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Oxygen isotope exchange in rocks and minerals from the Cerro Prieto geothermal system [electronic resource] : indicators of temperature distribution and fluid flow

Published
Riverside, Calif. : University of California, Riverside. Institute of Geophysics and Planetary Physics, 1981.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 8 : digital, PDF file
Additional Creators
University of California, Riverside. Institute of Geophysics and Planetary Physics and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Oxygen isotopic compositions have been measured in drill cuttings and core samples from more than 40 wells ranging in depth to more than 3.5 km in the Cerro Prieto geothermal field. Oxygen isotopic profiles of pore-filling calcites in sandstones appear to be a reliable measure of the recent equilibrium temperature distribution in the field before production began. From these data, a detailed, three-dimensional map has been developed, showing the equilibrium temperatures in the geothermal field. A mass balance calculation has been performed using measured /sup 18/O enrichment of the geothermal brine. This calculation implies an overall water; rock volume ratio of approximately 3:1 during the history of the Cerro Prieto system. Paleotemperatures different from the present thermal regime have been studied by examining coexisting mineral systems which exchanged their oxygen with the geothermal brines at different rates.
Report Numbers
E 1.99:conf-810399-1
conf-810399-1
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
01/01/1981.
"conf-810399-1"
"DE82001077"
3. symposium on the Cerro Prieto geothermal field in Baja California, Mexico, San Francisco, CA, USA, Mar 1981.
Williams, A.E.; Elders, W.A.
Funding Information
AT03-80SF11458
View MARC record | catkey: 14386738