Stratovolcano


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Related to Stratovolcano: Composite volcano

stratovolcano

[¦strad·ō·väl′kā·nō]
(geology)
A volcano constructed of lava and pyroclastics, deposited in alternating layers. Also known as composite volcano.

Stratovolcano

 

(also composite volcano), a volcano whose cone is composed of alternating flows of hardened lava and lava fragments (blocks, bombs, lapilli) that have become cemented together and turned into tuff.

Stratovolcanoes are formed during the outpouring of lavas and during volcanic eruptions. Many have a conical shape and range in elevation from several hundred meters to several kilometers. The slopes of the cone are relatively steep at the peak and flatten out toward the foot. The crater is in the form of a depression that ranges in diameter from several dozen meters to 2–3 km. Examples of stratovolcanoes include Kliuchevskaia Sopka and Kar-ymskaia Sopka of Kamchatka (USSR) and Mount Fuji (Japan).

References in periodicals archive ?
2004, Morfological analysis of Nevado de Toluca volcano (Mexico): new insights into the structure and evolution of an andesitic to dacitic stratovolcano.
Petrochemistry and genesis of olivine basalts from small monogenetic parasitic cones of Bazman stratovolcano, Makran arc, southeastern Iran.
ELA 2203 is underlain largely by andesitic volcanic rocks of the ancestral Pliocene Crater Mountain stratovolcano which grew to an immense size before undergoing caldron collapse on a ring fracture system 20 kilometres in diameter, followed by a long period of deep erosion which continued until recent renewed andesitic - dacitic volcanic activity formed a string of smaller parasite cones within and east of the northeast quadrant of the collapse structure.
The Mount Cameroon stratovolcano (Cameroon Volcanic Line, Central Africa): Petrology, geochemistry, isotope and age data.
The White River ash deposits in the Yukon, Northwest Territories and Alaska resulted from two separate eruptions of Mount Churchill-Bono, a stratovolcano near the Alaska-Yukon border (Lerbekmo and Cambell 1969; Richter et al.
The "Ancestral Ruiz" which includes the stratovolcano construction and a small caldera collapse over the period of 1.
Mount Kazbek is a dormant stratovolcano and one of the major mountains of the Caucasus located on the border of Kazbegi District of Georgia and North Ossetia.
Mount Lassen (Lassen Peak) grew as a vent on the northern flank of a collapsed volcano originally named Mount Tehama, a stratovolcano that formed some 400,000 to 600,000 years ago with eruptions estimated to have been 50 times greater than Mount Saint Helens in 1980.
The only Canadian city at risk from a volcanic eruption is Vancouver; this threat arises from the Mount Baker stratovolcano 100 km southeast of Vancouver in the state of Washington (Hickson 1994; Fig.
With its three volcanic cones, Kibo, Mawenzi, and Shira, it is an inactive stratovolcano in north-eastern Tanzania.
Change the viscosity and gas levels to create different kinds of volcanoes: stratovolcano, cinder cone, and shield.