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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 17.32°S
  • 179.4°E

  • 522 m
    1712 ft

  • 245020
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Koro.

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

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

Basic Data

Volcano Number

Last Known Eruption



Unknown - Evidence Uncertain

522 m / 1712 ft


Volcano Types

Pyroclastic cone(s)

Rock Types

Basalt / Picro-Basalt

Tectonic Setting

Subduction zone
Crustal thickness unknown


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

Geological Summary

The 16 x 9 km, shark-tooth-shaped Koro Island, located between Fiji's Viti Levu and Vanua Levu Islands, is part of the volcanic Lomaiviti Islands. A chain of basaltic cinder cones of upper Pleistocene or possibly Holocene age extends from north to south along the crest of the island (Coulson, 1976). With the exception of one location on the west coast where young lava flows reached the sea, the youngest lava flows, erupted from the NNE-SSW-trending cinder cone chain, are confined to the central plateau, where they form a flat, undissected lava field that extends primarily to the east.


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

Coulson F I E, 1976. Geology of the Lomaiviti and Moala Island Groups. Fiji Min Res Div Bull, 2: 1-162.

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

Photo Gallery

The 16 x 9 km, shark-tooth-shaped Koro Island is located between Fiji's two major island groups. A chain of cinder cones of upper Pleistocene or possibly Holocene age extends along the crest of the island from the NE tip (upper right) to the sharp-pointed southern tip. The youngest lava flows are mostly confined to the central plateau, the flat area around the small weather cloud north of the prominent SE-trending drainage. The flat, undissected lava field extends primarily to the east.

NASA Space Shuttle image STS111-719-74, 2002 (http://eol.jsc.nasa.gov/).

Smithsonian Sample Collections Database

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

Affiliated Sites

Large Eruptions of Koro 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.