San Cristobal Valley

Leake, S.A., and Clay, D.M., 1979, Maps showing ground-water conditions in the Gila River drainage from Texas Hill to Dome area and in the western Mexican drainage area, Maricopa, Pima, and Yuma Counties, Arizona, 1977: U.S. Geological Survey Water-Resources Investigations Open-File Report 79-1540, 3 sheets, scale 1:1,500,000.

Larson, R.E., and Hoppel, W.A., 1973, Radon 222 measurement below 4 km as related to atmospheric convection: Pure and Applied Geophysics, v. 105, p. 900-906.

Keith, Stanton B., 1978, Index of mining properties in Yuma County, Arizona: Arizona Bureau of Geology and Mineral Technology Bulletin 192, 185 p.

Kahle, K., Conway, D., and Haxel, G., 1978, Preliminary geologic map of the Ajo 1o by 2o quadrangle, Arizona: U.S. Geological Survey Open-File Report 78-1096, 2 sheets, scale 1:250,000.

Gray, Floyd, Miller, R.J., Grubensky, M.J., Tosdal, R.M., Haxel, G.B., Peterson, D.W., May, D.J., and Silver, L.T., 1988, Geologic map of the Ajo and Lukeville 1o by 2o quadrangles, southwest Arizona: U.S. Geological Survey Open-File Report 87-0347, 23 p., 1 sheet, scale 1;250,000.

Gray, Floyd, comp., 1988, Abstracts of the symposium of the geology and mineral deposits of the Ajo and Lukeville 1o x 2o quadrangles, Arizona: U.S. Geological Survey Open-File Report 88-0217, 31 p.

Arizona Geothermal Commercialization Team, 1980, Geothermal development plan: Yuma County: Arizona Bureau of Geology and Mineral Technology Open-File Report 80-08, 22 p.

Danielson, C., 1977, Report on the geothermal potential of Yuma Proving Ground, Luke Air Force Range, Luke Air Force Base, Williams Air Force Base, and Navajo Ordinance Depot - Arizona: unpublished report, 34 p. [available for inspection at Arizona Geological Survey, 416 W. Congress, Suite 100, Tucson, Ariz.].

Conley, J.N., and Koester, E.A., 1972, Well location map, Yuma County, Arizona [includes La Paz County]: Arizona Oil and Gas Conservation Commission, County Well Location Map 2, 1 sheet, scale 1:500,000 [superseded by Conley, J.N., Koester, E.A., and Rauzi, S.L., 1995, Arizona Geological Survey Oil and Gas Publication OG-4].

Chamberlin, E.G., and Richardson, M.L., 1974, Report and interpretations for the general soil map of Yuma County, Arizona: U.S. Department of Agriculture, Soil Conservation Service, 38 p., 1 sheet, scale 1:500,000.