Pako Guyot

Bathymetry

Coordinates: 15°30′N 155°0′E / 15.500°N 155.000°E / 15.500; 155.000Pako Guyot (also known as Caiwei[1] or Pallada after the Russian frigate Pallada.[2]) is a guyot in the Pacific Ocean, which reaches a depth of 1,210 metres (3,970 ft). It has dimensions of 40 by 65 kilometres (25 mi × 40 mi) and features a summit plateau 2,056 square kilometres (794 sq mi) wide[3] with a shape corresponding to an irregular rectangle-triangle.[2] It is part of the Magellan Seamounts.[4] The seamount was volcanically active 91.3 million years ago[5] and may have formed on a hotspot together with Ioah Guyot and Vlinder Guyot;[6] a late phase of volcanism may have taken place in the Paleocene-Eocene.[7]

Volcanic rocks dredged from Pako are of sodium-potassium hawaiitic and trachybasaltic composition[2] and geochemically resemble these erupted by the Rarotonga hotspot.[8] Corals and squat lobsters have been found on the seamount.[9] Ophiuroids, most of which are symbiotic with corals and sponges, live on the seamount and its flanks,[10] and the seamount features substantial deposits of ferromanganese and phosphorite ores.[2]

See also

References

  1. ↑ Zhang, Dongsheng; Lu, Bo; Wang, Xiaogu; Lin, Shiquan; Wang, Chunsheng (April 2015). "Ophiuroids from the Caiwei(Pako) guyot in the northwest Pacific". SAO/NASA ADS.
  2. 1 2 3 4 "Гайот Паллада (15°18.00' N 155°00.00' E )". Магеллановы горы (Тихий океан) (in Russian). Shirshov Institute of Oceanology. Retrieved 2018-10-06.
  3. ↑ Okamoto, Nobuyuki; Usui, Akira (4 March 2014). "Regional Distribution of Co-Rich Ferromanganese Crusts and Evolution of the Seamounts in the Northwestern Pacific". Marine Georesources & Geotechnology. 32 (3): 194. doi:10.1080/1064119x.2013.877110. ISSN 1064-119X.
  4. ↑ Lee, Tae-Gook; Hein, James R.; Lee, Kiehwa; Moon, Jai-Woon; Ko, Young-Tak (October 2005). "Sub-seafloor acoustic characterization of seamounts near the Ogasawara Fracture Zone in the western Pacific using chirp (3–7kHz) subbottom profiles". Deep Sea Research Part I: Oceanographic Research Papers. 52 (10): 1934. doi:10.1016/j.dsr.2005.04.009. ISSN 0967-0637.
  5. ↑ Lee, Tae-Gook; Lee, Kiehwa; Hein, James R.; Moon, Jai-Woon (March 2009). "Geophysical investigation of seamounts near the Ogasawara Fracture Zone, western Pacific". Earth, Planets and Space. 61 (3): 320. doi:10.1186/bf03352914. ISSN 1343-8832.
  6. ↑ Lee, Tae-Gook; Moon, Jai-Woon; Jung, Mee-Sook (April 2009). "Three-dimensional flexure modelling of seamounts near the Ogasawara Fracture Zone in the western Pacific". Geophysical Journal International. 177 (1): 249. doi:10.1111/j.1365-246X.2008.04054.x. ISSN 0956-540X.
  7. ↑ Mel’nikov, M. E.; Pletnev, S. P.; Anokhin, V. M.; Sedysheva, T. E.; Ivanov, V. V. (November 2016). "Volcanic edifices on guyots of the Magellan Seamounts (Pacific Ocean)". Russian Journal of Pacific Geology. 10 (6): 439. doi:10.1134/s1819714016060038. ISSN 1819-7140.
  8. ↑ Koppers, Anthony A. P.; Staudigel, Hubert; Pringle, Malcolm S.; Wijbrans, Jan R. (October 2003). "Short-lived and discontinuous intraplate volcanism in the South Pacific: Hot spots or extensional volcanism?". Geochemistry, Geophysics, Geosystems. 4 (10). doi:10.1029/2003gc000533. ISSN 1525-2027.
  9. ↑ DONG, DONG; LI, XINZHENG; LU, BO; WANG, CHUNSHENG (24 August 2017). "Three squat lobsters (Crustacea: Decapoda: Anomura) from tropical West Pacific seamounts, with description of a new species of Uroptychus Henderson, 1888". Zootaxa. 4311 (3): 389. doi:10.11646/zootaxa.4311.3.4.
  10. ↑ Zhang, Dongsheng; Lu, Bo; Wang, Xiaogu; Lin, Shiquan; Wang, Chunsheng (April 2015). "Ophiuroids from the Caiwei(Pako) guyot in the northwest Pacific". SAO/NASA ADS.
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