Uzon (russian: Узон) is a 9 by 12 km volcanic
caldera
A caldera ( ) is a large cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcano eruption. When large volumes of magma are erupted over a short time, structural support for the rock above the magma chamber is ...
located in the eastern part of
Kamchatka Peninsula,
Russia. Together with the Geyzernaya caldera it hosts the largest
geothermal field in the Kamchatka Peninsula. The calderas were formed in the mid-
Pleistocene in several large eruptions that deposited 20–25 km
3 of
ignimbrite over a wide area. Lake Dalny fills a Holocene
maar
A maar is a broad, low-relief volcanic crater caused by a phreatomagmatic eruption (an explosion which occurs when groundwater comes into contact with hot lava or magma). A maar characteristically fills with water to form a relatively shallow ...
in the northeast of Uzon Caldera.
The Uzon Caldera is a location of the occurrence of
extremophile micro-organisms due to its high localized temperatures.(C.Michael Hogan. 2010)
See also
*
List of volcanoes in Russia
References
* C.Michael Hogan. 2010
''Extremophile'' eds. E.Monosson and C.Cleveland. Encyclopedia of Earth. National Council for Science and the Environment, Washington DC
*
Volcanoes of the Kamchatka Peninsula
Calderas of Russia
Diatremes of Russia
Volcanic crater lakes
Holocene calderas
Pleistocene calderas
Holocene Asia
Pleistocene Asia
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