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General Information

  • Title: Geologic map of Mount St. Helens, Washington prior to the 1980 eruption
  • Author(s): Hopson, C.A.
  • Publishing Organization: U.S. Geological Survey
  • Series and Number: Open-File Report OF-2002-468
  • Publication Date: 2008
  • Map Scale: 1:31,250
  • Cross Section: None
  • North Latitude: 46° 16' 54" N (46.2817)
  • South Latitude: 46° 3' 5" N (46.0514)
  • East Longitude: 122° 4' 21" W (-122.0725)
  • West Longitude: 122° 20' 54" W (-122.3483)
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