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General Information

  • Title: Riddle folio, Oregon
  • Author(s): Diller, J.S., and Kay, G.F.
  • Publishing Organization: U.S. Geological Survey
  • Series and Number: Geologic Atlas of the United States Folio GF-218
  • Publication Date: 1924
  • Map Scale: 1:125,000
  • Cross Section: Yes
  • North Latitude: 43° 0' 0" N (43.0000)
  • South Latitude: 42° 30' 0" N (42.5000)
  • East Longitude: 123° 0' 0" W (-123.0000)
  • West Longitude: 123° 30' 0" W (-123.5000)
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.