Global Volcanism Program | Alney-Chashakondzha

The Global Volcanism Program has no activity reports available for Alney-Chashakondzha.

The Global Volcanism Program has no Weekly Reports available for Alney-Chashakondzha.

The Global Volcanism Program has no Bulletin Reports available for Alney-Chashakondzha.

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.

Cones

Feature Name

Feature Type

Elevation

Latitude

Longitude

Alney
Alnei

Stratovolcano

2570 m

56° 41' 32" N

159° 38' 43" E

Chashakondzha

Stratovolcano

2473 m

56° 36' 55" N

159° 39' 7" E

Kireunsky

Pyroclastic cone

1330 m

56° 41' 31" N

159° 44' 9" E

Levaia Belaia River

Lava cone

1012 m

56° 38' 27" N

159° 43' 12" E

Basic Data

Volcano Number

Last Known Eruption

Elevation

Latitude
Longitude

300450

1600 CE

2,570 m / 8,432 ft

56.656°N
159.647°E

Morphology

Volcano Landform
Composite

Volcano Types
Stratovolcano
Caldera
Lava dome(s)

Rock Types

Major
Basalt / Picro-Basalt
Andesite / Basaltic Andesite

Minor
Rhyolite
Dacite

Tectonic Setting

Subduction zone
Continental crust (> 25 km)

Population

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

0
0
3
10,679

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.

This volcano is located within the Volcanoes of Kamchatka, a UNESCO World Heritage property.

References

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 Geological Survey Open-File Report, 86-291: 1-300. https://doi.org/10.3133/ofr86291

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

Kozhemyaka N N, 1996. Long-lived volcanic centers of Kamchatka: types of cones, growth time spans, volumes of erupted material, productivities, rock proportions, and tectonic settings. Volc Seism, 17: 621-636 (English translation).

Ogorodov N V, Kozhemyaka N N, Vazheevskaya A A, Ogorodov A S, 1972. Volcanoes and the Quaternary Volcanism of the Sredinny Ridge in Kamchatka. Moscow: Nauka Pub, 190 p (in Russian).

Pevzner M M, 2004. New data on Holocene monogenetic volcanism of the northern Kamchatka: ages and space distribution. IV Internatl Biennial Workshop on Subduction Processes, Petropavlovsk-Kamchatsky, August 21-27, 2004, Abs.

Pevzner M M, 2006. Holocene volcanism of Northern Kamchtaka: the spatiotemporal aspect. Trans (Doklady) USSR Acad Sci Earth Sci, 409: 648-651. https://doi.org/10.1134/S1028334X06060109

Ponomareva V, Melekestsev I, Braitseva O, Churikova T, Pevzner M, Sulerzhitsky L, 2007. Late Pleistocene-Holocene volcanism on the Kamchatka Peninsula, northwest Pacific region. In: Eichelberger J, Gordeev E, Izbekov P, Kasahara M, Lees J (eds), Volcanism and Subduction: the Kamchatka Region, Amer Geophysical Union, Geophysical Monograph Series, 172: 165-198. https://doi.org/10.1029/GM172

Vlasov G M, 1967. Kamchatka, Kuril, and Komandorskiye Islands: geological description. In: Geol of the USSR, Moscow, 31: 1-827.

Eruptive History

There is data available for 3 confirmed Holocene eruptive periods.

1600 (?) Confirmed Eruption

Episode 1 | Eruption

Alney volcano

1600 (?) - Unknown

Evidence from Isotopic: 14C (uncalibrated)

List of 1 Events for Episode 1 at Alney volcano

	Start Date	End Date	Event Type	Event Remarks
	- - - -	- - - -	Explosion

0650 BCE ± 75 years Confirmed Eruption VEI: 3

Episode 1 | Eruption

East flank of Alney (Kireunsky)

0650 BCE ± 75 years - Unknown

Evidence from Isotopic: 14C (uncalibrated)

List of 4 Events for Episode 1 at East flank of Alney (Kireunsky)

Start Date	End Date	Event Type
- - - -	- - - -	Explosion
- - - -	- - - -	Lava flow
- - - -	- - - -	Scoria
0650 BCE ± 75 years	- - - -	VEI (Explosivity Index)

0660 BCE ± 75 years Confirmed Eruption VEI: 3

Episode 1 | Eruption

E of Chashakondzha (Levaya Belaya)

0660 BCE ± 75 years - Unknown

Evidence from Isotopic: 14C (uncalibrated)

List of 5 Events for Episode 1 at E of Chashakondzha (Levaya Belaya)

Start Date	End Date	Event Type
- - - -	- - - -	Explosion
- - - -	- - - -	Lava flow
- - - -	- - - -	Cinder Cone
- - - -	- - - -	Tephra
0660 BCE ± 75 years	- - - -	VEI (Explosivity Index)

Deformation History

There is no Deformation History data available for Alney-Chashakondzha.

