Geology of the Cove Fort-Sulphurdale KGRA

Technical Report · Tue May 01 04:00:00 EDT 1979

DOI:https://doi.org/10.2172/5429076· OSTI ID:5429076

Moore, J N; Samberg, S M

The Cove Fort-Sulphurdale Known Geothermal Resource Area (KGRA) is located on the northwestern margin of the Marysvale volcanic field in southwestern Utah. The geology of the KGRA is dominated by lava flows and ash-flow tuffs of late Oligocene to mid-Miocene age that were deposited on faulted sedimentary rocks of Paleozoic to Mesozoic age. The geothermal system of the Cove Fort-Sulphurdale KGRA is structurally controlled by normal faults. High-angle faults control fluid flow within the geothermal reservoir, while the gravitational glide blocks provide an impermeable cap for the geothermal system in the central part of the field. Surficial activity occurring to the north and south of the glide blocks is characterized by the evolution of hydrogen sulfide and deposition of native sulphur. Intense acid alteration of the aluvium, resulting from downward migration of sulphuric acid, has left porous siliceous residues that retain many of the original sedimentary structures. Detailed logs of Union Oil Company drill holes Forminco No. 1, Utah State 42-7, and Utah State 31-33 are included.

• Research Organization: Utah Univ., Salt Lake City (USA). Research Inst.
• OSTI ID: 5429076
• Report Number(s): DOE/ET/28392-27(5-79)
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150201* -- Geology & Hydrology of Geothermal Systems-- USA-- (-1989)
ALLUVIAL DEPOSITS
BOREHOLES
CAVITIES
GEOLOGIC DEPOSITS
GEOLOGIC STRUCTURES
GEOLOGY
GEOTHERMAL FIELDS
GEOTHERMAL SYSTEMS
Geothermal Legacy
HYDROTHERMAL ALTERATION
HYDROTHERMAL SYSTEMS
IGNEOUS ROCKS
KGRA
MINERALIZATION
NORTH AMERICA
ROCKS
ROCKY MOUNTAIN REGION
STRATIGRAPHY
TUFF
USA
UTAH
VOLCANIC REGIONS
VOLCANIC ROCKS
WELL LOGGING