Casa Grande area

Titley, S.R., 1982, Geologic setting of porphyry copper deposits, southeastern Arizona, in Titley, S.R., ed., Advances in geology of the porphyry copper deposits, southwestern North America: Tucson, University of Arizona Press, p. 37-58.

Texas Instruments, Inc., 1978, Aerial radiometric and magnetic reconnaissance survey of portions of Arizona-New Mexico - Tucson quadrangle, V. 2-C: U.S. Department of Energy Report GJBX-23(79), 215 sheets, scale 1:500,000.

Smith, G.E.P., 1938, The physiography of Arizona valleys and the occurrence of ground water: Tucson, University of Arizona, College of Agriculture, Agricultural Experiment Station, Technical Bulletin no. 77, 91 p.

Slaff, Steven, Jackson, G.W., and Pearthree, P.A., 1990, Temporal and spatial development patterns of earth fissures in the lower Santa Cruz River basin, Pinal County, Arizona from 1959 to 1989 [abs.]: Geological Society of America Abstracts with Programs, v. 22, no. 3, p. 84.

Slaff, Steven, 1989, Patterns of earth-fissure development--examples from Picacho basin, Pinal County, Arizona: Arizona Geology [Arizona Geological Survey], v. 19, no. 3, p. 4-5.

Schumann, H.H., and Poland, J.F., 1969, Land subsidence, earth fissures and groundwater withdrawal in south-central Arizona, U.S.A., in Land subsidence: Proceedings of the Tokyo Symposium, September 1969, Volume 1: International Association of Scientific Hydrology (IASH), and UNESCO Publication no. 88, p. 295-302.

Schumann, H.H., and Genualdi, R.B., 1986, Land subsidence, earth fissures, and water-level change in southern Arizona: Arizona Bureau of Geology and Mineral Technology Open-File Report 86-14, 1 sheet, scale 1:500,000.

Schumann, H.H., and Genualdi, R.B., 1986, Land subsidence, earth fissures, and water-level change in southern Arizona: Arizona Bureau of Geology and Mineral Technology Map M-23, 1 sheet, scale 1:1,000,000.

Schumann, H.H., 1986, Ground-water depletion and land subsidence in western Pinal County, Arizona, in Conference on Southwestern ground water issues, Tempe, Ariz., 1986, Proceedings: Dublin, Ohio, National Water Well Association, p. 533-552.

Schumann, H.H., 1974, Land subsidence and earth fissures in alluvial deposits in the Phoenix area, Arizona: U.S. Geological Survey Miscellaneous Investigations Series Map I-845-H, 1 sheets, scale 1:250,000.