Portland State University. Department of Geology
Michael L. Cummings
Date of Publication
Master of Science (M.S.) in Geology
Metasomatism (Mineralogy), Metamorphism (Geology) -- Montana -- Tobacco Root Mountains, Amphibolite -- Montana -- Tobacco Root Mountains, Ultrabasic rocks -- Montana -- Tobacco Root Mountains, Geology -- Montana -- Tobacco Root Mountains
1 online resource (155 p.)
The purpose of this study is to characterize the metasomatism that has taken place as a result of the chemical incompatibility between mafic and metaultramafic bulk compositions during high-grade regional metamorphism in the Tobacco Root Mountains, southwest Montana. Metasomatism of these rocks took place by both diffusionand infiltration-dominated processes. The result of these processes are characterized mineralogically and geochemically in the rocks.
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McCulloch, William Robert, "Metasomatism between amphibolite and metaultramafic rocks during upper amphibolite facies metamorphism, Tobacco Root Mountains, southwest Montana" (1988). Dissertations and Theses. Paper 3904.