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 The Kamchatka Peninsula (russian: полуостров Камчатка, Poluostrov Kamchatka, ) is a peninsula in the Russian Far East, with an area of about . The Pacific Ocean and the Sea of Okhotsk make up the peninsula's eastern and w ...

Russia Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-ei ...

. Together with the Geyzernaya caldera it hosts the largest geothermal field in the Kamchatka Peninsula. The calderas were formed in the mid-

Pleistocene The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fina ...

in several large eruptions that deposited 20–25 km³ of ignimbrite over a wide area. Lake Dalny fills a Holocene maar in the northeast of Uzon Caldera. The Uzon Caldera is a location of the occurrence of

extremophile An extremophile (from Latin ' meaning "extreme" and Greek ' () meaning "love") is an organism that is able to live (or in some cases thrive) in extreme environments, i.e. environments that make survival challenging such as due to extreme tem ...

micro-organisms due to its high localized temperatures.(C.Michael Hogan. 2010)

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 {{volcanology-stub

See also

References