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Ichinsky

Stratovolcano · Russia · 3596m

Ichinsky is the highest peak in Kamchatka's Sredinny Range, which extends along the western side of the peninsula. The summit cone of the massive stratovolcano, seen here from the south, was constructed within a 3 x 5 km-wide glacier-covered caldera. A dozen late-Pleistocene to Holocene dacitic and rhyodacitic lava domes circle the peak below the caldera rim, at elevations of 1,800-3,000 m. Fumarolic activity occurs within the caldera and on the lower N flank.
Ichinsky is the highest peak in Kamchatka's Sredinny Range, which extends along the western side of the peninsula. The summit cone of the massive stratovolcano, seen here from the south, was constructed within a 3 x 5 km-wide glacier-covered caldera. A dozen late-Pleistocene to Holocene dacitic and rhyodacitic lava domes circle the peak below the caldera rim, at elevations of 1,800-3,000 m. Fumarolic activity occurs within the caldera and on the lower N flank. · Photo: Photo by Oleg Volynets, 1977 (Institute of Volcanology, Petropavlovsk). · Wikimedia Commons
Type
Stratovolcano
Country
Russia
Region
Northwestern Pacific Volcanic Regions / Central Kamchatka Volcanic Arc
Elevation
3596m
Coordinates
55.678, 157.718
Last eruption
1740
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Basalt / Picro-Basalt
Geological summary

Ichinsky, by far the highest peak in the Sredinny Range, is a massive, 450 km3 edifice. The andesitic Pleistocene-to-Holocene stratovolcano, also known as Icha, contains a 3 x 5 km-wide glacier-covered summit caldera filled by a large post-caldera edifice. Two glacier-capped lava domes form the highest peaks. A dozen late-Pleistocene to Holocene dacitic and rhyodacitic lava domes circle the peak below the caldera rim. Fresh-looking basaltic-to-dacitic lava flows, some with prominent flow ridges, were erupted from flank vents and traveled up to 10-15 km. The largest Holocene eruption took place about 6500 years ago, producing block-and-ash flows that traveled up to 15 km. Fumarolic activity occurs within the caldera and on the lower N flank. In 1956 steam jets rose 250 m above the caldera fumarole field.

From Wikipedia

Ichinsky is a large stratovolcano located in the central part of the Kamchatka Peninsula, Russia. At 3,607 metres (11,834 ft), it is the highest peak of the Sredinny Range, the central range of the peninsula. Ichinsky is also among the largest volcanoes in Kamchatka, with a volume of about 450 cubic kilometres (110 cu mi).

Wikipedia · CC BY-SA · Read full article →

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
6950 BCE~6660 BCE · 1 eruptions · max VEI ?6371 BCE~6081 BCE · 1 eruptions · max VEI ?6081 BCE~5791 BCE · 1 eruptions · max VEI ?5791 BCE~5502 BCE · 1 eruptions · max VEI ?5502 BCE~5212 BCE · 1 eruptions · max VEI 52895 BCE~2605 BCE · 1 eruptions · max VEI ?2026 BCE~1736 BCE · 1 eruptions · max VEI ?1446 BCE~1157 BCE · 1 eruptions · max VEI ?867 BCE~577 BCE · 1 eruptions · max VEI ?2~292 · 1 eruptions · max VEI ?292~581 · 1 eruptions · max VEI ?581~871 · 1 eruptions · max VEI ?1161~1450 · 1 eruptions · max VEI ?1450~1740 · 1 eruptions · max VEI 06950 BCE4922 BCE2605 BCE577 BCE1450

Detailed timeline

  1. 1740VEI 0Observed
    1740 – Ongoing
    SSW flank
  2. 1300 (±200 yrs)VEI ?Geological estimate
    1300 – Ongoing
  3. 800 (±300 yrs)VEI ?Geological estimate
    800 – Ongoing
  4. 550VEI ?Geological estimate
    550 – Ongoing
  5. 50 (±300 yrs)VEI ?Geological estimate
    50 – Ongoing
  6. 600 BCEVEI ?Geological estimate
    BCE 600 – Ongoing
  7. 1200 BCEVEI ?Geological estimate
    BCE 1200 – Ongoing
  8. 1950 BCE (±300 yrs)VEI ?Geological estimate
    BCE 1950 – Ongoing
  9. 2850 BCE (±300 yrs)VEI ?Geological estimate
    BCE 2850 – Ongoing
  10. 5400 BCEVEI 5Geological estimate
    BCE 5400 – Ongoing
    SW flank
  11. 5650 BCEVEI ?Geological estimate
    BCE 5650 – Ongoing
  12. 5850 BCEVEI ?Geological estimate
    BCE 5850 – Ongoing
  13. 6150 BCE (±50 yrs)VEI ?Geological estimate
    BCE 6150 – Ongoing
  14. 6950 BCEVEI ?Geological estimate
    BCE 6950 – Ongoing

External links

⚠ For reference only. Not for emergency response.