National Geologic Map Database
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
- North Latitude: 47° 19' 15" N (47.3208)
- South Latitude: 46° 54' 3" N (46.9008)
- East Longitude: 111° 32' 40" W (-111.5444)
- West Longitude: 112° 22' 48" W (-112.3800)
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