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Crust and plates

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Crust and Plates
From the last lesson we know that the Earth’s crust is a thin fragile layer, made up of Oceanic crust is: Mostly dense basalt 5-10 km thick “Young” No more than 200 million years old Continental crust is mostly less dense granite Up to 50 km thick Very old-rocks up to 3.5 billion years

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Crust and plates

  • 2.
  • 3.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8.
  • 9. From the last lesson we know that the Earth’s crust is a thin fragile layer, made up of Oceanic crust is: Mostly dense basalt 5-10 km thick “Young” No more than 200 million years old Continental crust is mostly less dense granite Up to 50 km thick Very old-rocks up to 3.5 billion years