Volcanoes
Plate Tectonics

What are the different types of volcanoes?

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2015-01-26 17:17:42

Volcanoes are grouped into four types: cinder cones, composite

volcanoes, shield volcanoes and lava volcanoes. They are:

Cinder Cones: They are circular or oval cones made up of small

fragments of lava from a single vent. They have been blown into the

air, cooled, and fallen around the vent.

Composite: They are steel-sides and composed of many layers of

volcanic rocks. Mt. Rainier and Mount St. Helens are examples of

this type of volcano.

Shield: Shaped like a bowl or shield in the middle, they have

long gentle slopes made of basaltic lava flows. The volcanoes that

formed the basalt of the Columbia Plateau were shield

volcanoes.

Lava Volcanoes: Deep sided mound formed by lava that is too

thick to flow. The lava piles up near the vent.


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