Minami Kasuga

Photo of this volcano
Google Earth icon
  Google Earth Placemark
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 21.6°N
  • 143.637°E

  • -274 m
    -899 ft

  • 284135
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Minami Kasuga.

The Global Volcanism Program has no Weekly Reports available for Minami Kasuga.

The Global Volcanism Program has no Bulletin Reports available for Minami Kasuga.

Minami Kasuga (South Kasuga) is the central of three NNE-SSW trending volcanoes forming the Kasuga seamount chain, which trends SSE from the volcanic front of the Izu-Marianas arc. Minami Kasuga (also referred to as Kasuga 2) rises from about 3000 m depth to within 170 m of the sea surface and is the highest and largest volume of the three volcanoes. Two subsidiary cones are located low on the eastern flank. The morphology of Minami Kasuga is more complex than Kasuga 1 volcano to the north, and prominent ridges separate slopes of interspersed volcaniclastic and lava flow fields. Radionuclide decay rates indicate an age for Minami Kasuga of less than 8000 years and probably less than 1000 years; radium/thorium disequilibrium ratios suggest the flows may be only a few centuries old (Fryer et al., 1997). Active hydrothermal fields are located at the summit of Minami Kasuga, at the base of summit ridges, and on the lower flanks.

The Global Volcanism Program is not aware of any Holocene eruptions from Minami Kasuga. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Minami Kasuga page in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

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.



Synonyms
Kasuga 2 | Kasuga-Minaminoba | Fukujin-Nakanoba
Minami Kasuga (South Kasuga) submarine volcano is seen in this bathymetric view, looking from the SW with two times vertical exaggeration. Bathymetic data are overlaid on SeaBat data courtesy of Ko-ichi Nakamura, National Institute of Advanced Science and Technology, Japan. Minami Kasuga (also referred to as Kasuga 2) rises from about 3000 m depth to within 170 m of the sea surface. Two subsidiary cones are located low on the eastern flank. Active hydrothermal fields are located at the summit of Minami Kasuga, at the base of summit ridges, and on the lower flanks.

Image courtesy of NOAA vents program, 2006 (http://oceanexplorer.noaa.gov/explorations/06fire).

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.

Fryer P, Gill J B, Jackson M C, 1997. Volcanological and tectonic evolution of the Kasuga seamounts, northern Mariana Trough: Alvin submersible investigations. J Volc Geotherm Res, 79: 277-311.

Japan Meteorological Agency, 1996. National Catalogue of the Active Volcanoes in Japan (second edition). Tokyo: Japan Meteorological Agency, 502 p (in Japanese).

Volcano Types

Submarine
Caldera

Tectonic Setting

Subduction zone
Crustal thickness unknown

Rock Types

Major
Basalt / Picro-Basalt
Andesite / Basaltic Andesite
Trachyandesite / Basaltic trachy-andesite
Minor
Dacite

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
0
0
0
0

Affiliated Databases

Large Eruptions of Minami Kasuga 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).
Smithsonian Collections Search the Smithsonian's NMNH Department of Mineral Sciences collections database. Go to the "Search Rocks and Ores" tab and use the Volcano Name drop-down to find samples.