Skip to main content
← Back to map
⇄ Compare

Alney-Chashakondzha

Stratovolcano · Russia · 2570m

Glacial valleys descend from the western side of Alney, which along with Chashakondzha, forms one of the largest volcanic complexes of the Sredinny Range. This is one of the few large stratovolcanoes in the Sredinny Range known to have been active throughout the Holocene, with more than 30 documented pyroclastic deposits. Scoria cones on the eastern flanks formed during the Holocene.
Glacial valleys descend from the western side of Alney, which along with Chashakondzha, forms one of the largest volcanic complexes of the Sredinny Range. This is one of the few large stratovolcanoes in the Sredinny Range known to have been active throughout the Holocene, with more than 30 documented pyroclastic deposits. Scoria cones on the eastern flanks formed during the Holocene. · Photo: Copyrighted photo by Adam Kirilenko, 2003. · Wikimedia Commons
Type
Stratovolcano
Country
Russia
Region
Northwestern Pacific Volcanic Regions / Central Kamchatka Volcanic Arc
Elevation
2570m
Coordinates
56.656, 159.647
Last eruption
1600
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Basalt / Picro-Basalt
Geological summary

The glacier-capped Alney-Chashakondzha complex, one of the largest volcanoes of the Sredinny Range, consists of two large mostly Pleistocene andesitic stratovolcanoes constructed on a large Pliocene shield volcano. Both Alney on the north and Chashakondzha on the south are capped with andesitic lava domes. Three rhyodacitic-to-rhyolitic lava domes and associated lava flows were emplaced along ring faults enclosing a 15 x 20 km area. Two cinder cones on the east flanks of Alney and Chashakondzha erupted about 2600 years ago and produced lava flows, one of which traveled as far as 9 km. Alney is one of the few large stratovolcanoes in the Sredinny Range known to have been active throughout the Holocene, with more than 30 documented pyroclastic deposits. The last intense eruption took place about 350 years ago.

From Wikipedia

Alney–Chashakondzha is a volcanic complex located in the northern part of Kamchatka Peninsula, Russia. It consists of two stratovolcanoes: Alney (2598 m) and Chashakondzha (2526 m). Alney is one of the few large stratovolcanoes in the Sredinny Range known to have been active throughout the Holocene, with more than 30 documented pyroclastic deposits.

Wikipedia · CC BY-SA · Read full article →

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
660 BCE~472 BCE · 2 eruptions · max VEI 31412~1600 · 1 eruptions · max VEI ?660 BCE95 BCE4708471412

Detailed timeline

  1. 1600VEI ?Geological estimate
    1600 – Ongoing
    Alney volcano
  2. 650 BCE (±75 yrs)VEI 3Geological estimate
    BCE 650 – Ongoing
    East flank of Alney (Kireunsky)
  3. 660 BCE (±75 yrs)VEI 3Geological estimate
    BCE 660 – Ongoing
    E of Chashakondzha (Levaya Belaya)

External links

⚠ For reference only. Not for emergency response.