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The Lakeview Mountains pluton is a concordant teardrop-shaped pluton located at a marked deflection of the structural grain of the prepluton rocks within the northern Peninsular Ranges batholith. This dynamically emplaced 100 Ma pluton lies within the western transition zone and consists of biotite-hornblende tonalite that lacks K-feldspar. The pluton is characterized by ubiquitous schlieren that range from black hornblende-biotite rock to near-white quartz-plagioclase rock, imparting an extreme outcrop-scale mineral and chemical heterogeneity to the pluton. Geometrically, the schlieren define three structural sets; one is concordant, and the other two constitute a northeast- and northwest-oriented conjugate set. The orientation of...

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