. Describe the classification of volcanoes
based on the eruptions.
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Two basic classifications of volcanoes are based upon the type of eruption they produce:
- explosive (or central) and quiet (or fissure).
- Eruptions are rapid and violent, often spewing lava, ash and volcanic material high into the air.
- Quiet eruptions usually emit great volumes of lava along a long fissure or fracture.
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Two basic classifications of volcanoes are based upon the type of eruption they produce: explosive (or central) and quiet (or fissure). Explosive eruptions are caused by the buildup of gasses under highly viscous (thick and slow-flowing) magma trapped deep within the volcano. Eruptions are rapid and violent, often spewing lava, ash and volcanic material high into the air. Quiet eruptions usually emit great volumes of lava along a long fissure or fracture. Lavas typically have low viscosities so the gases are not prevented from readily escaping.
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