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General Information

  • Title: 40Ar/39Ar and K-Ar geochronology and tectonic significance of the Upper Cretaceous Adel Mountain Volcanics and spatially associated Tertiary igneous rocks, northwestern Montana
  • Author(s): Harlan, S.S., Snee, L.W., Reynolds, M.W., Mehnert, H.H., Schmidt, R.G., Sheriff, S.D., and Irving, A.J.
  • Publishing Organization: U.S. Geological Survey
  • Series and Number: Professional Paper 1696
  • Publication Date: 2005
  • Map Scale: 1:526,000
  • Cross Section: None
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.