Havre Seamount

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  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 31.11°S
  • 179.04°E

  • -720 m
    -2362 ft

  • 242005
  • Latitude
  • Longitude

  • Summit

  • Volcano

There are no activity reports for Havre Seamount.

 Available Weekly Reports

There are no Weekly Reports available for Havre Seamount.

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

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
2012 Jul 17 ± 0 years ± 0 days 2012 Jul 19 ± 0 years ± 0 days Confirmed   Historical Observations

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.

Wright I C, Worthington T J, Gamble J A, 2006. New multibeam mapping and geochemistry of the 30°-35° S sector, and overview, of southern Kermadec arc volcanism. J Volc Geotherm Res, 149: 263-296.

Havre Seamount has a caldera capping a 1-km-high edifice. Located on the Kermadec ridge of the Kermadec microplate, it is believed to have erupted in July 2012, the first historical evidence of activity. The caldera has an asymmetric morphology with the N rim comprising mostly a single inner topographic wall, and the S rim comprising both an outer topographic rim and inner wall separated by a 1.1-1.4-km-wide terrace. Smaller craters occur on this terrace. Rocks from the caldera wall include aphyric and plagioclase-bearing basalt-andesite, aphyric and plagioclase- and pyroxene-bearing dacite, gabbro, diorite, and pumice (Wright et al., 2006).