Billingsley, G.H., 1991, Geologic map of the Mustang Knoll quadrangle, northern Mohave County, Arizona: U.S. Geological Survey Open-File Report 91-0560, 12 p., 1 sheet, scale 1:24,000. Authors Billingsley, G.H. Publication Date 1991 Citation U.S. Geological Survey Open-File Report 91-0560, 12 p., 1 sheet, scale 1:24,000. State AZ Province CP County MO Placenames Shivwits Plateau Basins Shivwits Plateau Watersheds Virgin River Keywords Map Bedrock Surficial More Keywords Map, Bedrock, Surficial, Hobble basalt - Pliocene AzGeoBib RefNum 12385