Portland State University. Department of Geology
Michael L. Cummings
Date of Award
Master of Science (M.S.) in Geology
1 online resource (155 p.)
Metasomatism (Mineralogy), Metamorphism (Geology) -- Montana -- Tobacco Root Mountains, Amphibolite -- Montana -- Tobacco Root Mountains, Ultrabasic rocks -- Montana -- Tobacco Root Mountains, Geology -- Montana -- Tobacco Root Mountains
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.
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.