Resource investigation of low- and moderate-temperature geothermal areas in San Bernardino, California. Part of the third year report, 1980-81, of the US Department of Energy-California State-Coupled Program for Reservoir Assessment and Confirmation

Technical Report · Sat Aug 01 04:00:00 EDT 1981

DOI:https://doi.org/10.2172/6951295· OSTI ID:6951295

Youngs, L G; Bezore, S P; Chapman, R H; Chase, G W

Ninety-seven geothermal wells and springs were identified and plotted on a compiled geologic map of the 40-square-mile study area. These wells and springs were concentrated in three distinguishable resource areas: Arrowhead Hot Springs; South San Bernardino; and Harlem Hot Springs - in each of which detailed geophysical, geochemical, and geological surveys were conducted. The Arrowhead Hot Springs geothermal area lies just north of the City of San Bernardino in the San Bernardino Mountains astride a shear zone (offshoot of the San Andreas fault) in pre-Cambrian gneiss and schist. The Harlem Hot Springs geothermal area, on the east side of the City, and the south San Bernardino geothermal area, on the south side, have geothermal reservoirs in Quaternary alluvial material which overlies a moderately deep sedimentary basin bound on the southwest by the San Jacinto fault (a ground water barrier). Geothermometry calculations suggest that the Arrowhead Hot Springs geothermal area, with a maximum reservoir temperature of 142/sup 0/C, may have the highest maximum reservoir temperature of the three geothermal areas. The maximum temperature recorded by CDMG in the south San Bernardino geothermal area was 56/sup 0/C from an artesian well, while the maximum temperature recorded in the Harlem Hot Springs geothermal area was 49.5/sup 0/C at 174 meters (570 feet) in an abandoned water well. The geophysical and geological surveys delineated fault traces in association with all three of the designated geothermal areas.

• Research Organization: California State Dept. of Conservation, Sacramento (USA). Div. of Mines and Geology
• DOE Contract Number: FG03-80SF10855
• OSTI ID: 6951295
• Report Number(s): DOE/SF/10855-T1; ON: DE82020721
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150300* -- Geothermal Exploration & Exploration Technology
ABANDONED WELLS
CALIFORNIA
CHEMISTRY
FEDERAL REGION IX
GEOCHEMICAL SURVEYS
GEOCHEMISTRY
GEOLOGIC FAULTS
GEOLOGIC STRUCTURES
GEOPHYSICAL SURVEYS
GEOTHERMAL RESOURCES
GEOTHERMAL WELLS
GEOTHERMOMETRY
Geothermal Legacy
HYDROLOGY
MAPS
NORTH AMERICA
RESOURCE ASSESSMENT
RESOURCES
SEISMICITY
SURVEYS
TEMPERATURE MEASUREMENT
THERMAL SPRINGS
USA
WATER SPRINGS
WELLS