National Geologic Map Database
General Information
- Title: A geological reconnaissance in northern Idaho and northwestern Montana with notes on the economic geology
- Author(s): Calkins, F.C., and MacDonald, D.F.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Bulletin 384
- Publication Date: 1909
- Map Scale: 1:1,430,000
- Cross Section: None
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- Links and Downloads:
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.