Geog

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  • Earth's Structure
    • Outer core
      • Iron
      • Liquid state due to heat
    • Inner core
      • Iron & nikel
      • Solid due to pressure
      • Hottest layer
        • 3000 - 5000 Degrees
    • Crust
      • Continental
        • 30 - 60km
        • Younger lighter rock
          • Granite
        • SIAL (Silica + Aluminium)
      • Oceanic
        • 5- 10 km
        • Heavy rock
          • Basalt
        • SIMA (Silica + Magnesium)
    • Mantle
      • 75% of the earth's crust
      • Liquid rock (magma)
      • Greater than 4000 degrees
      • Astheno-sphere
        • Upper Mantle
    • Lithosphere
      • Upper mantle + Crust
      • Untitled

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