Tortilla Mts.

Scarborough, R.B., 1979, Report on the general geologic history of the Mesa NTMS quadrangle with accompanying 1:250,000 compilation maps of geology and metallic mineral occurrences: Arizona Bureau of Geology and Mineral Technology Open-File Report 79-03, 78 p., 2 sheets, scale 1:250,000.

Ransome, F.L., 1923, Ray folio, Arizona: U.S. Geological Survey, Geologic Atlas of the United States, Folio no. 217, 24 p. [oversized], 5 sheets, scales 1:12,000 and 1:62,500.

Place, J.L., 1976, Monitoring change in land use over large regions, in ERTS-1, A new window on our planet: U.S. Geological Survey Professional Paper 929, p. 230-233.

Pearthree, P.A., McKittrick, M.A., Jackson, G.W., and Demsey, K.A., 1988, Geologic map of Quaternary and upper Tertiary deposits, Tucson 1o x 2o quadrangle, Arizona: Arizona Geological Survey Open-File Report 88-21, 1 sheet, scale 1:250,000.

Morrison, R.B., 1975, Tucson 1o x 2o quadrangle, ease of excavation and potential erodibility, phases 4 and 5: Arizona Bureau of Geology and Mineral Technology Open-File Report 83-03, 3 p., 1 sheet, scale 1:250,000.

Moore, R.T., and Varga, R.J., comps., 1976, Maps showing nonmetallic mineral deposits in the Phoenix area, Arizona: U.S. Geological Survey Miscellaneous Investigations Series Map I-845-J, 1 sheet, scales 1:250,000, 1:500,000.

Moore, R.T., 1969, Lead and zinc, in Mineral and water resources of Arizona: Arizona Bureau of Mines Bulletin 180, p. 182-205.

Marvin, R.F., and Dobson, S.W., 1979, Radiometric ages: Compilation B, U.S. Geological Survey: Isochron/West, no. 26, p. 3-32.

Luning, R.H., Thiede, D.S., O'Neill, A.J., Nystrom, R.J., and White, D.L., 1982, National Uranium Resource Evaluation, Mesa quadrangle, Arizona: U.S. Department of Energy Report PGJ/F-032(82), 84 p., 4 microfiche, 20 sheets.

Loring, A.K., 1976, The age of basin-range faulting in Arizona, in Wilt, J.C., and Jenney, J.P., eds., Tectonic digest: Arizona Geological Society Digest, v. 10, p. 229-257.