Geologic framework and hot dry rock geothermal potential of the Castle Dome area, Yuma County, Arizona [electronic resource].

Published:: Los Alamos, N.M. : Los Alamos Scientific Laboratory, 1981.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: Pages: 24 : digital, PDF file
Additional Creators:: Los Alamos Scientific Laboratory and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

The Castle Dome Mountains and surrounding ranges constitute a voluminous pile of silicic volcanic rocks within the Basin and Range province of southwestern Arizona. Previously reported as Cretaceous and Quaternary in age, these volcanics all are of late Oligocene to early Miocene age as indicated by five new K-Ar dates. Reconnaissance field studies indicate that the volcanic section locally has undergone large rotations that contrast with the usual structural style of the Basin and Range and resemble the thin-skinned rotational tectonics documented for earlier, mid-Tertiary extensional deformation in ranges to the north and northeast. Significant geothermal potential of the Castle Dome area is suggested by a shallow depth to the Curie isotherm and by the apparent presence of a good electrical conductor at anomalously shallow depth in the crust. Warm wells exist in the area and Shearer (1979) reported a geothermal gradient of about 70/sup 0/C/km in a dry well near the center of the gravity low. Radiogenic heat production in the silicic batholith inferred above constitutes a reasonable candidate for a shallow regional heat source.

Report Numbers:

E 1.99:la-8723-hdr
la-8723-hdr

Subject(s):

Geothermal Energy

Other Subject(s):

Note:

Published through SciTech Connect.
02/01/1981.
"la-8723-hdr"
Gutmann, J.T.

Funding Information:

W-7405-ENG-36

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