Boisa

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  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 3.994°S
  • 144.963°E

  • 240 m
    787 ft

  • 251011
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

There are no activity reports for Boisa.



 Available Weekly Reports

There are no Weekly Reports available for Boisa.

There are no Holocene eruptions known for Boisa. If this volcano has had large eruptions prior to 10,000 years ago, information might be found in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Gust D A, Johnson R W, 1981. Amphibole-bearing inclusions from Boisa Island, Papua New Guinea: evaluation of the role of fractional crystallization in an andesitic volcano. J Geol, 89: 219-232.

Johnson R W, 1993. . (pers. comm.).

Johnson R W, Taylor G A M, Davies R A, 1972. Geology and petrology of Quaternary volcanic islands off the north coast of New Guinea. Aust Bur Min Resour Geol Geophys Rec, 1972/21: 1-127.

The small, 1.4 x 1.7 km Boisa, or Aris Island consists of a large basaltic-andesitic cone with a summit crater open to the north whose rim extends to the island's east coast. The crater of the basaltic older cone is filled by two steep-sided andesitic lava domes, the highest of which forms the 240-m high point of the island. A third lava dome, separated from the eastern cone by a low saddle, forms a peninsula on the western side of the island. No historical eruptions or present-day thermal activity have been observed, although the last eruption may have been quite recent judging by the youthful morphology of the island (Gust and Johnson, 1981).