Stratovolcanoes (composite volcanoes) Volcano

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cross-section through stratovolcano (vertical scale exaggerated):






stratovolcanoes or composite volcanoes tall conical mountains composed of lava flows , other ejecta in alternate layers, strata gives rise name. stratovolcanoes known composite volcanoes because created multiple structures during different kinds of eruptions. strato/composite volcanoes made of cinders, ash, , lava. cinders , ash pile on top of each other, lava flows on top of ash, cools , hardens, , process repeats. classic examples include mount fuji in japan, mayon volcano in philippines, , mount vesuvius , stromboli in italy.


throughout recorded history, ash produced explosive eruption of stratovolcanoes has posed greatest volcanic hazard civilizations. not stratovolcanoes have greater pressure build underlying lava flow shield volcanoes, fissure vents , monogenetic volcanic fields (volcanic cones) have more powerful eruptions, many times under extension. steeper shield volcanoes, slopes of 30–35° compared slopes of 5–10°, , loose tephra material dangerous lahars. large pieces of tephra called volcanic bombs. big bombs can measure more 4 feet(1.2 meters) across , weigh several tons.








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