Weathering

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AS level geography types of weathering with examples

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Weathering

  1. 1. Weathering
  2. 2. What type of weathering?
  3. 3. The Wind -- Mechanical Weathering in Action!
  4. 4. And this?
  5. 5. Biological Weathering
  6. 6. What type of weathering are these people stood on?
  7. 7. Frost Shattering - Physical
  8. 8. A Little Trickier?
  9. 9. Hydrolysis
  10. 10. Nice View
  11. 11. Sheeting
  12. 12. This is hard
  13. 13. Spheroidal Weathering.
  14. 14. And Finally?
  15. 15. Salt Weathering
  16. 16. Physical Weathering <ul><li>Abrasion </li></ul><ul><li>Crystallization </li></ul><ul><li>Wetting and Drying </li></ul><ul><li>Pressure Release </li></ul><ul><li>Insolation Or thermal weathering </li></ul>
  17. 17. Chemical Weathering <ul><li>Carbonation </li></ul><ul><li>Hydrolysis </li></ul><ul><li>Hydration </li></ul><ul><li>Oxidation </li></ul>
  18. 18. Biological <ul><li>Breakdown of rocks with the chemical or physical actions of a living organism </li></ul><ul><li>Chelation </li></ul><ul><li>Organisms influence moisture regimes </li></ul><ul><li>Organisms influence soil Ph values. </li></ul>
  19. 19. Peltier Weathering Graph
  20. 20. Louis Peltier <ul><li>American physicist and climatologist </li></ul><ul><li>1950 study “The Geographic Cycle in Periglacial Regions as it is Related to Climatic Geomorphology” </li></ul><ul><li>His graph attempts to predict the type and rate of weathering at any given place on Earth </li></ul><ul><li>Doing so from its mean annual temperature and mean annual rainfall. </li></ul>
  21. 21. Questions <ul><li>Waugh Page 38 </li></ul><ul><li>Attempt activities 1 – 5. </li></ul>

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