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1. 1
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   Paleomagnetic and 40 Ar/39 Ar geochronologic data from Late Proterozoic mafic dikes and sills, Montana and Wyoming (1997)

   by Harlan, Stephen S.; Geissman, John William; Snee, Lawrence W. , 1997

   In collection: United States Geological Survey: Professional paper

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2. 2
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   40Ar/39Ar and K-Ar geochronology and tectonic significance of the Upper Cretaceous Adel Mountain volcanics and spatially associated Tertiary igneous rocks, northwestern Montana (2005)

   by Harlan, Stephen S. , 2005

   In collection: United States Geological Survey: Professional paper

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3. 3
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   Geology, age, and tectonic setting of the Cretaceous Sliderock Mountain volcano, Montana: physical and compositional development of an Upper Cretaceous stratovolcano in south-centr... (1998)

   by Du Bray, Edward A.; Harlan, Stephen S. , 1998

   In collection: United States Geological Survey: Professional paper

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4. 4
   local holding

   Petrology of the Crazy Mountains dike swarm and geochronology of associated sills, south-central Montana (2006)

   by Du Bray, Edward A.; Harlan, Stephen S.; Wilson, Anna B. , 2006

   In collection: United States Geological Survey: Professional paper

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   • Table of contents only, Verlag
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