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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 2.57°S
  • 147.28°E

  • 254 m
    833 ft

  • 250020
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Baluan.

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

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

Basic Data

Volcano Number

Last Known Eruption



Unknown - Evidence Uncertain

254 m / 833 ft


Volcano Types

Pyroclastic cone

Rock Types

Basalt / Picro-Basalt

Tectonic Setting

Subduction zone
Continental crust (> 25 km)


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

Geological Summary

The circular, 5.5-km-wide island of Baluan in the Admiralty Islands is formed by a Pleistocene stratovolcano with a large summit crater and several flank vents. Some of these might be of Holocene age (Johnson 1990, pers. comm.). In contrast to its neighboring islands to the north, Baluan has erupted basaltic rather than rhyolitic rocks. Sabroma, the elliptical summit crater, has a maximum width of about 1 km. The arcuate rim of the Batapona Mountain pyroclastic cone is prominent at the north edge of the island. Several small islands consisting of cone remnants are located within a kilometer of the north coast. Warm springs occur along the coast. The only historical activity is an uncertain report of a submarine eruption near the island in 1931.


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

Johnson R W, 1990. (pers. comm.).

Johnson R W, Davies R A, 1972. Volcanic geology of the St. Andrew Strait Islands, Bismarck Sea, Papua New Guinea. Geol Surv Papua New Guinea, Note on Invest, 72-002: 1-29.

Katsui Y (ed), 1971. List of the World Active Volcanoes. Volc Soc Japan draft ms, (limited circulation), 160 p.

Reynolds M A, Best J G, Johnson R W, 1980. 1953-57 eruption of Tuluman volcano: rhyolitic volcanic activity in the northern Bismarck Sea. Geol Surv Papua New Guinea Mem, 7: 1-44.

Eruptive History

Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
[ 1931 ] [ Unknown ] Uncertain 0  

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.


Feature Name Feature Type Elevation Latitude Longitude
Batapona Mountain Cone 150 m 2° 37' 0" S 147° 18' 0" E


Feature Name Feature Type Elevation Latitude Longitude
Saboma Crater 254 m 2° 34' 0" S 147° 17' 0" E

Photo Gallery

The circular, 5.5-km-wide island of Baluan (center) in the Admiralty Islands lies SE of Manus Island and across the St. Andrew Strait from Lou and Tuluman Islands (out of view to the north). This Pleistocene stratovolcano has a large summit crater and several flank vents. In contrast to its neighboring islands to the north, Baluan has erupted basaltic rather than rhyolitic rocks. The Pam Islands to the NE are visible at the upper right in this NASA Landsat image (with north to the top).

NASA Landsat7 image (

Smithsonian Sample Collections Database

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

Affiliated Sites

Large Eruptions of Baluan 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.