Earth Science 3 4

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Earth Science 3 4

  1. 1. Metamorphic Rocks 3.4 <br />
  2. 2. Metamorphism <br />The changes in mineral composition and texture of a rock subjected to high temperature and pressure within Earth.<br />
  3. 3. Contact Metamorphism <br />Changes in a rock caused by the heat from a nearby magma body.<br />
  4. 4. Regional Metamorphism<br />Metamorphism associated with large-scale mountain-building processes.<br />
  5. 5. Hydrothermal Solution <br />The hot, watery solution that escapes from a mass of magma during the later stages of crystallization; such solutions may alter the surrounding rock.<br />
  6. 6. Foliated Metamorphic Rock<br />A metamorphic rock with a texture that gives the rock a layered appearance <br />
  7. 7. Nonfoliated Metamorphic Rock<br />Metamorphic rock that does not exhibit a banded or layered appearance.<br />
  8. 8. Key Concept<br />Where does most metamorphism take place?<br />Most metamorphic changes occur at elevated temperatures and pressures. These conditions are found a few kilometers below Earth’s surface and extend into the upper mantle.<br />
  9. 9. Key Concept<br />How is contact metamorphism different from regional metamorphism?<br />Contact metamorphism hot magma moves into rock and Regional metamorphism results in large-scale deformation and high-grade metamorphism.<br />
  10. 10. Key Concept<br />What are three agents of metamorphism, and what kinds of changes does each cause?<br />The agents of metamorphism are heat, pressure, and hydrothermal solutions.<br />
  11. 11. Key Concept<br />How are metamorphic rocks classified?<br />They are classified by their texture.<br />

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