Washington, DC: United States Geological Survey/USGS/Government Printing Office/GPO, 1981. Softcover. Item #46169
This report describes in detail the petrology, stratigraphic relations, paleontology, inferred age, and depositional enviroment of each formation, with the areal distribution of each shown on the geologic maps. 51 pages with photographs, sections, tables and references, with the two folded map plates in the rear pocket.. Bound in original tan stiff paper covers with printing in dark brown. Stamp of geologist Richard H. Jahns on the front cover. A very good plus copy.