Types of Volcanoes
Sheild and Composite volcanoes
- Created by: Jenny Jones
- Created on: 19-10-13 11:38
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- Volcanoes
- Shield
- Occur at CONSTRUCTIVE plate margins
- Low with gentle sliding slopes
- Formed by eruptions of thin runny, lava
- Eruptions are frequent but gentle
- Composite
- Occur at DESTRUCTIVE plate margins
- Made up of alternating layer of lava and ash
- Eruptions have a pyroclastic flow rather than a lava flow
- PYROCLASTIC: a mixture of hot steam, ash, rock and dust
- A pyroclastic flow can roll down the sides of a volcano at very high speeds and at temperatures of 400 degrees
- Shield
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