Global InformationKoko Guyot information
| Koko Guyot | |
|---|---|
 Elevation of the Pacific seafloor, showing the Hawaiian-Emperor seamount chain, including Koko Guyot above the prominent bend. The sharp "V" separates the Hawaiian Ridge from the older Emperor Seamount portion of the chain. Koko is the largest of the seamounts directly north of the v-bend. | |
| Height | 5,000 m (16,000 ft)[2] |
| Location | |
| Location | Central Pacific |
| Group | Isolated |
| Coordinates | 35°15′N 171°35′E / 35.250°N 171.583°E[1] |
| Geology | |
| Type | Guyot, Hotspot volcano |
| Volcanic arc/chain | Hawaiian-Emperor seamount chain |
| Age of rock | 48.1 million[3] |
| Last eruption | 40 million years ago[4] |
| History | |
| First visit | 1973, ODP Site 308 |
Koko Guyot is a 48.1-million-year-old guyot,[3] 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.[5] Pillow lava has been sampled on the north west flank of Koko Seamount, and the oldest dated lava is 40 million years old.[4] Seismic studies indicate that it is built on a 9 km (6 mi) thick portion of the Pacific Plate.[6] 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.[7]
- ^ "Seamount Catalog". Seamounts database. EarthRef, a National Science Foundation project. Retrieved 2009-04-09.
- ^ Cite error: The named reference
Site1206-Resultswas invoked but never defined (see the help page). - ^ a b Dyar, Darby. "HOTSPOTS AND PLATE MOTION". Archived from the original on 2011-06-07. Retrieved 2009-04-04.
- ^ a b Seach, John. "Koko Seamount, NW Flank - John Seach". Volcanic database. Volcano Live.com. Retrieved 2009-04-09.
- ^ "6. Site 12061 BACKGROUND AND SCIENTIFIC OBJECTIVES". Drilling Site Recommendation Submission for Koko. Ocean Drilling Program. Retrieved 2009-04-09.
- ^ K. FURUKAWA; J. F. GETTRUST; L. W. KROENKE; J. F. Campbell (1980). "Crust and upper mantle structure along the flank of Koko Seamount". Scientific Paper-Abstract. Hawaii Institute of Geophysics University of Hawaii, Honolulu, Hawaii 96822. Retrieved 2009-04-09.
- ^ TenBruggencate, Jan (2006). "Hawaiian geology gets update". Honolulu Advertiser web article. Honolulu Advertiser. Retrieved 2009-04-09.