Jom-Bolok

Photo of this volcano
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 52.713°N
  • 99.021°E

  • 2047 m
    6714 ft

  • 302060
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Jom-Bolok.

The Global Volcanism Program has no Weekly Reports available for Jom-Bolok.

The Global Volcanism Program has no Bulletin Reports available for Jom-Bolok.

Eruptive History


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


Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
5180 BCE ± 140 years Unknown Confirmed   Radiocarbon (corrected) Jom-Bolok (Atkinson cone)

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.

Photo Gallery


The rugged surface of the Jom-Bolok (Zhom-Bolok) lava flow fills the valley of the Oka River. The massive Holocene lava flow traveled 70 km from its source, a cinder cone of the Jom-Bolok volcanic field near the Oka Plateau west of Lake Baikal.

Photo by Jim Luhr, 1991 (Smithsonian Institution).
See title for photo information.
A group of small basaltic cinder cones were erupted from the Jom-Bolok volcanic field near the Oka Plateau, about 200 km WNW of the SW tip of Lake Baikal. Two of the cinder cones are seen here from the SE. The eroded cone at the lower right is Stariy. The young cone (left center) is Peretolchin volcano, named after a geologist who disappeared in the early 20th century, prior to the Russian revolution. Peretolchin cone was the source of the voluminous 70-km-long Jon-Bolok (Zhom-Bolok) lava flow, one of the world's longest Holocene lava flows.

Photo by Sergei Rasskazov, 1995 (Siberian Branch, USSR Academy of Sciences).
See title for photo information.
The massive Jom-Bolok (Zhom-Bolok) lava flow, which traveled about 70 km down the Oka River, is seen here near its terminous, where it is 1.5 km wide. An earlier lava flow that was dated at 12,000 +/- 4000 years by thermoluminescence was erosionally dissected, after which the Holocene Jom-Bolok flow traveled down a gorge cut in the older flow.

Photo by Sergei Rasskazov, 1995 (Siberian Branch, USSR Academy of Sciences).
See title for photo information.

Smithsonian Sample Collections Database


The following 14 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 117639-109 Basalt
NMNH 117639-110 Basalt
NMNH 117639-111 Basalt
NMNH 117639-222 Basalt
NMNH 117639-223 Basalt
NMNH 117639-224 Basalt
NMNH 117639-225 Basalt
NMNH 117639-226 Basalt
NMNH 117639-227 Basalt
NMNH 117639-228 Basalt
NMNH 117639-229 Basalt
NMNH 117639-230 Basalt
NMNH 117639-231 Basalt
NMNH 117639-232 Basalt

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