Photo of this volcano
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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 7.33°S
  • 146.708°E

  • 1500 m
    4920 ft

  • 253003
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Koranga.

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

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

Basic Data

Volcano Number

Last Known Eruption



Unknown - Evidence Credible

1500 m / 4920 ft


Volcano Types

Lava dome(s)

Rock Types

Andesite / Basaltic Andesite

Tectonic Setting

Subduction zone
Continental crust (> 25 km)


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

Geological Summary

Koranga Crater, a Pliocene-to-Holocene hydrothermal explosion vent complex (Pigram et al., 1977), is located in the Morobe goldfields in the Owen Stanley Range SW of Huon Gulf. The gold mineralization here prompted one of the world's last great gold rushes, beginning in 1922. Gold mineralization is thought to have been related to Pliocene maar formation and dacitic and andesitic lava dome extrusion. Gas emission and a landslide from Koranga in May 1967 were considered to have had either a non-volcanic (Pigram et al., 1977; Fisher and Branch, 1981) or hydrothermal-eruption origin (Sillitoe et al., 1984).


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

Fisher N H, Branch C D, 1981. Late Cainozoic volcanic deposits of the Morobe goldfield. Geol Surv Papua New Guinea Mem, 10: 249-256.

Pigram C J, Johnson R W, Taylor G A M, 1977. Investigation of hot gas emissions from Koranga volcano, Papua New Guinea, in 1967. Aust Bur Min Resour Geol Geophys Jour, 2: 59-62.

Sillitoe R H, Baker E M, Brook W A, 1984. Gold deposits and hydrothermal eruption breccias associated with a maar volcano at Wau, Papua New Guinea. Econ Geol, 79: 638-655.

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

Photo Gallery

Koranga Crater, a Pliocene-to-Holocene hydrothermal explosion vent complex, is located in the Morobe goldfields of the Owen Stanley Range at the eastern end of the New Guinea Highlands. The gold mineralization here prompted one of the world's last great gold rushes in 1922. A landslide and possible hydrothermal explosion in May 1967 from a vent at the upper right produced the fresh landslide deposits seen in this photo. The volcanic origin of this event is uncertain.

Photo by Wally Johnson, 1969 (Australia Bureau of Mineral Resources).

Smithsonian Sample Collections Database

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

Affiliated Sites

Large Eruptions of Koranga 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.