National Geologic Map Database
General Information
- Title: Transgression of the Retort Phosphatic Shale Member of the Phosphoria Formation (Permian) in Idaho, Montana, Utah, and Wyoming
- Author(s): Wardlaw, B.R.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Professional Paper 1163-A [p. A1-A4]
- Larger Work: Wardlaw, B.R., ed., Studies of the Permian Phosphoria Formation and related rocks, Great Basin-Rocky Mountain region
- Publication Date: 1979
- Map Scale: 1:1,191,227
- Cross Section: None
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Additional Resources
- Links and Downloads:
- View the publication from the USGS Publications Warehouse
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.