Investigations of the Dunes geothermal anomaly, Imperial Valley, California. Part I. Geochemistry of geothermal fluids

Technical Report · Thu Aug 01 00:00:00 EDT 1974

OSTI ID:7223541

Coplen, T B; Kolesar, P

A geothermal test borehole, DWR Dunes No. 1, was drilled in the Dunes geothermal anomaly by the State of California Department of Water Resources. Water samples from this geothermal system were collected from perforations at 109 and 260 meters depth. These water samples were analyzed for chemical and isotopic composition. These tests indicate that the source of the geothermal fluid is partially evaporated Colorado River water. An investigation of chloride/bromide ratios was used to determine the source of the salt in the geothermal fluid from Dunes. The result may suggest that the salt in the Salton Sea geothermal system and in the Dunes geothermal anomaly is derived from the Colorado River and that this water has not done any leaching or been mixed with water from other sources. It was determined that further geophysical studies (gravity, seismic refraction, electrical resistivity, and magnetotelluric sounding) are needed to locate the reservoir of geothermal fluid in the Dunes system.

• Research Organization: California Univ., Riverside (USA). Inst. of Geophysics and Planetary Physics
• OSTI ID: 7223541
• Report Number(s): PB-261221; IGPP-UCR-74-18
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150302* -- Geothermal Exploration & Exploration Technology-- Geochemical Techniques & Surveys
BOREHOLES
BROMIDES
BROMINE COMPOUNDS
CALIFORNIA
CAVITIES
CHEMICAL COMPOSITION
CHLORIDES
CHLORINE COMPOUNDS
COLORADO RIVER
FLUIDS
GEOCHEMICAL SURVEYS
GEOPHYSICAL SURVEYS
GEOTHERMAL FIELDS
GEOTHERMAL FLUIDS
GEOTHERMAL WELLS
HALIDES
HALOGEN COMPOUNDS
HYDROLOGY
IMPERIAL VALLEY
ISOTOPE RATIO
KGRA
NORTH AMERICA
RIVERS
SALTON SEA GEOTHERMAL FIELD
STREAMS
SURFACE WATERS
USA
WELLS
WESTERN REGION