Fukujin Vent



Latitude: 21.942οN                   Longitude: 143.458οE             Depth: 217 m bsl

Alternative Names:     Fukujin-Kaizan, Fukujin-Okanoba, Hukuzin-Okaba, Hukuzin-Okanoba, Hukuzin-Kaizan (Volcano Global Risk Identification and Analysis Project)

Fukujin is one of the largest submarine volcanoes in the Northern Seamount Province (Bloomer et al., 1989) with a simple conical shape (Yamazaki et al., 1993). The last known eruption was in 1974 and since then intermittent water discoloration and floating pumice have been observed. There is no direct evidence for hydrothermal activity, because it has not been visited on the bottom. Lavas dredged from Fukujin are mainly porphyritic basaltic andesites, with a few nearly aphyric, medium-K siliceous andesites (Stern et al., 1993).

Table 1: Operations history for Fukujin vent

Ship/ Platform Operation Year References

TN-153     R/V T. G.


EM 300 multibeam; CTD vertical cast 2003 February – March Submarine Ring of Fire 2003

Table 2: Vent activity and host rocks

Activity and host rocks References
 Activity Active volcano,

Last erupted 1974

Bloomer et al., 1989b: Baker et al., 2008, Fryer et al., 1997, InterRidge Vents Database Ver. 3.4, Smithsonian Global Volcanism Program
Host Rocks Andesite and Basaltic andesite Bloomer et al., 1989
Low-and medium-K Tholeiitic andesites and Basaltic andesites Stern et al., 1993

Vent fluid characteristics: None known

Vent Biology: None known

Images: None known

Video Links: None known


  1. Bloomer, S. H., Stern, R. J., Fisk, E., Geschwind, C. H., 1989. Shoshonitic Volcanism in the Northern Mariana Arc. 1. Mineralogic and Major and Trace Element Characteristics. Journal of Geophysical Research 94 (B4), 4469-4496.
  2. Stern, R. J., Jackson, M. C., Fryer, P., Ito, E., 1993. O, Sr, Nd and Pb isotopic composition of the Kasuga Cross-Chain in the Mariana Arc: A new perspective on the K-h relationship. Earth and Planetary Science Letters 119, 459-475.
  3. Yamazaki, T., Murakami, F., Saito, E., 1993. Mode of seafloor spreading in the northern Mariana Trough. Tectonophysics 221, 207-222.

Website References:

  1. International cooperation in ridge-crest studies: InterRidge Vents Database Version 3; (accessed 11.19.2015)
  2. Smithsonian Institution, National Museum of Natural History: Global Volcanism Program, (accessed 11.19.2015)
  3. Volcano Global Risk Identification and Analysis Project (VOGRIPA), (accessed 11.19.2015)

Cruise Reports:

  1. Submarine Ring of Fire 2003 (accessed 11.25.2015)