1. Geology, structure, and uranium deposits of the Cortez quadrangle, Colorado and Utah Yale Public content 1972. 2012-11-02T20:06:19Z. 2012-11-02T20:06:19Z. Haynes, Donald D. U.S. Geological Survey. English. Public. Colorado, Dolores County, Montezuma County, San Miguel County, Utah, and San Juan County.