Lecture9 rockcycle

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Lecture9 rockcycle

  1. 1. The Rock Cycle
  2. 2. Quiz 3!
  3. 3. Rock cycle metamorphic rocks igneous rocks sedimentary rocks important to note rock types, processes, intermediary states, and shortcuts
  4. 6. IGNEOUS ROCK
  5. 7. Magma cools & solidifies Igneous Rock The Rock Cycle
  6. 8. Weathering- Surface processes that physically disrupt and chemically change rocks
  7. 9. Transport of Weathered Materials
  8. 10. Sediment Deposition
  9. 11. Magma cools & solidifies Igneous Rock Weathering Transport & Deposition Sediment The Rock Cycle
  10. 12. SEDIMENTARY ROCK Lithification 1 mm
  11. 13. cools & solidifies Igneous Rock Weathering Transport & Deposition Sedimentary Rock Lithification The Rock Cycle Magma Sediment
  12. 14. Sedimentary rocks exposed in the Canadian Rockies
  13. 15. cools & solidifies Igneous Rock Weathering Transport & Deposition Sedimentary Rock Lithification Weathering Transport & Deposition The Rock Cycle Magma Sediment
  14. 16. METAMORPHIC ROCKS
  15. 17. cools & solidifies Igneous Rock Weathering Transport & Deposition Sedimentary Rock Lithification Weathering Transport & Deposition Metamorphic Rock Heat & Pressure The Rock Cycle Heat & Pressure Magma Sediment
  16. 18. Limestone- sedimentary rock Marble- metamorphic rock
  17. 19. How is Turkey Like a Metamorphic Rock? Transformed in the Solid State
  18. 20. If there is melting , then it’s not metamorphism
  19. 21. The Rock Cycle cools & solidifies Igneous Rock Weathering Transport & Deposition Sedimentary Rock Lithification Weathering Transport & Deposition Metamorphic Rock Heat & Pressure melting Heat & Pressure melting Magma Sediment melting
  20. 22. The Rock Cycle cools & solidifies Igneous Rock Weathering Transport & Deposition Sedimentary Rock Lithification Weathering Transport & Deposition Metamorphic Rock Heat & Pressure melting Heat & Pressure melting Weathering Transport & Deposition Magma Sediment melting
  21. 23. The Rock Cycle cools & solidifies Igneous Rock Weathering Transport & Deposition Sedimentary Rock Lithification Weathering Transport & Deposition Metamorphic Rock Heat & Pressure melting Heat & Pressure melting Weathering Transport & Deposition Magma Sediment melting
  22. 24. The Rock Cycle cools & solidifies Igneous Rock Weathering Transport & Deposition Sedimentary Rock Lithification Weathering Transport & Deposition Metamorphic Rock Heat & Pressure melting melting Heat & Pressure melting Weathering Transport & Deposition Magma Sediment
  23. 25. Heat & Pressure Heat & Pressure The Rock Cycle cools & solidifies Igneous Rock Weathering Transport & Deposition Sedimentary Rock Lithification Weathering Transport & Deposition Metamorphic Rock melting melting Weathering Transport & Deposition Magma Sediment melting
  24. 26. <ul><li>Earth’s </li></ul><ul><li>Internal structure </li></ul><ul><li>Core (2200 mi) </li></ul><ul><li>Mantle (1800 mi) </li></ul><ul><li>Crust (5-25 mi) </li></ul>
  25. 27. Inner Core Mantle Crust Outer core <ul><li>solid (due to very high pressure) </li></ul><ul><li>composed of Fe & Ni </li></ul><ul><li>7000-9000 °F </li></ul>
  26. 28. Outer Core <ul><li>molten </li></ul><ul><li>composed of Fe & Ni </li></ul><ul><li>5400-7000 °F </li></ul><ul><li>generates magnetic field due to convective flow </li></ul>Inner core Mantle Crust
  27. 29. Mantle Inner core Crust Outer core <ul><li>majority of Earth’s volume </li></ul><ul><li>composed of oxides of Fe, Si, and Mg </li></ul><ul><li>data from volcanic material & experimental work </li></ul><ul><li>- 3300- 5100 °F </li></ul><ul><li>- divided into 3 zones </li></ul>
  28. 30. 3 mantle zones <ul><li>Uppermost mantle </li></ul><ul><ul><li>- rigid </li></ul></ul><ul><li>Asthenosphere </li></ul><ul><ul><li>- plastic </li></ul></ul><ul><ul><li>- moves indpt of lithosphere </li></ul></ul><ul><li>Mesosphere </li></ul><ul><ul><li>- rigid </li></ul></ul>Mesosphere Asthenosphere Uppermost mantle lithosphere mantle
  29. 31. Crust <ul><li>thin, brittle layer </li></ul><ul><li>contains continents & ocean basins </li></ul><ul><li>abundant elements: O, Si, Al, and Fe </li></ul><ul><li>Moho = discontinuity between crust & mantle </li></ul><ul><li>Lithosphere = crust + </li></ul><ul><li>uppermost mantle </li></ul>Mantle Outer core Inner core
  30. 32. Continental vs. oceanic crust Continental Oceanic Thickness thick thin Composition granite basalt Elements Si & Al Fe & Mg Density low high Age old young
  31. 33. Isostasy <ul><li>maintenance of hydrostatic equilibrium of crust </li></ul><ul><li>-AKA buoyancy </li></ul><ul><li>adding weight to crust = sink </li></ul><ul><li>removing weight = rise </li></ul>
  32. 34. Excel Demo

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