Bezymianny

Bezymianny
Kamchatka volcanoes: Klyuchevskaya Sopka (up), Bezymianny (down), both in activity, and the Kamen (middle).
Elevation	2,882 m (9,455 ft)
Location
Location	Kamchatka, Russia
Coordinates	55°58′42″N 160°35′12″E
Geology
Type	Stratovolcano
Last eruption	2012

Bezymianny (Russian: Безымянный — lit. unnamed) is an active stratovolcano in Kamchatka, Russia. Prior to its noted 1955-56 eruption, Bezymianny volcano had been considered extinct. The modern Bezymianny volcano, much smaller in size than its massive neighbors Kamen and Kliuchevskoi, was formed about 4700 years ago over a late-Pleistocene lava-dome complex and an ancestral volcano that was built between about 11,000-7000 years ago. Three periods of intensified activity have occurred during the past 3000 years. The latest period, which was preceded by a 1000-year quiescence, began with the dramatic 1955-56 eruption. This eruption, similar to that of Mount St. Helens in 1980, produced a large horseshoe-shaped crater that was formed by collapse of the summit and an associated lateral blast. Subsequent episodic but ongoing lava-dome growth, accompanied by intermittent explosive activity and pyroclastic flows, has largely filled the 1956 crater.

Natural-colour satellite image showing evidence of an eruption at the volcano.

See also

• List of volcanoes in Russia

External links

• "Bezymianny". Global Volcanism Program, Smithsonian Institution. http://www.volcano.si.edu/world/volcano.cfm?vnum=1000-25=. 
• Bezymianny Volcano live webcam
• Holocene Volcanoes in Kamchatka / Bezymianny
• Google Maps satellite image
• Information about Bezymyanny (Russian)