Ojin Seamount

Ōjin Seamount, also called Ōjin Guyot, named after Emperor Ōjin, 15th Emperor of Japan, is a guyot of the Hawaiian-Emperor seamount chain in the Pacific Ocean.[1] It erupted 55 million years ago.[2]

See also


  1. ^ (Clague et al. 1980, p. 848)
  2. ^ (Seach 2014)


  • Seach, John. "Ōjin Seamount - John Seach". Volcanic database. Volcano Live.com. Retrieved 2014-08-09.
  • Jackson, Everett D.; Koizumi, Itaru; Kirkpatrick, R. James; Avdeiko, Gennady; Clague, David A.; Dalrymple, G. Brent; Karpoff, Anne-Marie; McKenzie, Judith; Butt, Arif; Ling, Hsin Yi; Takayama, Toshiaki; Green, H. Gary; Morgan, Jason; Kono, Masaru (1980). "Site 430: Ōjin Seamount" (PDF). Deep Sea Drilling Project Initial Reports. 55: 45–76. doi:10.2973/dsdp.proc.55.103.1980.
  • Clague, David A.; Dalrymple, G. Brent; Greene, H. Gary; Wald, Donna; Kono, Masaru; Kroenke, Loren W. (1980). "Bathymetry of the Emperor Seamounts" (PDF). Deep Sea Drilling Project Initial Reports. 55: 845–849. doi:10.2973/dsdp.proc.55.140.1980.
  • Watts, A. B.; Ribe, N. M. (December 10, 1984). "On Geoid Heights and Flexure of the Lithosphere at Seamounts" (PDF). Journal of Geophysical Research. 89 (B13): 11152–11170. doi:10.1029/jb089ib13p11152. Archived from the original (PDF) on March 14, 2016.

Coordinates: 38°15′N 171°00′E / 38.250°N 171.000°E

Koko Guyot

Koko Guyot (also sometimes known as Kinmei and Koko Seamount) is a 48.1-million-year-old guyot, a type of underwater volcano with a flat top, which lies near the southern end of the Emperor seamounts, about 200 km (124 mi) north of the "bend" in the volcanic Hawaiian-Emperor seamount chain. Pillow lava has been sampled on the north west flank of Koko Seamount, and the oldest dated lava is 40 million years old. Seismic studies indicate that it is built on a 9 km (6 mi) thick portion of the Pacific Plate. The oldest rock from the north side of Koko Seamount is dated at 52.6 and the south side of Koko at 50.4 million years ago. To the southeast of the bend is Kimmei Seamount at 47.9 million years ago and southeast of it, Daikakuji at 46.7.

Outline of oceanography

The following outline is provided as an overview of and introduction to Oceanography.

Notable eruptions
and vents


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