Keyes, C.R., 1940, Diversity of Eparchean interval over Cordillera [abs.]: Geological Society of America Bulletin, v. 51, p. 1960. Authors Keyes, C.R. Publication Date 1940 Citation Geological Society of America Bulletin, v. 51, p. 1960. State AZ Province CP TR County CN MO Placenames Marble Canyon Keywords Proterozoic Tectonics More Keywords Proterozoic, Tectonics, AzGeoBib RefNum 5293