An Official Web Site of the United States Government

Dipole-dipole resistivity survey of a portion of the Coso Hot Springs KGRA, Inyo County, California

Printer-friendly version

Research and Development

  • Link:http://www.osti.gov/bridge/advancedsearch.jsp
  • Source:http://www.osti.gov/rdprojects
  • Resource Type:Technical Report
  • OSTI Identifier:5778825
  • Published Date:2007-05-13
  • Subject:15 GEOTHERMAL ENERGY; COSO HOT SPRINGS; RESISTIVITY LOGGING; RESISTIVITY SURVEYS; CALIFORNIA; CLAYS; ELECTRICAL SURVEYS; GEOLOGIC MODELS; KGRA; ELECTRIC LOGGING; GEOPHYSICAL SURVEYS; MINERALS; NORTH AMERICA; USA; WELL LOGGING; WESTERN REGION
  • Description:A detailed electrical resistivity survey of 54 line-km was completed at the Coso Hot Springs KGRA in September 1977. This survey has defined a bedrock resistivity low at least 4 sq mi (10 sq km) in extent associated with the geothermal system at Coso. The boundaries of this low are generally well defined to the north and west but not as well to the south where an approximate southern limit has been determined. The bedrock resistivity low merges with an observed resistivity low over gravel fill e ...Show More
  • Description:A detailed electrical resistivity survey of 54 line-km was completed at the Coso Hot Springs KGRA in September 1977. This survey has defined a bedrock resistivity low at least 4 sq mi (10 sq km) in extent associated with the geothermal system at Coso. The boundaries of this low are generally well defined to the north and west but not as well to the south where an approximate southern limit has been determined. The bedrock resistivity low merges with an observed resistivity low over gravel fill east of Coso Hot Springs. A complex horizontal and vertical resistivity structure of the surveyed area has been defined which precludes the use of layered-earth or two-dimensional interpretive models for much of the surveyed area. In general the survey data indicate that a 10 to 20 ohm-meter zone extends from near surface to a depth greater than 750 meters within the geothermal system. This zone is bordered to the north and west by bedrock resistivities greater than 200 ohm-meters and to the south by bedrock resistivities greater than 50 ohm-meters. A combination of observed increases in: (1) fracture density (higher permeability), (2) alteration (high clay content), and (3) temperatures (higher dissolved solid content of ground water) within the bedrock low explain its presence. ...Show Less
MORE LIKE THIS

Explanation

Based on your search keyword(s), we found other relevant matches across various data sources.

© Copyright 2011 Small Business Administration. All rights reserved.