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Composite Volcanoes
Quick revise
Composite volcanoes are the most deadly of volcano types.
They are made of alternate layers of ash and lava and have steep sides built up by eruptions of intermediate viscosity andesitic lava and explosive tephra.
Often the lava cools creating a plug which blocks the vent resulting in a huge explosion blowing out the plug
Example: Mount St Helens in Alaska (USA), Mount Shasta in California, Mount Rainier in Washington state, and Mount Fuji in Japan.
