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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 5.83°S
  • 154.93°E

  • 2200 m
    7216 ft

  • 255000
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Tore.

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

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

Basic Data

Volcano Number

Last Known Eruption



Unknown - Evidence Credible

2200 m / 7216 ft


Volcano Types

Lava cone

Rock Types

Andesite / Basaltic Andesite

Tectonic Setting

Subduction zone
Crustal thickness unknown


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

Geological Summary

A 6 x 9 km caldera at Tore volcano in the Emperor Range on NW Bougainville Island is the source of two Pleistocene ignimbrites that form a broad fan that extends the coastline to the west. The southern and SW sides of the caldera rim are covered by lava flows that extend up to 14 km from a large post-caldera lava cone. The summit of the andesitic volcano consists of an erosional pyramidal peak and a forested satellitic ash cone 3 km to the NW. The freshly preserved features of the post-caldera ash cone and lava cone indicate a Recent age (Blake and Miezitis, 1967).


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

Blake D H, Miezitis Y, 1967. Geology of Bougainville and Buka Islands, New Guinea. Aust Bur Min Resour Geol Geophys Bull, 93: 1-56.

McKee C O, Johnson R W, Rogerson R, 1990. Explosive volcanism on Bougainville Island: ignimbrites, calderas, and volcanic hazards. Proc Pacific Rim Cong 1990, 2: 237-245.

Rogerson R J, Hilyard D B, Finlayson E J, Johnson R W, Mckee C O, 1989. The geology and mineral resources of Bougainville and Buka Islands, Papua New Guinea. Geol Surv Papua New Guinea Mem, no 16.

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

The Global Volcanism Program has no synonyms or subfeatures listed for Tore.

Photo Gallery

Much of the left side of this NASA image with north to the upper left is covered by volcanic products from Tore volcano in the Emperor Range on NW Bougainville Island. The Tore massif lies to the left of the light-colored area at the center of the image, Balbi volcano. Two Pleistocene ignimbrites from Tore formed a broad fan that extends the coastline to the west (lower left). The dark-colored caldera lake of Billy Mitchell volcano is at the right, above an ash plume originating from Bagana volcano.

NASA Space Shuttle image ISS001-358-32, 2001 (

Smithsonian Sample Collections Database

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

Affiliated Sites

Large Eruptions of Tore 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.