Plate tectonics part 1
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Plate tectonics part 1

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    Plate tectonics part 1 Plate tectonics part 1 Presentation Transcript

    •  
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      • How are they formed?
      • What are they?
      • An actively deforming region
      *outermost shell of a rocky planet
      • where two (or more) tectonic plates or fragments of lithosphere* move toward one another and collide
      • Oceanic-continental
      • Oceanic-oceanic
    • If one crust is denser than the other The denser Crust is forced under the less dense crust ,into the mantle Process is called subduction and the area it takes place is called the subduction zone
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    • Oceanic plate pushes into and subducts under a continental plate Overriding continental plate is lifted up and a mountain range is created