Volcanoes

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  • Created by: Ellie
  • Created on: 31-05-13 16:39

Formation:

found at constructive & destructive plate margins

Destructive

oceanic subducts under continental as more dense.

Formation:

  • oceanic plate subducts into mantle; melts and destroyed.
  • pool of magma forms
  • magma rises through cracks in crust (vents)
  • magma erupts on surface (where called lava), forming volcano.

Constructive

  • magma rises up into gap formed when plates move apart

some volcanoes form over hot spots (really hot parts of mantle) eg Hawaii

Types of volcano:

Composite:

  • made of ash…

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