympia (USA)
• DOE Contract Number: AC07-79ET27014
• OSTI ID: 6906441
• Report Number(s): DOE/ET/27014-T9; ON: DE84012545
• Resource Relation: Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
WASHINGTON
GEOLOGY
GEOTHERMAL RESOURCES
CASCADE MOUNTAINS
GEOTHERMAL EXPLORATION
GEOTHERMAL SYSTEMS
MAPPING
MAPS
RESERVOIR TEMPERATURE
TEMPERATURE GRADIENTS
THERMAL WATERS
EXPLORATION
FEDERAL REGION X
MOUNTAINS
NORTH AMERICA
RESOURCES
USA
Geothermal Legacy