Mount St Helens
- Created by: Bethany Watson
- Created on: 16-05-13 16:46
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- Mount St Helens
- Cause
- Juan de Fuca plate forced under the North American Plate.
- Destructive Plate Boundary
- Continental and Oceanic Plates
- Gas bulge appeared on the North side.
- Small movement of plates triggered the eruption.
- Effect
- 200 houses destroyed.
- Caused deforestation
- 63 people killed
- 400m of mountain blown away.
- Response
- Soil fertility improved
- Tourism increased.
- Cost $1.1 billion in total.
- Counselling needed for post traumatic stress
- 10 million trees replanted
- Cause
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