Brooks, W.E., and Marvin, R.F., 1985, Discordant isotopic ages and potassium metasomatism in volcanic rocks from Yavapai County, Arizona [abs.]: Geological Society of America Abstracts with Programs, v. 17, no. 6, p. 344.
Brooks, W.E., 1988, Recognition and geologic implications of potassium metasomatism in upper-plate volcanic rocks at the detachment fault at the Harcuvar Mountains, Yavapai County, Arizona: U.S. Geological Survey Open-File Report 88-0017, 9 p.
Brooks, W.E., 1987, Spatial relationship of K2O metasomatism and base metals to the Picacho Peak detachment fault, Pinal County, Arizona [abs.]: Geological Society of America Abstracts with Programs, v. 19, no. 7, p. 602.
Brooks, W.E., 1986, Distribution of anomalously high K2O volcanic rocks in Arizona: Metasomatism at the Picacho Peak detachment fault: Geology, v. 14, no. 4, p. 339-342.
Brooks, W.E., 1985, Analyses of upper-plate volcanic rocks at Picacho Peak, Pinal County, Arizona: U.S. Geological Survey Open-File Report 85-0740, 5 p.
Bartley, J.M., and Glazner, A.F., 1985, Hydrothermal systems and Tertiary low-angle normal faulting in the southwestern United States: Geology, v. 13, no. 8, p. 562-564.