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Zavaritski Caldera
Highest point
Elevation	624 m (2,047 ft)
Coordinates	46°55′N 151°57′E / 46.917°N 151.950°E / 46.917; 151.950
Geography
Zavaritski CalderaZavaritski Caldera in Russian Far East
Location	Simushir, Kuril Islands, Russia
Geology
Mountain type	Caldera
Last eruption	November to December 1957

Zavaritski Caldera (Russian: Вулкан Заварицкого, Vulkan Zavaritskogo), also spelled "Zavaritskii" and "Zavaritsky", is a caldera located in the central part of Simushir Island, Kuril Islands, Russia. Lake Biryuzovoe partially fills the youngest of three nested calderas on the volcano. The volcano is named after Alexander Nikolayevich Zavaritski, a scientist of the Academy of Sciences of the Soviet Union.

In May 2023, a team led by volcanologist William Hutchison found that ice cores from Greenland and elsewhere provided geochemical clues pinpointing the Zavaritski island volcano responsible for a climate-altering eruption in 1831. The aerosol haze from this caused the sun to appear blue and the loss of radiance caused widespread crop failures and famines.

See also

• List of volcanoes in Russia
• Tectonic–climatic interaction

References

1. Stone, Richard (30 December 2024), "Ice cores finger obscure Pacific volcano as cause of 19th century climate disaster", Science

• "Zavaritzki Caldera". Global Volcanism Program. Smithsonian Institution.
• Aerial image retrieve from NASA Technical Reports Server on 19 April 2007.

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• Simushir
• Active volcanoes
• Volcanic crater lakes
• Calderas of Russia
• Volcanoes of the Kuril Islands
• Pleistocene calderas
• Holocene calderas
• Sakhalin Oblast geography stubs