Azas Plateau

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 52.52°N
  • 98.6°E

  • 2765 m
    9069 ft

  • 302070
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Azas Plateau.

The Global Volcanism Program has no Weekly Reports available for Azas Plateau.

The Global Volcanism Program has no Bulletin Reports available for Azas Plateau.

The Azas Plateau is a large volcanic field located west of the SW tip of Lake Baikal and north of the Mongolian border. The gently sloping plateau, also known as the East Tuva Plateau, the Northeast Tuva Plateau, or the Khamsara-Biykhem Plateau, covers an area of about 2000 sq km. Its glacially dissected surface is cut by broad valleys and contains several table-like mountains composed of hyaloclastites and lava flows and dotted with small scoria cones. The 2765-m-high Shivit-Tayga stratovolcano is one of the most prominent features of the Azas Plateau and is capped by two craters that once contained lava lakes. Derbi-Tayga is a 2605-m-high glacially eroded shield volcano. The surface of the Ulug-Arginsky cinder cone, initially considered to be Holocene in age, is dotted with large granitic erratics and was considered by Hasenaka et al. (1999) to be of late-Pleistocene age. Some valley filling basaltic flows in the Azas Plateau are not glacially eroded and have a Holocene morphology. Well-preserved lava flows near the Bii-Hem River may be of Holocene age.

The Global Volcanism Program is not aware of any Holocene eruptions from Azas Plateau. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Azas Plateau page in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

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.



Synonyms
Upper Bol'shoy Yenisey | East Tuva Plateau | Northeast Tuva Plateau | Khamsara-Bol'shoi Yenisei | Upper Biykhem Plateau | Khamsara-Biykhem Plateau | Upper Bol'shoi Enisey


Cones
Feature Name Feature Type Elevation Latitude Longitude
Albine-Boldok Cone
Charash-Dag Shield volcano
Derbi-Tayga
    Derbi-Taiga
Shield volcano 2605 m 52° 12' 0" N 98° 0' 0" E
Kadyr-Sugskii Shield volcano
Kadyr-Tayga Shield volcano
Kok-Hem Shield volcano
Kok-Hemskii [Kok-Hem} Shield volcano
Ploskaya
    Ploskii
Shield volcano
Priozernaya
    Priozernyi
Shield volcano
Sagan Cone
Shivit-Tayga Stratovolcano 2765 m
Soi-Tayga Cone 2765 m
Sorug Chushku-Uzu Shield volcano 2516 m
Ulug-Arga Cone
Ulug-Arginsky
    Ulag-Arginsky
    Ulag-Arginskii
Cinder cone 52° 20' 0" N 98° 0' 0" E
Ulug-Art-Tayga Cone
Yurdawa Shield volcano
The Ulug-Arginsky cinder cone, seen here from the north in the sunlight at left-center, is part of the Azas Plateau volcanic field west of the SW tip of Lake Baikal. The cone is dotted with large granitic erratics, and lava flows from the cone are glacially eroded and overlain by moraines. The Azas Plateau volcanic field, also known as the East Tuva volcanic field, covers an area of about 1500 sq km. Some basaltic lava flows in broad glacially carved valleys are unglaciated and of probable Holocene age.

Photo by Sergei Arzhannikov, 1997 (Siberian Branch, USSR Academy of Sciences).
Reddish, oxidized ejecta blankets the surface of the Ulug-Arginsky cinder cone, located about 200 km WNW of the SW tip of Lake Baikal.

Photo by Sergei Arzhannikov, 1997 (Siberian Branch, USSR Academy of Sciences).

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.

Hasenaka T, Litasov Y, Taniguchi H, Miyamoto T, Fujimaki H, 1999. Cenozoic volcanism in Siberia: a review. Center for Northeast Asian Studies, Tohoku Univ, no 3, p 249-272.

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

Litasov Y, Hasenaka T, Litasov K, Yarmolyuk V, Sugorakova A, Lebedev V, Sasaki M, Taniguchi H, 2001. Petrologic characteristics of Cenozoic alkaline basalts from the Azas Plateau, Northeast Tuva (Russia). Center for Northeast Asian Studies, Tohoku Univ, no 3, p 201-226.

Whitford-Stark J L, 1987. A survey of Cenozoic volcanism on mainland Asia. Geol Soc Amer Spec Pap, 213: 1-74.

Volcano Types

Volcanic field

Tectonic Setting

Rift zone
Continental crust (> 25 km)

Rock Types

Major
Trachybasalt / Tephrite Basanite
Phono-tephrite / Tephri-phonolite
Minor
Basalt / Picro-Basalt

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
142
142
142
4,532

Affiliated Databases

Large Eruptions of Azas Plateau 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).
Smithsonian Collections Search the Smithsonian's NMNH Department of Mineral Sciences collections database. Go to the "Search Rocks and Ores" tab and use the Volcano Name drop-down to find samples.