- Info & Contacts
The Global Volcanism Program has no activity reports for Unnamed.
The Global Volcanism Program has no Weekly Reports available for Unnamed.
The Global Volcanism Program has no Bulletin Reports available for Unnamed.
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.
The Global Volcanism Program is not aware of any Holocene eruptions from Unnamed. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Unnamed 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 Unnamed.
The Global Volcanism Program has no photographs available for Unnamed.
The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. 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.
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.