Igneous and Metamorphic Rocks
Igneous and Metamorphic Rocks
Igneous and Metamorphic Rocks
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Where does the heat come from?<br />
• Hot magma ranges from 700-12000C. Causes contact metamorphism. p<br />
• Deep burial - temperature increases 15-300C for every kilometer of depth in the crust. crust<br />
Subduction <strong>and</strong> continental collision bury<br />
rocks to depths of 10’s 10 s of kms kms. This is<br />
regional metamorphism. Most<br />
metamorphic rocks form this way.<br />
way
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