geology

global tectonics:

  • solar system
  • structure of the earth
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  • Created by: roxiie
  • Created on: 06-04-13 12:09

1. this is the third and fourth layers of the earths structure, these are called plastic solids (they are not true solids, the heat keeps them unstable and just about at melting point) these layers move VERY slowly

  • upper and lower mantle
  • inner core
  • atmosphere
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2. The upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection (this is because this layer is 5% molten)

  • asthenosphere
  • outer core
  • upper mantle

3. is ancient magnetism preserved in rocks

  • ironisation
  • palaeo magnetism (PM)
  • magnetism

4. slices of oceanic crust found on land ( this happens when part of the oceanic crust splinters of during subduction)

  • ophiolites
  • ompipheldes
  • muscovite

5. the centre of the earth, its a solid

  • inner core
  • outer core
  • asthenosphere
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