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TYPES OF VOLCANOES. FOUR TYPES OF VOLCANOES. Shield volcanoes Cinder cones Composite cones Plug domes . Four Types Of Volcanoes. Shield Volcanoes Numerous basaltic lava flows piling up Gently sloping, dome shaped cone Not very explosive, although still dangerous.
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FOUR TYPES OF VOLCANOES • Shield volcanoes • Cinder cones • Composite cones • Plug domes
Four Types Of Volcanoes Shield Volcanoes • Numerous basaltic lava flows piling up • Gently sloping, dome shaped cone • Not very explosive, although still dangerous
One example of a shield volcano is the one that is found in Hawaii
Four Types Of Volcanoes Cinder Cones • Smallest type of volcano • Rhyolite composition • Steep, straight sides • Large crater in the center • Craters of the Moon, ID • Sunset Crater, AZ
One example of a cinder cone volcano is Paricutin found in Mexico
Four Types Of Volcanoes Composite Cones • Effusive or explosive • Composite of lava and pyroclastics • Stratovolcanoes • Pyroclastic flows • Concave slopes that are gentle near the base and steep near the top.
(a) Is a image of a plug dome volcano before eruption, (b) Is a image of the same volcano after an eruption.
Four Types Of Volcanoes Plug Domes • Viscous silica-rich magma pushed into a vent • Dome shaped summit and jagged blocks make up cone on steep sloping sides
Lassen Peak located in the USA http://www.youtube.com/watch?feature=player_detailpage&v=R0Zbj7S22zs