TY - RPRT TI - Geology and mineral resource potential of the Black Ridge Canyon Wilderness Study Area, Mesa County, Colorado (GEM phase 2) AU - M. I. Toth AU - R. J. Stoneman AU - C. G. Patterson AU - L. L. Jackson PY - 1983 DO - 10.3133/ofr83794 UR - https://pubs.usgs.gov/publication/ofr83794 ID - ofr83794 ER -