Date: 22 Apr 2011

Metamorphic Rocks

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This chapter deals with the descriptive characterization of metamorphic rocks. Metamorphic rocks are derived from other rocks of igneous, sedimentary or metamorphic origin. The chemical composition of this primary material (=protolith) determines the chemical and mineralogical composition of metamorphic rocks to a large degree. The compositional variation found in the primary material of metamorphic rocks is reviewed in Sect. 2.1.