Ichinsky
Stratovolcano in Russia
Key Facts
Elevation
3,596 m (11,798 ft)
Type
Stratovolcano
Location
55.678°, 157.718°
Region
Central Kamchatka Volcanic Arc
Rock Type
Basalt / Picro-Basalt
Tectonic Setting
Subduction zone
Location
Loading map...
Overview
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.
Volcanic Hazards & Risk Assessment
Primary Hazards
- Pyroclastic flows
- Lava flows
- Volcanic bombs and ballistics
- Lahars and mudflows
Risk Level
Geological Composition & Structure
Rock Types
Tectonic Setting
Age & Formation
Eruption Statistics & Analysis
| Metric | Value | Global Ranking | Significance |
|---|---|---|---|
| Total Recorded Eruptions | Unknown | Low | Moderately active volcano |
| Maximum VEI | VEI Unknown | Minor | Local impact potential |
| Recent Activity | 286 years ago | Historical | Historically active |
Monitoring & Alert Status
Monitoring Networks
Current Status
Nearby Volcanoes in Northwestern Pacific Volcanic Regions
Quick Info
- •Smithsonian ID: 300280
- •Evidence: Eruption Observed
- •Epoch: Holocene
About the Photo
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 by Oleg Volynets, 1977 (Institute of Volcanology, Petropavlovsk).
Authority Sources
Related Volcanoes
Basic Information
This page shows basic data from the Smithsonian Global Volcanism Program. For more detailed information, visit the official Smithsonian page.