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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
  • North Latitude: 45° 9' 7" N (45.1520)
  • South Latitude: 44° 30' 0" N (44.5000)
  • East Longitude: 119° 45' 0" W (-119.7500)
  • West Longitude: 121° 7' 26" W (-121.1240)
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.