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Np complete

  1. 1. IGNEOUS ROCKS
  2. 2. Where Does Igneous Rock Form?
  3. 3. I. FORMATION OF IGNEOUS ROCKS
  4. 4. A. Igneous rocks form directly from the _____________ and _____________ solidification crystallization
  5. 5. of _____molten rock to form _______ rock solid liquid
  6. 6. FOUNTAINING
  7. 7. FISSURE ERUPTION
  8. 9. LAVA FLOW
  9. 11. LAVA FLOW OVER A ROAD
  10. 12. LAVA FLOW THROUGH FORREST
  11. 13. Kilauea, HI 2003
  12. 14. Kilauea, HI , 2003
  13. 16. Mt. ST. Helens
  14. 17. Volcanic crater
  15. 18. crazy vulcanist
  16. 19. SKY LIGHT
  17. 26. B. _____________ is the process when a liquid rock cools, crystallization
  18. 27. and it changes to a solid made of ________ ___________ INTERGROWN CRYSTALS
  19. 29. GRANITE MICROSCOPIC VIEW
  20. 30. 2. CLASSIFICATION OF IGNEOUS ROCKS:
  21. 31. A. 2 characteristics that are used to classify igneous rocks:
  22. 32. <ul><li>1. ______________ </li></ul><ul><li>2. ______________ </li></ul>texture mineral composition
  23. 34. B. Texture of an igneous rock describes the
  24. 35. _________, __________ and ____________ of the mineral crystals it was made from. size shape arrangement
  25. 36. C. The ______ of the crystals depends on the _______________________ size Rate of cooling
  26. 37. Slow cooling = ____________ large crystals
  27. 39. MINERAL CRYSTALS
  28. 40. GABBRO
  29. 41. Fast cooling = ____________ fine crystals Or no crystals (glassy)
  30. 42. GLASSY TEXTURE: OBSIDIAN
  31. 43. BASALT: FINE CRYSTALS
  32. 44. BASALT MICROSCOPIC VIEW
  33. 45. Granite: Coarse crystals Basalt: Fine crystals (Microscopic views)
  34. 46. FINE CRYSTAL: RYOLITE
  35. 47. 3 . EXTRUSIVE IGNEOUS ROCKS: <ul><li>A. _____________ occurs when molten (liquid) rock flows out of the earth as </li></ul><ul><li>________________ </li></ul>Extrusions lava
  36. 48. lava magma
  37. 49. And cools __________ quickly
  38. 50. <ul><li>to form </li></ul><ul><li>fine or no </li></ul><ul><li>____________ </li></ul>crystals
  39. 51. gas pockets Vesicular basalt
  40. 52. This rock if full of gas pockets frothy texture (vesicular)
  41. 53. <ul><li>B. </li></ul><ul><li>To form magma, </li></ul><ul><li>____________ </li></ul><ul><li>must be melted. </li></ul>minerals
  42. 54. <ul><li>C. Minerals melt </li></ul><ul><li>at different </li></ul><ul><li>____________ and ___________ </li></ul>temperatures pressures
  43. 55. <ul><li>D. Igneous rocks of different </li></ul><ul><li>____________ </li></ul>composition
  44. 56. <ul><li>Can form from the same body of ____________ </li></ul>magma
  45. 57. 4. INTRUSIVE IGNEOUS ROCKS : <ul><li>A. _____________ occurs when molten </li></ul><ul><li>rock beneath the surface </li></ul>Intrusions (magma)
  46. 58. <ul><li>cools </li></ul><ul><li>____________ </li></ul><ul><li>to form </li></ul><ul><li>_____________ </li></ul>slowly coarse crystals
  47. 59. Granite: Coarse crystals Basalt: Fine crystals (Microscopic views)
  48. 61. 5. FELSIC <ul><li>A. Igneous rocks of the continental crust are rich in </li></ul><ul><li>_________ density </li></ul><ul><li>_________ colored </li></ul><ul><li>minerals </li></ul>low light (granitic)
  49. 62. 6. MAFIC <ul><li>A. Igneous rocks of the ocean floor are rich in </li></ul><ul><li>_________ density </li></ul><ul><li>_________ colored </li></ul><ul><li>minerals </li></ul>high dark (basaltic)
  50. 64. Comparing Oceanic Crust To Continental Crust
  51. 65. <ul><li>Continental Crust: </li></ul><ul><li>1. </li></ul><ul><li>2. </li></ul><ul><li>3. </li></ul><ul><li>4. </li></ul><ul><li>5. </li></ul>low density light color felsic granitic thick
  52. 66. <ul><li>Oceanic Crust : </li></ul><ul><li>1. </li></ul><ul><li>2. </li></ul><ul><li>3. </li></ul><ul><li>4. </li></ul><ul><li>5. </li></ul>high density dark color mafic basaltic thin
  53. 67. Complete the Activity <ul><li>Use this diagram in your ESRT to answer the following: </li></ul><ul><li>  </li></ul><ul><li>What is the temperature for the interface between the following… </li></ul><ul><li>inner core and outer core? 6250° C </li></ul><ul><li>Outer core and stiffer mantle? 5000° C </li></ul><ul><li>  </li></ul><ul><li>Stiffer Mantle and athenosphere? 2600° C </li></ul><ul><li>  </li></ul><ul><li>Asthenosphere and lithosphere? 750° C </li></ul>
  54. 68. <ul><li>What is the depth of the interface between the stiffer mantle and the outer core? 2900 KM </li></ul><ul><li>  </li></ul><ul><li>State the relationship between depth and pressure :As depth increase pressure increases </li></ul><ul><li>State the relationship between depth and temperature: </li></ul><ul><li>As depth increases temperature increases </li></ul>
  55. 70. When rocks melt, bonds broken. Crystalline solid no longer exists. MELTING ROCKS AND CRYSTALLIZING MAGMA Rock magma magma rock
  56. 71. <ul><li>Hot liquid contains still solid fragments </li></ul><ul><li>Minerals melt at different temperatures </li></ul><ul><li>Melting causes changes in magma composition </li></ul>MELTING ROCKS AND CRYSTALLIZING MAGMA Rock magma magma rock
  57. 72. <ul><li>Cooling of hot liquid allows crystallization of minerals </li></ul><ul><li>Bonds are re-established </li></ul><ul><li>Crystalline structure grows until edges touch adjacent crystals </li></ul><ul><li>Minerals crystallize at different temperatures </li></ul>MELTING ROCKS AND CRYSTALLIZING MAGMA Rock magma magma rock
  58. 73. OK……….. TAKE OUT YOUR REFERENCE TABLE
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