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Charles Darwin volcanic field

Charles Darwin volcanic field is a submarine volcanic field in the Cape Verde islands.

Bathymetric map of the Charles Darwin volcanic field

It was discovered by the RRS Charles Darwin.[1]

It lies southwest of Santo Antao island at 3,600 metres (11,800 ft) depth. Two vents are named Tambor and Kolá; the first is 2,500 metres (8,200 ft) wide and 250 metres (820 ft) high while the second is 1,000 metres (3,300 ft) wide and 260 metres (850 ft) deep. Both feature 1 kilometre (0.62 mi) wide pit craters.[2] Other vents are known as Tabanka, Batuku, Mandora, De Saude and Koladera. Vents in the Charles Darwin volcanic field include cones with pahoehoe, pillow lavas, scoria and have erupted basalts with xenoliths.[3] Unusually for volcanoes at such depths, they show evidence of explosive eruptions. Volcanic rocks appear to be 1,000s or 10,000s of years old[1] and there is no evidence of Holocene activity but the volcanic field was active in recent times and seismic swarms have been recorded.[4]

Corals and sponges grow on the volcanoes.[5] Bioluminescent gorgonians have been sampled at the Charles Darwin volcanic field.[6]

References edit

  1. ^ a b Hansteen, Kwasnitschka & Klügel 2014, p. 19.
  2. ^ Kwasnitschka, T.; Devey, C. W.; Hansteen, T. H.; Freundt, A.; Kutterolf, S. (December 2013). "Explosive Volcanic Activity at Extreme Depths: Evidence from the Charles Darwin Volcanic Field, Cape Verdes". AGUFM. 2013: V41D–2843. Bibcode:2013AGUFM.V41D2843K.
  3. ^ Hansteen, Kwasnitschka & Klügel 2014, pp. 22–23.
  4. ^ Faria, B.; Fonseca, J. F. B. D. (28 February 2014). "Investigating volcanic hazard in Cape Verde Islands through geophysical monitoring: network description and first results". Natural Hazards and Earth System Sciences. 14 (2): 496. Bibcode:2014NHESS..14..485F. doi:10.5194/nhess-14-485-2014. ISSN 1561-8633.
  5. ^ Hansteen, Kwasnitschka & Klügel 2014, p. 7.
  6. ^ Raddatz, Jacek; López Correa, Matthias; Rüggeberg, Andres; Dullo, Wolf-Christian; Hansteen, Thor (September 2011). "Bioluminescence in deep-sea isidid gorgonians from the Cape Verde archipelago". Coral Reefs. 30 (3): 579. Bibcode:2011CorRe..30..579R. doi:10.1007/s00338-011-0743-5. ISSN 0722-4028.

Sources edit

  • Hansteen, Thor; Kwasnitschka, Tom; Klügel, Andreas (2014). Cape Verde Seamounts - Cruise No. M80/3 - December 29, 2009 - February 1, 2010 - Dakar (Senegal) - Las Palmas de Gran Canaria (Spain) (Report). Bremen.

charles, darwin, volcanic, field, submarine, volcanic, field, cape, verde, islands, bathymetric, discovered, charles, darwin, lies, southwest, santo, antao, island, metres, depth, vents, named, tambor, kolá, first, metres, wide, metres, high, while, second, me. Charles Darwin volcanic field is a submarine volcanic field in the Cape Verde islands Bathymetric map of the Charles Darwin volcanic fieldIt was discovered by the RRS Charles Darwin 1 It lies southwest of Santo Antao island at 3 600 metres 11 800 ft depth Two vents are named Tambor and Kola the first is 2 500 metres 8 200 ft wide and 250 metres 820 ft high while the second is 1 000 metres 3 300 ft wide and 260 metres 850 ft deep Both feature 1 kilometre 0 62 mi wide pit craters 2 Other vents are known as Tabanka Batuku Mandora De Saude and Koladera Vents in the Charles Darwin volcanic field include cones with pahoehoe pillow lavas scoria and have erupted basalts with xenoliths 3 Unusually for volcanoes at such depths they show evidence of explosive eruptions Volcanic rocks appear to be 1 000s or 10 000s of years old 1 and there is no evidence of Holocene activity but the volcanic field was active in recent times and seismic swarms have been recorded 4 Corals and sponges grow on the volcanoes 5 Bioluminescent gorgonians have been sampled at the Charles Darwin volcanic field 6 References edit a b Hansteen Kwasnitschka amp Klugel 2014 p 19 Kwasnitschka T Devey C W Hansteen T H Freundt A Kutterolf S December 2013 Explosive Volcanic Activity at Extreme Depths Evidence from the Charles Darwin Volcanic Field Cape Verdes AGUFM 2013 V41D 2843 Bibcode 2013AGUFM V41D2843K Hansteen Kwasnitschka amp Klugel 2014 pp 22 23 Faria B Fonseca J F B D 28 February 2014 Investigating volcanic hazard in Cape Verde Islands through geophysical monitoring network description and first results Natural Hazards and Earth System Sciences 14 2 496 Bibcode 2014NHESS 14 485F doi 10 5194 nhess 14 485 2014 ISSN 1561 8633 Hansteen Kwasnitschka amp Klugel 2014 p 7 Raddatz Jacek Lopez Correa Matthias Ruggeberg Andres Dullo Wolf Christian Hansteen Thor September 2011 Bioluminescence in deep sea isidid gorgonians from the Cape Verde archipelago Coral Reefs 30 3 579 Bibcode 2011CorRe 30 579R doi 10 1007 s00338 011 0743 5 ISSN 0722 4028 Sources edit Hansteen Thor Kwasnitschka Tom Klugel Andreas 2014 Cape Verde Seamounts Cruise No M80 3 December 29 2009 February 1 2010 Dakar Senegal Las Palmas de Gran Canaria Spain Report Bremen Retrieved from https en wikipedia org w index php title Charles Darwin volcanic field amp oldid 1017220577, wikipedia, wiki, book, books, library,

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