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General Information

  • Title: Stratigraphy and geologic history of Montana Group and equivalent rocks, Montana, Wyoming, and North and South Dakota
  • Author(s): Gill, J.R., and Cobban, W.A.
  • Publishing Organization: U.S. Geological Survey
  • Series and Number: Professional Paper 776 [37 p.]
  • Publication Date: 1973
  • Map Scale: 1:4,224,000
  • Cross Section: Yes
  • North Latitude: 49° 0' 5" N (49.0014)
  • South Latitude: 40° 59' 41" N (40.9947)
  • East Longitude: 97° 22' 15" W (-97.3708)
  • West Longitude: 113° 16' 6" W (-113.2683)
  • Corrections to this entry?
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.