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  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 54.5°N
  • 159.97°E

  • 1617 m
    5304 ft

  • 300170
  • Latitude
  • Longitude

  • Summit

  • Volcano

There are no activity reports for Uzon.

 Available Weekly Reports

There are no Weekly Reports available for Uzon.

Summary of eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
0200 ± 300 years Unknown Confirmed   Tephrochronology Khloridnoe Lake
1550 BCE (?) Unknown Confirmed   Tephrochronology Bannoe Lake
5700 BCE ± 50 years Unknown Confirmed   Radiocarbon (uncorrected) N part of caldera (Lake Dal'ny maar)
5750 BCE (?) Unknown Confirmed   Tephrochronology

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Belousov V I, Grib E N, Leonov V L, 1983. The geological setting of the hydrothermal systems in the geysers valley of Uzon caldera. Volc Seism, 1983(1): 65-79 (English translation 1984, 5: 67-82).

Egorova I A, 1993. Age and paleogeography of the formation of volcano-sedimentary deposits in the Uzon-Geizernaya caldera depression, Kamchatka (according to palynological data). Volc Seism, 15: 157-176.

Fedotov S A, Masurenkov Y P (eds), 1991. Active Volcanoes of Kamchatka. Moscow: Nauka Pub, 2 volumes.

Florenskii I V, 1984. On the age of Uzon and Krasheninnikov calderas. Volc Seism, 1984(1): 102-106 (English translation 1988, 6: 147-154).

Grib V N, Leonov V L, 1994. Ignimbrites of the Uzon-Geizernaya volcano-tectonic depression, Kamchatka: geologic sequences, compositions, and formation conditions. Volc Seism, 15: 527-548 (English translation).

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..

Leonov V L, Grib E N, 1999. Calderas and ignimbrites in the Uzon-Semyachik area of Kamchatka: new data from field work on the Shirokoe Plateau. Volc Seism, 20: 299-320 (English translation).

Luchitsky I V (ed), 1974. History of the Development of Relief of Siberia and the Far East. Kamchatka, Kurile and Komander Islands. Moscow: Nauka Pub, 439 p (in Russian).

Newhall C G, Dzurisin D, 1988. Historical unrest at large calderas of the world. U S Geol Surv Bull, 1855: 1108 p, 2 vol.

Vlasov G M, 1967. Kamchatka, Kuril, and Komandorskiye Islands: geological description. In: {Geol of the USSR}, Moscow, 31: 1-827.

Vlodavetz V I, Piip B I, 1959. Kamchatka and Continental Areas of Asia. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 8: 1-110.

Zolotarev B P, Karpov G A, Eroshchev-Shak V A, Artamonov A V, Grigoriev V S, Pokrovsky B G, 1999. Evolution of volcanism in the Uzon caldera, Kamchatka. Volc Seism, 20: 675-694 (English translation).

The twin Uzon and Geysernaya calderas, containing Kamchatka's largest geothermal area, form a 7 x 18 km depression that originated during multiple eruptions during the mid-Pleistocene. Widespread ignimbrite deposits associated with caldera formation have a volume of 20-25 cu km (exclusive of airfall deposits) and cover an area of 1700 sq km. Post-caldera activity was largely Pleistocene in age and consisted of the extrusion of small silicic lava domes and flows and maar formation in the Geysernaya caldera. The Lake Dal'ny maar in the NE part of the 9 x 12 km western caldera, Uzon, is early Holocene in age, and several Holocene phreatic eruptions have been documented in the Geysernaya caldera. The extensive high-temperature hydrothermal system includes the many hot springs, mudpots, and geysers of the Valley of Geysers, a 4-km-long canyon on the SE margin of the Uzon-Geysernaya depression. Hydrothermal explosions took place in the caldera in 1986 and 1989.