Photo of this volcano
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 39.958°N
  • 140.854°E

  • 1613 m
    5291 ft

  • 283250
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Hachimantai.

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

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

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.

Eruptive History

There is data available for 2 Holocene eruptive periods.

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
5350 BCE (?) Unknown Confirmed   Tephrochronology
7900 BCE ± 150 years Unknown Confirmed   Radiocarbon (corrected)

Deformation History

There is no Deformation History data available for Hachimantai.

Emission History

There is no Emissions History data available for Hachimantai.

Photo Gallery

A series of explosion craters, some filled by lakes, dot the undulating summit plateau of Hachimantai volcano. Hachimantai was constructed from widely scattered vents during the Pleistocene and is capped with andesitic lavas from vents in the center of the complex. Circular craters are located near Komono-more and Mokko-dake in the center of the plateau. No historical eruptions have been recorded at Hachimantai, but active solfataras are found on the western and southern flanks of the massif.

Photo by Ichio Moriya (Kanazawa University).
See title for photo information.

Smithsonian Sample Collections Database

The following 2 samples associated with this volcano can be found in the Smithsonian's NMNH Department of Mineral Sciences collections, and may be availble for research (contact the Rock and Ore Collections Manager). Catalog number links will open a window with more information.

Catalog Number Sample Description Lava Source Collection Date
NMNH 113862 Andesite -- --
NMNH 113863 Hypersthene Andesite -- --

Affiliated Sites