Composite Volcano
Composite Volcanoes are sometimes called Stratovolcanoes. Composite Volcanoes are built by multiple eruptions, sometimes recurring over hundreds of thousands of years.A composite volcano forms in subduction zones when a crustal plate is forced into the mantle and begins to melt. Andesite, dacite and rhyolite lavas are the primary types of lava that form these volcanoes. Eruptions on the volcanoes often alternate between tephra and lava flows.