National Geologic Map Database
General Information
- Title: Reconnaissance geologic map of the John Day Formation in the southwestern part of the Blue Mountains and adjacent areas, north-central Oregon
- Author(s): Robinson, P.T.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Miscellaneous Investigations Series Map I-872
- Publication Date: 1975
- Map Scale: 1:125,000
- Cross Section: Yes
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- U.S. Geological Survey
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.