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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 38.599°N
  • 140.162°E

  • 552 m
    1811 ft

  • 283191
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Hijiori.

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

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

Basic Data

Volcano Number

Last Known Eruption



Unknown - Evidence Credible

552 m / 1811 ft


Volcano Types

Lava dome

Rock Types


Tectonic Setting

Subduction zone
Continental crust (> 25 km)


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

Geological Summary

Hijiori caldera is a small, inconspicuous caldera located NE of the massive Pleistocene Gassan volcano. The low 2.5-km-wide caldera formed during a large eruption about 10,300 radiocarbon years ago. This eruption was accompanied by dacitic pyroclastic flows and tephra fall that extended to the east and reached the Pacific coast and growth of a lava dome. Small local tephra deposits overlie lacustrine deposits. Hot springs occur at Hijiori, and caldera lake deposits have undergone extensive hydrothermal alteration. Hijiori has been evaluated as a potential geothermal energy source using hot dry rock as a heat source.


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

Hayakawa Y, 1994. A catalog of the volcanic eruptions during the last 2000 years in Japan. Sci Rpt Fac Education Gumma Univ, (in Japanese with English abs).

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

Japan Association Quaternary Research, 1987. Quaternary Maps of Japan: Landforms, Geology, and Tectonics. Tokyo: Univ Tokyo Press.

Japan Meteorological Agency, 2013. National Catalogue of the Active Volcanoes in Japan (fourth edition, English version). Japan Meteorological Agency.

Machida H, 1976. Stratigraphy and chronology of late Quaternary marker-tephras in Japan. Tokyo Metropolitan Univ Geog Rpt, 11: 109-132.

Machida H, Arai F, 1992. Atlas of tephra in and around Japan. Tokyo: Univ Tokyo Press, 276 p.

Miyagi I, 2004. On the eruption age of the Hijiori caldera, based on more accurate and reliable radiocarbon data. Bull Volc Soc Japan (Kazan), 49: 201-205.

Miyagi I, 2007. Stratigraphy and volcanic activities of Hijiori volcano, northeastern Japan arc. Bull Volc Soc Japan (Kazan), 52: 311-333 (in Japanese with English abs).

Nakano S, Yamamoto T, Iwaya T, Itoh J, Takada A, 2001-. Quaternary Volcanoes of Japan. Geol Surv Japan, AIST, http://www.aist.go.jp/RIODB/strata/VOL_JP/.

The Global Volcanism Program is not aware of any Holocene eruptions from Hijiori. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Hijiori 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.



Photo Gallery

Hijiori volcano, seen here in an aerial view from the east, is a small, inconspicuous caldera located NE of the massive Pleistocene Gassan volcano. The town of Hijiori lies in the left foreground, along the banks of two rivers that transect the caldera floor. The low 2.5-km-wide caldera formed during a large eruption between about 9500 and 11,000 years Before Present accompanied by pyroclastic flows and tephra fall that extended to the east and reached the Pacific coast.

Copyrighted photo by Hiroshi Yagi (Japanese Quaternary Volcanoes database, RIODB, http://riodb02.ibase.aist.go.jp/strata/VOL_JP/EN/index.htm and Geol Surv Japan, AIST, http://www.gsj.jp/).

Smithsonian Sample Collections Database

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

Affiliated Sites

Large Eruptions of Hijiori 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.