Emission History

There is no Emissions History data available for Alney-Chashakondzha.

Photo Gallery

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.

Copyrighted photo by Adam Kirilenko, 2003.

The Kireunsky lava flow erupted from a vent on the eastern side of the Alney-Chashakondzha volcanic massif (background) about 2,600 years ago. The vent is located in the divide between the Kirevna (far right) and Pravaya Kirevna (left foreground) rivers.

Copyrighted photo by Adam Kirilenko, 2002.

The Levaya Belaya lava flow erupted from a cone 5 km ENE of the summit of Chashakondzha. Compressional ridges are visible in the middle of the photo, and the Levaya Belaya River has cut a channel along the northern flow margin. The lava was radiocarbon dated to about 2,610 years ago.

Copyrighted photo by Adam Kirilenko, 2002.

GVP Map Holdings

Maps are not currently available due to technical issues.

Smithsonian Sample Collections Database

There are no samples for Alney-Chashakondzha in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

External Sites

Copernicus Browser

The Copernicus Browser replaced the Sentinel Hub Playground browser in 2023, to provide access to Earth observation archives from the Copernicus Data Space Ecosystem, the main distribution platform for data from the EU Copernicus missions.

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.

MODVOLC Thermal Alerts

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.

WOVOdat
   Single Volcano View
   Temporal Evolution of Unrest
   Side by Side Volcanoes

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.

GVMID Data on Volcano Monitoring Infrastructure The Global Volcano Monitoring Infrastructure Database GVMID, is aimed at documenting and improving capabilities of volcano monitoring from the ground and space. GVMID should provide a snapshot and baseline view of the techniques and instrumentation that are in place at various volcanoes, which can be use by volcano observatories as reference to setup new monitoring system or improving networks at a specific volcano. These data will allow identification of what monitoring gaps exist, which can be then targeted by remote sensing infrastructure and future instrument deployments.

Volcanic Hazard Maps

The IAVCEI Commission on Volcanic Hazards and Risk has a Volcanic Hazard Maps database designed to serve as a resource for hazard mappers (or other interested parties) to explore how common issues in hazard map development have been addressed at different volcanoes, in different countries, for different hazards, and for different intended audiences. In addition to the comprehensive, searchable Volcanic Hazard Maps Database, this website contains information about diversity of volcanic hazard maps, illustrated using examples from the database. This site is for educational purposes related to volcanic hazard maps. Hazard maps found on this website should not be used for emergency purposes. For the most recent, official hazard map for a particular volcano, please seek out the proper institutional authorities on the matter.

IRIS seismic stations/networks

Incorporated Research Institutions for Seismology (IRIS) Data Services map showing the location of seismic stations from all available networks (permanent or temporary) within a radius of 0.18° (about 20 km at mid-latitudes) from the given location of Alney-Chashakondzha. Users can customize a variety of filters and options in the left panel. Note that if there are no stations are known the map will default to show the entire world with a "No data matched request" error notice.

UNAVCO GPS/GNSS stations

Geodetic Data Services map from UNAVCO showing the location of GPS/GNSS stations from all available networks (permanent or temporary) within a radius of 20 km from the given location of Alney-Chashakondzha. Users can customize the data search based on station or network names, location, and time window. Requires Adobe Flash Player.

DECADE Data

The DECADE portal, still in the developmental stage, serves as an example of the proposed interoperability between The Smithsonian Institution's Global Volcanism Program, the Mapping Gas Emissions (MaGa) Database, and the EarthChem Geochemical Portal. The Deep Earth Carbon Degassing (DECADE) initiative seeks to use new and established technologies to determine accurate global fluxes of volcanic CO₂ to the atmosphere, but installing CO₂ monitoring networks on 20 of the world's 150 most actively degassing volcanoes. The group uses related laboratory-based studies (direct gas sampling and analysis, melt inclusions) to provide new data for direct degassing of deep earth carbon to the atmosphere.

Large Eruptions of Alney-Chashakondzha

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).

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).