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I. FORMATION OF METAMORPHIC ROCKS:

I. FORMATION OF METAMORPHIC ROCKS:. A metamorphic rock is one whose original form has been __________. changed. BY________ AND _____________. HEAT. PRESSURE. THIS ALTERATION IS CALLED _____________ . RE -CRYSTALLIZATION. These changes are NOT caused by . MELTING.

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I. FORMATION OF METAMORPHIC ROCKS:

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  1. I. FORMATION OF METAMORPHIC ROCKS:

  2. A metamorphic rock is one whoseoriginal form hasbeen __________ changed

  3. BY________ AND _____________ HEAT PRESSURE

  4. THIS ALTERATION IS CALLED _____________ RE-CRYSTALLIZATION

  5. These changes are NOTcaused by MELTING

  6. If the rock melted and cooled it would be an_____________ IGNEOUS ROCK

  7. 1. Changes caused by_____________ RE-CRYSTALLIZATION (again)

  8. May include the creation and growth of________________________ NEW MINERAL CRYSTALS

  9. 2. Rocks which are intensely __________ can also become ____________ rock Compressed metamorphic

  10. MAKING IT MORE DENSE AND RESISTANT TO WEATHERING

  11. The growth of new minerals may cause the rock to appear BANDED

  12. foliated ORSTRIPES OF LIGHT DARK MINERALS

  13. pressure pressure pressure

  14. SCHIST SHOWS BANDING

  15. DISTORT It can also ____________(BEND) OR______________ORIGINAL STRUCTURES DESTROY

  16. 3. There are two types of Metamorphism: Regional A. B. Contact

  17. A.Regional metamorphism: occurs over large areas with extreme pressures & temperatures

  18. Photograph of regional metamorphism New York State thruway

  19. This extreme heat and pressure is what builds MOUNTAINS

  20. B. CONTACT METAMORPHISM

  21. IS THE _________ OF CONTACT WHERE AN IGNEOUS INTRUSION MEETS THE EXISTING ROCK BUT _____________ MELT IT ZONE DOES NOT

  22. Contact metamorphism occurs only at the place where the magma contacts rock SHALE SANDSTONE IGNEOUS INTRUSION LIMESTONE SANDSTONE

  23. Any kind of rock: IGNEOUS SEDIMENTARY METAMORPHIC

  24. CAN UNDERGO RE-CRYSTALLIZATION TO FORM METAMORPHIC ROCK.

  25. PARENT ROCK Is rock from which metamorphic rock is formed.

  26. Limestone metamorphoses to become _________________ marble

  27. Sandstone metamorphoses to become _________________ quartzite

  28. Shale metamorphoses to become _________________ slate

  29. Granite metamorphoses to become _________________ gneiss

  30. We will not find fossils in Metamorphic rock because:

  31. All traces of fossils have been recrystallized

  32. TIME TO WORK ON THE LAB

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