Epidote minerals (the epidote group together with the orthorhombic polymorph zoisite) occur in a wide range of igneous, metamorphic and sedimentary lithologies. Although often present in only small quantities, epidote group minerals can nonetheless be used to generate important quantitative constraints on processes such as regional metamorphism, deep-seated pluton emplacement and uplift, hydrothermal fluid flow, and sedimentary provenance (e.g., Zen and Hammarstrom 1984; Brandon et al. 1996; Cartwright et al. 1996; Keane and Morrison 1997; Spiegel et al. 2002). Petrologic studies on epidote group minerals formed by these and other processes are reviewed in Bird...

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