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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 55.678°N
  • 157.718°E

  • 3596 m
    11795 ft

  • 300280
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Ichinsky.

The Global Volcanism Program has no Weekly Reports available for Ichinsky.

The Global Volcanism Program has no Bulletin Reports available for Ichinsky.

Basic Data

Volcano Number

Last Known Eruption



1740 CE

3596 m / 11795 ft


Volcano Types

Lava dome(s)
Pyroclastic cone(s)

Rock Types

Basalt / Picro-Basalt
Andesite / Basaltic Andesite

Tectonic Setting

Subduction zone
Continental crust (> 25 km)


Within 5 km
Within 10 km
Within 30 km
Within 100 km

Geological Summary

Ichinsky, by far the highest peak in the Sredinny Range, is a massive, 450 cu km stratovolcano that is one of Kamchatka's largest. The andesitic Pleistocene-to-Holocene stratovolcano, also known as Icha volcano, 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 of 3596-m-high Ichinsky. A dozen late-Pleistocene to Holocene dacitic and rhyodacitic lava domes circle the peak below the caldera rim, at elevations of 1800-3000 m. 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 northern flank. In 1956 steam jets rose 250 m above the caldera fumarole field.


The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography.

Erlich E N, 1986. Geology of the calderas of Kamchatka and Kurile Islands with comparison to calderas of Japan and the Aleutians, Alaska. U S Geol Surv Open-File Rpt, 86-291: 1-300.

Fedotov S A, Masurenkov Y P (eds), 1991. Active Volcanoes of Kamchatka. Moscow: Nauka Pub, 2 volumes.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..

Kozhemyaka N N, 1995. Active volcanoes of Kamchatka: types and growth time of cones, total volumes of erupted material, productivity, and composition of rocks. Volc Seism, 16: 581-594 (English translation).

Pevzner M M, 2004a. The first geolgical data on the chronology of Holocene eruptive activity in the Ichinskii volcano (Sredinnyi Ridge, Kamchatka). Trans (Doklady) USSR Acad Sci Earth Sci, 395: 507-510.

Vlodavetz V I, Piip B I, 1959. Kamchatka and Continental Areas of Asia. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 8: 1-110.

Eruptive History

Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1740 Unknown Confirmed 0 Historical Observations SSW flank
1300 ± 200 years Unknown Confirmed   Radiocarbon (corrected)
0800 ± 300 years Unknown Confirmed   Radiocarbon (corrected)
0550 (?) Unknown Confirmed   Tephrochronology
0050 ± 300 years Unknown Confirmed   Radiocarbon (corrected)
0600 BCE (?) Unknown Confirmed   Tephrochronology
1200 BCE (?) Unknown Confirmed   Tephrochronology
1950 BCE ± 300 years Unknown Confirmed   Radiocarbon (corrected)
2850 BCE ± 300 years Unknown Confirmed   Radiocarbon (corrected)
5400 BCE (?) Unknown Confirmed 5 Tephrochronology SW flank
5650 BCE (?) Unknown Confirmed   Tephrochronology
5850 BCE (?) Unknown Confirmed   Tephrochronology
6150 BCE ± 50 years Unknown Confirmed   Radiocarbon (corrected)
6950 BCE (?) Unknown Confirmed   Tephrochronology

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.


Icha | Alnei | Hoashen | Belaia Sopka | Sopochnaia | Alianngei | Akhlan | Kaolkhon | Kotkhlonga | Uachlar | Fleallin | Hweiain | Hfealin | Itschinskij | Sopotschnaja | Aljanngej | Achlan | Kolchon | Chfealin | Cweajain | Khoashen | Choaschen | Kotchlonga | Uakhlar

Photo Gallery

Ichinsky is the highest peak in Kamchatka's Sredinny Range, which extends along the western side of the peninsula. The 3621-m-high 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 1800-3000 m. Fumarolic activity occurs within the caldera and on the lower northern flank.

Photo by Oleg Volynets, 1977 (Institute of Volcanology, Petropavlovsk).
The setting sun gilds the SW flank of Ichinsky, the most prominent volcano of the Sredinny Range. Two glacier-covered lava domes form the summit of the volcano. The massive stratovolcano is one of the largest volume volcanoes in Kamchatka. No historical eruptions are known from Ichinsky, but Holocene eruptions have produced dactic-to-rhyodacitic lava domes and voluminous basaltic-to-andesitic lava flows from flank vents.

Photo by Oleg Volynets, 1977 (Institute of Volcanology, Petropavlovsk).

Smithsonian Sample Collections Database

The following 1 samples associated with this volcano can be found in the Smithsonian's NMNH Department of Mineral Sciences collections. Catalog number links will open a window with more information.

Catalog Number Sample Description
NMNH 116556-11 Obsidian

Affiliated Sites

Large Eruptions of Ichinsky Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).
MODVOLC - HIGP MODIS Thermal Alert System Using infrared satellite Moderate Resolution Imaging Spectroradiometer (MODIS) data, scientists at the Hawai'i Institute of Geophysics and Planetology, University of Hawai'i, developed an automated system called MODVOLC to map thermal hot-spots in near real time. For each MODIS image, the algorithm automatically scans each 1 km pixel within it to check for high-temperature hot-spots. When one is found the date, time, location, and intensity are recorded. MODIS looks at every square km of the Earth every 48 hours, once during the day and once during the night, and the presence of two MODIS sensors in space allows at least four hot-spot observations every two days. Each day updated global maps are compiled to display the locations of all hot spots detected in the previous 24 hours. There is a drop-down list with volcano names which allow users to 'zoom-in' and examine the distribution of hot-spots at a variety of spatial scales.
MIROVA Middle InfraRed Observation of Volcanic Activity (MIROVA) is a near real time volcanic hot-spot detection system based on the analysis of MODIS (Moderate Resolution Imaging Spectroradiometer) data. In particular, MIROVA uses the Middle InfraRed Radiation (MIR), measured over target volcanoes, in order to detect, locate and measure the heat radiation sourced from volcanic activity.