Theoretical Frameworks and Plate Movements

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  • Theoretical Frameworks and Plate Movements
    • Different Types of Crust
      • Oceanic Crust
        • Thinner
        • Underlines ocean basins
      • Continental Crust
        • Thicker
        • Underlies the continents
    • Mantle
      • It has a temperature gradient
      • The highest temperatures occur where the mantle material is in contact with the heat-producing core
      • Rocks in the upper mantle are cool and brittle
        • Brittle enough to break under stress and produce earthquakes
      • Rocks in the lower mantle are hot and plastic
        • Flow when subjected to force
    • The Benioff Zone and Subduction Processes
      • Benioff Zone
        • Area of seismicity corresponding with the slab being thrust downwards
        • The site of deep-focused earthquakes

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