Igneous and Metamorphic Rocks
Igneous and Metamorphic Rocks
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