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Igneous and Metamorphic Rocks

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Kinds of <strong>Metamorphic</strong> <strong>Rocks</strong><br />

•Gneiss-a coarse grained granular rock in<br />

which foliation results from alternating g<br />

layers of light <strong>and</strong> dark minerals.<br />

Compositionally p y similar to ggranite<br />

with<br />

quartz, feldspar, biotite, <strong>and</strong> amphibole.<br />

Forms during gregional g high g ggrade<br />

metamorphism. May grade into migmatite<br />

<strong>and</strong> even granite. g

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