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National Geologic Map Database

General Information

  • Title: Geologic and structure contour map of the northern and western flanks of the Black Hills, Wyoming, Montana, and South Dakota
  • Author(s): Mapel, W.J., Robinson, C.S., and Theobald, P.K.
  • Publishing Organization: U.S. Geological Survey
  • Series and Number: Oil and Gas Investigations Map OM-191
  • Publication Date: 1959
  • Map Scale: 1:96,000
  • Cross Section: None
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.