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A supervolcano is a volcano on a massive scale. It is different from a volcano because:

  • it erupts at least 1,000 km3 of material (a large volcano erupts around 1 km3)
  • it forms a depression, called a caldera (a volcano forms a cone shape)
  • a supervolcano often has a ridge of higher land around it
  • a supervolcano erupts less frequently - eruptions are hundreds of thousands of years apart

The stages in the creation of a supervolcano…


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