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Kozelsky Volcano

Avachinsky

Stratovolcano · Russia · 2717m

Avachinsky rises above Petropavlovsk, Kamchatka's largest city. The peak to the right is the rim of a large horseshoe-shaped crater that formed during flank collapse about 30,000-40,000 years ago and produced a major debris avalanche buried an area of about 500 km2 to the south, underlying the city of Petropavlovsk. The modern cone was constructed inside this crater. Frequent historical eruptions have been recorded since 1737.
Avachinsky rises above Petropavlovsk, Kamchatka's largest city. The peak to the right is the rim of a large horseshoe-shaped crater that formed during flank collapse about 30,000-40,000 years ago and produced a major debris avalanche buried an area of about 500 km2 to the south, underlying the city of Petropavlovsk. The modern cone was constructed inside this crater. Frequent historical eruptions have been recorded since 1737. · Photo: Photo by Oleg Volynets, 1985 (Institute of Volcanology, Petropavlovsk). · Wikimedia Commons
Type
Stratovolcano
Country
Russia
Region
Northwestern Pacific Volcanic Regions / Eastern Kamchatka Volcanic Arc
Elevation
2717m
Coordinates
53.256, 158.836
Last eruption
2001
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Andesite / Basaltic Andesite
Geological summary

Avachinsky, one of Kamchatka's most active volcanoes, rises above Petropavlovsk, Kamchatka's largest city. It began to form during the middle or late Pleistocene, and is flanked to the SE by Kozelsky volcano, which has a large crater breached to the NE. A large collapse scarp open to the SW was created when a major debris avalanche about 30,000-40,000 years ago buried an area of about 500 km2 to the south, underlying the city of Petropavlovsk. Reconstruction of the volcano took place in two stages, the first of which began about 18,000 years before present (BP), and the second 7,000 years BP. Most eruptions have been explosive, with pyroclastic flows and hot lahars being directed primarily to the SW by the collapse scarp, although there have also been relatively short lava flows. The frequent historical eruptions have been similar in style and magnitude to previous Holocene eruptions.

From Wikipedia

Avachinsky is an active stratovolcano in Russia. It is situated on the Kamchatka Peninsula in the Russian Far East. Avachinsky lies within sight of Petropavlovsk-Kamchatsky, the capital of Kamchatka Krai. Together with neighbouring Koryaksky volcano, it is considered a Decade Volcano, worthy of particular study in light of its history of explosive eruptions and proximity to populated areas.

Wikipedia · CC BY-SA · Read full article →

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
6100 BCE~5830 BCE · 2 eruptions · max VEI 55830 BCE~5560 BCE · 2 eruptions · max VEI ?5560 BCE~5290 BCE · 2 eruptions · max VEI ?4750 BCE~4480 BCE · 1 eruptions · max VEI 44480 BCE~4210 BCE · 4 eruptions · max VEI 54210 BCE~3940 BCE · 2 eruptions · max VEI ?3940 BCE~3670 BCE · 2 eruptions · max VEI 43670 BCE~3400 BCE · 2 eruptions · max VEI ?3400 BCE~3130 BCE · 1 eruptions · max VEI 53130 BCE~2860 BCE · 2 eruptions · max VEI ?2860 BCE~2590 BCE · 1 eruptions · max VEI ?2590 BCE~2320 BCE · 2 eruptions · max VEI 42320 BCE~2049 BCE · 2 eruptions · max VEI ?1779 BCE~1509 BCE · 1 eruptions · max VEI ?1509 BCE~1239 BCE · 2 eruptions · max VEI 5159 BCE~111 · 1 eruptions · max VEI ?381~651 · 1 eruptions · max VEI ?651~921 · 2 eruptions · max VEI ?921~1191 · 1 eruptions · max VEI ?1191~1461 · 2 eruptions · max VEI ?1461~1731 · 1 eruptions · max VEI ?1731~2001 · 22 eruptions · max VEI 46100 BCE4210 BCE2049 BCE159 BCE1731

