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Do Now: MINERAL QUIZ - Take out ESRT Pile books between you and your lab partner

Do Now: MINERAL QUIZ - Take out ESRT Pile books between you and your lab partner Hand in test corrections. AIM: What are Metamorphic Rocks.

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Do Now: MINERAL QUIZ - Take out ESRT Pile books between you and your lab partner

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  1. Do Now: • MINERAL QUIZ • - Take out ESRT • Pile books between you and your lab partner • Hand in test corrections

  2. AIM: What are Metamorphic Rocks • Do Now: Take out your ESRT and turn to page 7. Look at the chart called Scheme for Metamorphic Rock identification and answer the questions below. • What textures of Metamorphic rocks will we be working with? • What types of metamorphism are there?

  3. Formation of Metamorphic Rocks • Metamorphism – “to change form” • created from other rocks (parent rocks) • high temperatures and pressures inside Earth cause rocks to change. Schist Slate Gneiss

  4. Contact Metamorphism– Small areas where hot magma touches the rock, results in low grade metamorphism. B. Regional Metamorphism – Large areas, usually under mountains, results in high grade metamorphism and very dense rocks. *This symbol indicates contact metamorphism took place

  5. II. Agents of Metamorphism A. Heat(magma or lava)- allows the minerals to move around and recrystallize. B.Pressure (Stress) – squeezes the rock changing the density and alignment(pattern). How would the density change after metamorphism?

  6. III. Classification of Metamorphic Rocks • Foliated Metamorphic Rocks(pattern) - minerals have aligned and either mineral alignment or banding. Slate Gneiss

  7. B. Nonfoliated Metamorphic Rocks– - does not show a pattern. - has a frosted appearance Quartzite Marble

  8. The comments section gives a accurate description of the rock and it’s parent rock The type of metamorphism section tells you how the rock was created Video on How to read ESRT pg 7 - https://youtu.be/G2U5TUux-cQ

  9. QUICK ACTIVITY Lets look at the texture of Metamorphic rocks

  10. FOLIATED - MINERAL ALIGNMENT ROCK A How would you describe the texture of this rock?

  11. NONFOLIATED ROCK B How would you describe the texture of this rock?

  12. Rock C Foliated – Banding How would you describe the texture of this rock?

  13. How would you describe the texture of this rock? ROCK D FOLIATED – MINERAL ALIGNMENT

  14. How would you describe the texture of this rock? ROCK E FOLIATED – MINERAL ALIGNMENT

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