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Unformatted text preview: a. Differential stress i. Shear stress 4. Time a. Tough to build metamorphic rocks in the laboratory as they grow very slowly in nature Classification of metamorphic rocks Both metamorphic environment and parent rock determine rock classification Types of metamorphism Two most common types: 1. Contact metamorphism a. Has temperature as the dominant factor b. Like making ceramics heat but no pressure 2. Regional metamorphism a. Usually occurs deep below the earths surface (at least 5 km), so pressure can be high b. Rock is usually foliated, indicating differential stress c. Produces the greatest volume of metamorphic rock...
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- Fall '08