Lithologic interpretation of the De Braga No. 2 and Richard Weishaupt No. 1 geothermal wells, Stillwater project, Churchill County, Nevada
Lithologies penetrated throughout the upper 732 to 838 m (2400 to 2750 ft) within the Stillwater prospect area are terrigenous sediments of Pleistocene to Recent age. A sill of dacite to andesite composition with a thickness variable between 122 to 208 m (400 to 680 ft) is present below the terrigenous sediments. Between the base of the sill and the top of the Bunejug Formation are intercalated volcanic and sedimentary rocks. All formations overlying the Bunejug Formation are probably of Pleistocene age. The basalt and basaltic-andesite flows and ash below the depth of approximately 1128 m (3700 ft) are herein assigned to the Bunejug Formation (Morrison, 1964) of Pliocene and possibly early Pleistocene age. The Bunejug Formation is a thick sequence of basalt to andesite flows and hyaloclastite exposed in the mountains surrounding the south half of the Carson Desert. The De Braga No. 2 well bottomed in Bunejug volcanics at a depth of 2109 m (6920 ft). The Richard Weishaupt No. 1 well penetrated the entire Bunejug sequence and entered felsic volcanics and tuffaceous sediments, which possibly represent part of the Truckee Formation, at a depth of approximately 2412 m (7915 ft).
- Research Organization:
- Utah Univ., Salt Lake City (USA). Research Inst.
- DOE Contract Number:
- AC07-79ID12079
- OSTI ID:
- 5349386
- Report Number(s):
- DOE/ID/12079-57; ESL-70; ON: DE82019935
- Country of Publication:
- United States
- Language:
- English
Similar Records
Petrographic analysis and correlation of volcanic rocks in Bostic 1-A well near Mountain Home, Idaho
Geologic map of the Gulkana B-1 quadrangle, south-central Alaska
Geology and preliminary [sup 40]Ar/[sup 39]Ar geochronology of the Sliderock Mountain volcano, south-central Montana
Technical Report
·
Sat Dec 31 23:00:00 EST 1983
·
OSTI ID:5228770
Geologic map of the Gulkana B-1 quadrangle, south-central Alaska
Book
·
Sat Dec 31 23:00:00 EST 1988
·
OSTI ID:7003950
Geology and preliminary [sup 40]Ar/[sup 39]Ar geochronology of the Sliderock Mountain volcano, south-central Montana
Conference
·
Wed Mar 31 23:00:00 EST 1993
· Geological Society of America, Abstracts with Programs; (United States)
·
OSTI ID:5436110