CADIGAN, R. A. Geochemical anomalies and alteration in the Moenkopi formation, skull creek, Moffat county, Colorado / by R. A. Cadigan. -- Washington : United States Government Printing Office, 1972 - 21 p. -- (Geological Survey Professional Paper ; 761). Subjects--Topical Terms: ColoradoGeoquímica Universal Decimal Class. No.: 550.4(788)