Pliocene

Scarborough, R.B., 1984, Cenozoic erosion and sedimentation in Arizona: Arizona Bureau of Geology and Mineral Technology Open-File Report 85-03, 61 p.

Scarborough, R.B., 1979, Cenozoic history and uranium in southern Arizona: Fieldnotes [Arizona Bureau of Geology and Mineral Technology], v. 9, no. 3, p. 1-3, 14-16.

Scarborough, R.B., 1974, Geochronology of Pliocene vitric ash falls in southern Arizona [abs.]: Geological Society of America Abstracts with Programs, v. 6, no. 3, p. 249-250.

Roden, M.F., Smith, D., and Shimizu, N., 1989, Composition of continental lithosphere beneath the Colorado Plateau and its role in the genesis of alkaline magmas [abs.], in Continental Magmatism, IAVCEI, General Assembly, Santa Fe, New Mexico, June 25-July 1, 1989, Abstracts: New Mexico Bureau of Mines and Mineral Resources Bulletin 131, p. 224.

Robinson, Peter, 1972, Tertiary history, in Mallory, W.W., ed.-in-chief, Geologic atlas of the Rocky Mountain region: Denver, Rocky Mountain Association of Geologists, p. 233-242.

Reynolds, S.J., Welty, J.W., and Spencer, J.E., 1986, Volcanic history of Arizona: Fieldnotes [Arizona Bureau of Geology and Mineral Technology], v. 16, no. 2, p. 1-5.

Price, W.E., Jr., 1948, Rim rocks of Sycamore Canyon, Arizona: Tucson, University of Arizona, M.S. thesis, 93 p.

Price, W.E., Jr., 1950, Cenozoic gravels on the rim of Sycamore Canyon, Arizona: Geological Society of America Bulletin, v. 61, no. 5, p. 501-507.

Pedersen, E.P., 1969, Sedimentology and stratigraphy of basin-fill sediments of the Payson Basin, Gila County, Arizona: Tempe, Arizona State University, M.S. thesis, 136 p., 1 sheet, scale 1:32,000.

Otton, J.K., 1978, Tertiary geologic history of the Date Creek Basin, west-central Arizona [abs.]: Geological Society of America Abstracts with Programs, v. 10, no. 3, p. 140-141.