Mtns Lecture

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Mtns Lecture

  1. 1. Mountains form in different ways <ul><li>Fault-block </li></ul><ul><li>Form when huge tilted blocks of rock separated from surrounding rock by large faults </li></ul><ul><li>Folded </li></ul><ul><li>Form by compression forces folding rock layers. </li></ul><ul><li>Unwarped </li></ul><ul><li>Forces push up Earth’s crust and allow the sedimentary rock to erode; leaving igneous or metamorphic rock </li></ul><ul><li>Volcanic </li></ul><ul><li>Layers of lava form a cone-shaped mountain of igneous rock. </li></ul>
  2. 2. Folded Mountains
  3. 6. Fault-Block
  4. 10. Volcanic
  5. 14. Unwarped
  6. 16. Underwater
  7. 17. Mid Ocean Ridge <ul><li>an underwater mountain range formed by plate tectonics. The uplifted sea floor results from convection currents in the mantle. Lava erupts there, creating new crust upon cooling. A mid-ocean ridge makes the boundary between two tectonic plates and is a divergent plate boundary. </li></ul>
  8. 19. Plateau <ul><li>n. pl. pla·teaus or pla·teaux (-t z ) 1. An elevated, comparatively level expanse of land; a tableland. </li></ul>
  9. 20. Island <ul><li>n. A land mass, especially one smaller than a continent, entirely surrounded by water. </li></ul>
  10. 21. Trench/Rift
  11. 23. Mountains form in different ways <ul><li>Fault-block </li></ul><ul><li>Form when huge tilted blocks of rock separated from surrounding rock by large faults </li></ul><ul><li>Folded </li></ul><ul><li>Form by compression forces folding rock layers. </li></ul><ul><li>Unwarped </li></ul><ul><li>Forces push up Earth’s crust and allow the sedimentary rock to erode; leaving igneous or metamorphic rock </li></ul><ul><li>Volcanic </li></ul><ul><li>Layers of lava form a cone-shaped mountain of igneous rock. </li></ul>

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