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General Information

  • Title: Subsurface stratigraphy of Lower Mesozoic and Upper Paleozoic formations in the basin area of south-central Montana
  • Author(s): Hadley, H.D., Gardner, L.S., and Rogers, C.P.
  • Publishing Organization: U.S. Geological Survey
  • Series and Number: Oil and Gas Investigations Chart OC-19
  • Publication Date: 1945
  • Map Scale: 1:1,980,000
  • Cross Section: None
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.