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Metamorphism

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Author Topic: Metamorphism  (Read 1693 times)
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Rebecca
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« on: May 29, 2007, 11:02:18 pm »



Eclogite Metamorphism:
Moderate Temp./Very High Pressure
Typical Rocks: eclogite
     Eclogite metamorphism takes place in the mantle. The parent rock is ultramafic mantle material, such as peridotite. Eclogite is characterized by a pale green sodic pyroxene (omphacite) and a red garnet (almandine-pyrope), making it a striking rock. Associated minerals are rutile, kyanite, and quartz, and it is not unusual to have retrograde amphibole in the rock too. Since eclogite forms so deep, outcrops are not common.

http://csmres.jmu.edu/geollab/Fichter/MetaRx/MetaKind.html
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