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THE ROCK CYCLE AND METAMORPHIC ROCKS B20b. METAMORPHIC ROCK HEAT –heat from Earth’s core –rock softens, but does not melt PRESSURE –weight of layers above.

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Presentation on theme: "THE ROCK CYCLE AND METAMORPHIC ROCKS B20b. METAMORPHIC ROCK HEAT –heat from Earth’s core –rock softens, but does not melt PRESSURE –weight of layers above."— Presentation transcript:

1 THE ROCK CYCLE AND METAMORPHIC ROCKS B20b

2 METAMORPHIC ROCK HEAT –heat from Earth’s core –rock softens, but does not melt PRESSURE –weight of layers above reshapes rock and rearranges minerals (B1, Figure 3)

3 FOLIATED METAMORPHIC ROCK When heated and pressed: Minerals can flatten and line up in parallel bands. Rock looks striped (B1, Figure 4)

4 NON-FOLIATED METAMORPHIC ROCK When heated and pressed: Minerals can grow larger, but not line up and flatten. Rock looks “glittery” or “crystal- like”


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