Uzon () 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 volcanic eruption. An eruption that ejects large volumes of magma over a short period of time can cause significant detriment to the str ...
located in the eastern part of
Kamchatka Peninsula,
Russia
Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...
. 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 ( ; referred to colloquially as the ''ice age, Ice Age'') is the geological epoch (geology), epoch that lasted from to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fin ...
in several large eruptions that deposited 20–25 km
3 of
ignimbrite
Ignimbrite is a type of volcanic rock, consisting of hardened tuff. Ignimbrites form from the deposits of pyroclastic flows, which are a hot suspension of particles and gases flowing rapidly from a volcano, driven by being denser than the surrou ...
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 micro-organisms due to its high localized temperatures.(C.Michael Hogan. 2010)
See also
*
List of volcanoes in Russia
This is a list of active and extinct volcanoes in Russia.
European Russia
Kamchatka
Volcanoes of the Kamchatka Peninsula of the northwestern Pacific Ocean and the Russian Far East.
Kuril Islands
Volcanoes of the Kuril Islands, in the ...
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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