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Low-temperature geothermal assessment of the Santa Clara and Virgin River Valleys, Washington County, Utah

Technical Report ·
DOI:https://doi.org/10.2172/6908095· OSTI ID:6908095
Exploration techniques included the following: (1) a temperature survey of springs, (2) chemical analyses and calculated geothermometer temperatures of water samples collected from selected springs and wells, (3) chemical analyses and calculated geothermometer temperatures of spring and well water samples in the literature, (4) thermal gradients measured in accessible wells, and (5) geology. The highest water temperature recorded in the St. George basin is 42/sup 0/C at Pah Tempe Hot Springs. Additional spring temperatures higher than 20/sup 0/C are at Veyo Hot Spring, Washington hot pot, and Green Spring. The warmest well water in the study area is 40/sup 0/C in Middleton Wash. Additional warm well water (higher than 24.5/sup 0/C) is present north of St. George, north of Washington, southeast of St. George, and in Dameron Valley. The majority of the Na-K-Ca calculated reservoir temperatures range between 30/sup 0/ and 50/sup 0/C. Anomalous geothermometer temperatures were calculated for water from Pah Tempe and a number of locations in St. George and vicinity. In addition to the known thermal areas of Pah Tempe and Veyo Hot Spring, an area north of Washington and St. George is delineated in this study to have possible low-temperature geothermal potential.
Research Organization:
Utah Geological and Mineral Survey, Salt Lake City (USA)
DOE Contract Number:
FG07-84ID12543
OSTI ID:
6908095
Report Number(s):
DOE/ID/12543-2; ON: DE87004787
Country of Publication:
United States
Language:
English