Geology of the Cove Fort-Sulphurdale KGRA

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.

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Metadata Source

Additional Info

Field Value
Citation Date 1979-05-01T00:00:00

Harvest Information

Original ID 0547CF30207148388E427B45A88E5D9D
Index Date 2016-03-17T21:36:46
Original Format ISO-USGIN
Original Version 1.2


Name Moore, J.N. , Samberg, S.M.
Organization Earth Sciences Laboratory, University of Utah Research Institute, Salt Lake City, UT (USA)

Geographic Extent

North Bound 42
South Bound 37
East Bound -109.04
West Bound -114.05