National Geologic Map Database
General Information
- Title: Origin of thick Lower Tertiary coal beds in the Powder River Basin, Wyoming and Montana - some paleogeographic constraints
- Author(s): Seeland, David
- Publishing Organization: U.S. Geological Survey
- Series and Number: Bulletin 1917-Q
- Larger Work: Evolution of sedimentary basins - Powder River Basin
- Publication Date: 1993
- Map Scale: 1:1,670,000
- Cross Section: None
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