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National Geologic Map Database

General Information

  • Title: Bouguer gravity, aeromagnetic, and generalized geologic map of the western part of the Three Forks Basin, Broadwater, Madison, and Gallatin Counties
  • Author(s): Davis, W.E., Kinoshita, W.J., and Robinson, G.D.
  • Publishing Organization: U.S. Geological Survey
  • Series and Number: Geophysical Investigations Map GP-497
  • Publication Date: 1965
  • Map Scale: 1:62,500
  • Cross Section: None
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.