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| Location | ||||||||||||
The volcano is located in the south-western sector of the Klyuchevskaya group of the volcanoes 63 km from Klyuchi and 343 km from Petropavlovsk-Kamchatsky.
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| Form and structure | ||||||||||||
Ostry Tolbachik and Plosky Tolbachik volcanoes compose a single large volcanic massif. The 1800 m diameter caldera with a depth of 450 m that has been formed in 1975 is nested at the summit of Plosky Tolbachik. |
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| Composition | ||||||||||||
| Basalts and andesibasalts | ||||||||||||
| Age | ||||||||||||
| The later half of Upper Pleistocene | ||||||||||||
| Aviation color code |
GREEN |
| Latest KVERT Releases |
| Hazard synopsis |
Potential danger could be caused by terminal eruptions producing ash clouds to an altitude of 5 km a.s.l. Moreover, explosive eruptions sending ash clouds up to 10 – 15 km a.s.l. are possible in regional zones of cinder cones in the south and north from the volcano. These eruptions could pose a thread to local and international aviation. |
| Monitoring status |
seismic, satellite, visual
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