Detailed timeline

  1. 2001VEI 1Observed
    2001-10-05 – 2001-10-05
  2. 1991VEI 2Observed
    1991-01-13 – 1991-01-30
  3. 1945VEI 4Observed
    1945-02-25 – 1945-02-25
  4. 1938VEI 3Observed
    1938-03-06 – 1938-12-01
  5. 1926VEI 4Observed
    1926-03-27 – 1927-03-14
  6. 1910VEI ?Geological estimate
    1910 – Ongoing
  7. 1909VEI 2Observed
    1909-08 – Ongoing
  8. 1901VEI 2Observed
    1901-07-07 – 1901-07-13
  9. 1894VEI 2Observed
    1894-10 – 1895-02
  10. 1881VEI 2Observed
    1881 – Ongoing
  11. 1878VEI 2Observed
    1878 – Ongoing
  12. 1855VEI 2Observed
    1855-05-28 – 1855-09-04
  13. 1854VEI 2Observed
    1854-08-13 – Ongoing
  14. 1853VEI 2Observed
    1853-12-21 – 1854-03-14
  15. 1851VEI 2Observed
    1851-11-26 – 1852-02-14
  16. 1837VEI ?Geological estimate
    1837 – Ongoing
  17. 1828VEI 2Observed
    1828-04-17 – Ongoing
  18. 1827VEI 4Observed
    1827-06-27 – 1827-06-29
  19. 1789VEI ?Geological estimate
    1789 – Ongoing
  20. 1779VEI 3Observed
    1779-06-15 – 1779-06-16
  21. 1772VEI 2Observed
    1772 – Ongoing
  22. 1737VEI 3Observed
    1737-08 – 1737-08
  23. 1550VEI ?Geological estimate
    1550 – Ongoing
  24. 1400VEI ?Geological estimate
    1400 – Ongoing
  25. 1200VEI ?Geological estimate
    1200 – Ongoing
  26. 1100VEI ?Geological estimate
    1100 – Ongoing
  27. 900VEI ?Geological estimate
    900 – Ongoing
  28. 700VEI ?Geological estimate
    700 – Ongoing
  29. 400VEI ?Geological estimate
    400 – Ongoing
  30. 100VEI ?Geological estimate
    100 – Ongoing
  31. 1350 BCEVEI 5Geological estimate
    BCE 1350 – Ongoing
  32. 1500 BCEVEI 5Geological estimate
    BCE 1500 – Ongoing
  33. 1700 BCEVEI ?Geological estimate
    BCE 1700 – Ongoing
  34. 2100 BCEVEI ?Geological estimate
    BCE 2100 – Ongoing
  35. 2300 BCEVEI ?Geological estimate
    BCE 2300 – Ongoing
  36. 2500 BCEVEI ?Geological estimate
    BCE 2500 – Ongoing
  37. 2530 BCE (±300 yrs)VEI 4Geological estimate
    BCE 2530 – Ongoing
  38. 2650 BCEVEI ?Geological estimate
    BCE 2650 – Ongoing
  39. 2900 BCEVEI ?Geological estimate
    BCE 2900 – Ongoing
  40. 2950 BCEVEI ?Geological estimate
    BCE 2950 – Ongoing
  41. 3200 BCE (±150 yrs)VEI 5Geological estimate
    BCE 3200 – Ongoing
  42. 3400 BCEVEI ?Geological estimate
    BCE 3400 – Ongoing
  43. 3500 BCEVEI ?Geological estimate
    BCE 3500 – Ongoing
  44. 3700 BCEVEI ?Geological estimate
    BCE 3700 – Ongoing
  45. 3790 BCE (±100 yrs)VEI 4Geological estimate
    BCE 3790 – Ongoing
  46. 4050 BCEVEI ?Geological estimate
    BCE 4050 – Ongoing
  47. 4200 BCEVEI ?Geological estimate
    BCE 4200 – Ongoing
  48. 4250 BCEVEI ?Geological estimate
    BCE 4250 – Ongoing
  49. 4340 BCE (±75 yrs)VEI 5Geological estimate
    BCE 4340 – Ongoing
  50. 4400 BCEVEI ?Geological estimate
    BCE 4400 – Ongoing
  51. 4460 BCE (±100 yrs)VEI 4Geological estimate
    BCE 4460 – Ongoing
  52. 4550 BCE (±200 yrs)VEI 4Geological estimate
    BCE 4550 – Ongoing
  53. 5450 BCEVEI ?Geological estimate
    BCE 5450 – Ongoing
  54. 5500 BCEVEI ?Geological estimate
    BCE 5500 – Ongoing
  55. 5600 BCEVEI ?Geological estimate
    BCE 5600 – Ongoing
  56. 5700 BCEVEI ?Geological estimate
    BCE 5700 – Ongoing
  57. 5980 BCE (±100 yrs)VEI 5Geological estimate
    BCE 5980 – Ongoing
  58. 6100 BCEVEI ?Geological estimate
    BCE 6100 – Ongoing

External links

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