stratovolcano


stratovolcano
ALASKA VOLCANO OBSERVATORY GLOSSARY
also called a stratocone or composite cone
A steep-sided volcano, usually conical in shape, built of lava flows and fragmental deposits from explosive eruptions.
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GLOSSARY OF VOLCANIC TERMS
A generally steep sided volcano composed of alternating layers of lava flows, pyroclastic deposits, and commonly, volcaniclastic sedimentary deposits (Walker, 2000, p. 283). Stratovolcanoes commonly have increasing slopes toward their summits since they generally have mainly lava flows and sedimentary deposits near their base and pyroclastic (tephra) deposits near their summits. Also called a "composite volcano".
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USGS PHOTO GLOSSARY OF VOLCANIC TERMS
Steep, conical volcanoes built by the eruption of viscous lava flows, tephra, and pyroclastic flows, are called stratovolcanoes. Usually constructed over a period of tens to hundreds of thousands of years, stratovolcanoes may erupt a variety of magma types, including basalt, andesite, dacite, and rhyolite. All but basalt commonly generate highly explosive eruptions. A stratovolcano typically consists of many separate vents, some of which may have erupted cinder cones and domes on the volcano's flanks. A synonym is composite cone.
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Photograph by R. McGimsey on 15 July 1990
Mount Mageik volcano viewed from the Valley of Ten Thousand Smokes, Katmai National Park and Preserve, Alaska. Mageik's broad summit consists of at least four separate structures built above different vents.
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Did you know?
Of Earth's 1,511 volcanoes known to have erupted in the past 10,000 years, 699 are stratovolcanoes.
Earth's highest volcano is a stratovolcano; Nevado Ojos del Salado in Chile is 6,887 m above sea level. The highest volcano with historic eruptions is Llullaillaco, Chile, at 6,739 m. Both volcanoes are located in the northern Chilean Andes.
Mount St. Helens is the youngest stratovolcano in the Cascades and the most active. Geologists have identified at least 35 layers of tephra erupted by the volcano in the past 3,500 years.
Mount Shasta is the largest stratovolcano in the Cascades.

Glossary of volcanic terms. - University of Wisconsin Oshkosh. . 2001.

Look at other dictionaries:

  • stratovolcano — (n.) coined in German (von Seebach, 1866), from strato , comb. form of stratus (see STRATUM (Cf. stratum)) + VOLCANO (Cf. volcano). So called for its composite structure …   Etymology dictionary

  • Stratovolcano — Mount Fuji, an active stratovolcano in Japan that last erupted in 1707–08 …   Wikipedia

  • stratovolcano — noun Etymology: New Latin stratum + English o + volcano Date: 1937 a volcano composed of explosively erupted cinders and ash with occasional lava flows …   New Collegiate Dictionary

  • stratovolcano — strat·o·vol·ca·no (străt ō vŏl kāʹnō, strā tō ) n. pl. strat·o·vol·ca·nos A volcano composed of alternating layers of lava and ash.   [stratum + volcano.] * * * …   Universalium

  • stratovolcano — noun A tall conical volcano, composed of layers (or strata) of hardened lava, tephra and ash …   Wiktionary

  • stratovolcano —    A volcano that is constructed of alternating layers of lava and pyroclastic deposits, along with abundant dikes and sills. Viscous, acidic lava may flow from fissures radiating from a central vent, from which pyroclastics are ejected.… …   Glossary of landform and geologic terms

  • stratovolcano — [ˌstratəʊvɒl keɪnəʊ] noun (plural stratovolcanoes) a volcano built up of alternate layers of lava and ash …   English new terms dictionary

  • stratovolcano — strato·volcano …   English syllables

  • stratovolcano — /strætoʊvɒlˈkeɪnoʊ/ (say stratohvol kaynoh) noun a volcano consisting of layers of lava alternating with ash and pyroclastic rocks. Compare shield volcano. {strato (def. 2) + volcano} …   Australian English dictionary

  • stratovolcano — |stra]d.ō, rā] also rä] or rȧ]+ noun Etymology: New Latin stratum + English o + volcano; from its cone s being built up of successive layers of ash and lava : a volcano composed of explosively erupted cinders and ash with occasional lava flows… …   Useful english dictionary


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