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    Reconnaissance Assessment of the Geothermal Potential of San Bernardino Valley, Cochise County, Arizona

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    Author
    Stone, C.
    Witcher, J.C.
    Issue Date
    2005
    Keywords
    Arizona Geological Survey Contributed Reports
    Arizona
    Cochise County
    San Bernardino Valley
    groundwater
    bedrock
    volcanic
    geothermal
    Reconnaissance Assessment
    forced convection
    
    Metadata
    Show full item record
    Citation
    Stone, C., and Witcher, J.C., 2005, Reconnaissance Assessment of the Geothermal Potential of San Bernardino Valley, Cochise County, Arizona: Arizona Geological Survey Contributed Report CR-05-A, 79 p.
    Publisher
    Arizona Geological Survey (Tucson, AZ)
    Description
    San Bernardino Valley, Arizona became an area of geothermal interest because of recent volcanic activity ca~ 3 m .y. old), young fault scarps, high geothermometers to 229 degrees C), and a geophysical anomaly. Geothermal leases were initially acquired in about 1979. The highest surface discharge temperature in the valley is 32 degrees C, not 40 degrees C as previously reported. This 32 degree C water occurs at San Bernardino Ranch along the international border. It results from forced convection of deeper ground water as the ground water flows south into Mexico through the constricted basin outlet. The bedrock constriction can be seen on the gravity map. Lateral flow of ground water into this area where the water table is converging with the land surface elevation also contributes to the warm water occurrence. Water that is 27 degrees C at 300 m depth at the northern end of the valley is near the surface at the southern end.
    URI
    http://hdl.handle.net/10150/630833
    Additional Links
    https://library.azgs.arizona.edu/
    Language
    en
    Series/Report no.
    CR-05-A
    Rights
    Arizona Geological Survey. All rights reserved.
    Collection Information
    Documents in the AZGS Document Repository collection are made available by the Arizona Geological Survey (AZGS) and the University Libraries at the University of Arizona. For more information about items in this collection, please contact azgs-info@email.arizona.edu.
    North Bounding Coordinate
    33.0639
    South Bounding Coordinate
    31.3536
    West Bounding Coordinate
    -111.182
    East Bounding Coordinate
    -109.072
    Collections
    AZGS Document Repository

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