Unnamed

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  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 24.8°S
  • 177.02°W

  • -385 m
    -1263 ft

  • 243001
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

There are no activity reports for Unnamed.



 Available Weekly Reports

There are no Weekly Reports available for Unnamed.

There are no Holocene eruptions known for Unnamed. 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.

Stoffers P, Worthington T J, Schwarz-Schampera U, Hannington M D, Massoth G J, Hekinian R, Schmidt M, Lundsten L J, Evans L J, Vaiomo'unga R, Kerby T, 2006. Submarine volcanoes and high-temperature hydrothermal venting on the Tonga arc, southwest Pacific. Geology, 34: 453-456.

A large submarine volcano located at the southern end of the Tonga arc rises to within 385 m of the sea surface. Known informally as Volcano 19, the basaltic to basaltic-andesite seamount contains two calderas, a 3.5 x 2.5 km wide outer caldera and a 1.9-km-wide inner caldera on the west side of the volcano. A central cone complex lies in the center of the outer caldera, east of the inner caldera. Two large hydrothermal fields are located near the summit of the central cone complex and at the base of the southern wall of the western inner caldera. Large high-temperature chimney vents discharge clear fluids and black smoke.