Browsing by Subject "Petrology -- Montana"
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Geochemistry and Petrography of Amphibolites from the Spuhler Peak Metamorphic Suite: Near the Branham Lakes Area, Tobacco Root Mountains, Southwestern Montana
Located in the west-central Tobacco Root Mountains in southwestern Montana, the Archean-aged Spuhler Peak Metamorphic Suite (SPMS) of Gillmeister (1972) consists of lensoid amphibolite beds, more equant bodies of "wispy" ...