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Krenitsyn Volcano

Tao-Rusyr Caldera

Stratovolcano · Russia · 1272m

Krenitzyn Peak is a post-caldera cone that forms a 4-km island rising above the rim of 7.5-km-wide Tao-Rusyr caldera. It has a 350 m summit crater and a large shallow crater (left center) on the upper NE flank. The small dark mass along the eastern shoreline (right-center) is a lava dome that was emplaced in 1952. Kal'tsevoe lake fills a caldera that formed about 7,500 years ago during one of the largest Holocene eruptions in the Kuril Islands.
Krenitzyn Peak is a post-caldera cone that forms a 4-km island rising above the rim of 7.5-km-wide Tao-Rusyr caldera. It has a 350 m summit crater and a large shallow crater (left center) on the upper NE flank. The small dark mass along the eastern shoreline (right-center) is a lava dome that was emplaced in 1952. Kal'tsevoe lake fills a caldera that formed about 7,500 years ago during one of the largest Holocene eruptions in the Kuril Islands. · Photo: Photo by Oleg Volynets (Institute of Volcanology, Petropavlovsk). · Wikimedia Commons
Type
Stratovolcano
Country
Russia
Region
Northwestern Pacific Volcanic Regions / Kuril Volcanic Arc
Elevation
1272m
Coordinates
49.340, 154.725
Last eruption
1952
Tectonic setting
Subduction zone / Intermediate crust (15-25 km)
Landform
Composite
Major rock type
Andesite / Basaltic Andesite
Geological summary

The southern half of Onekotan Island in the northern Kuril Islands contains the 7.5-km-wide Tao-Rusyr caldera, which is mostly filled by Kal'tsevoe lake. The basaltic-to-andesitic caldera formed about 7,500 years ago, in which the large post-caldera Krenitsyn Peak grew, building a 4-km-wide island in the NW part of the lake that rises above the caldera rim. A 350-m-wide, 100-m-deep crater truncates the peak, and a large crater is located on the upper NE side. An eruption in 1952 formed a small lava dome in an explosion crater along the eastern shore of the island.

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
5550 BCE~5300 BCE · 1 eruptions · max VEI 61702~1952 · 1 eruptions · max VEI 35550 BCE3800 BCE1799 BCE49 BCE1702

Detailed timeline

  1. 1952VEI 3Observed
    1952-11-12 – 1952-11-19
    Krenitsyn Peak (east flank)
  2. 5550 BCE (±75 yrs)VEI 6Geological estimate
    BCE 5550 – Ongoing
    Tao-Rusyr

External links

⚠ For reference only. Not for emergency response.