Chemical characteristics of newly discovered black smoker fluids and associated hydrothermal plumes at the Rodriguez Triple Junction, Central Indian Ridge

Toshitaka Gamo, Hitoshi Chiba, Toshiro Yamanaka, Takamoto Okudaira, Jun Hashimoto, Shinji Tsuchida, Jun ichiro Ishibashi, Satoshi Kataoka, Urumu Tsunogai, Kei Okamura, Yuji Sano, Ryuichi Shinjo

Research output: Contribution to journalArticle

111 Citations (Scopus)

Abstract

The chemical characteristics of hydrothermal fluids in the Indian Ocean have been revealed for the first time. A hydrothermal field (called the Kairei field), including active black smoker chimneys, was discovered by ROV Kaiko dives at 25°19.17′S, 70°02.40′E (~ 2450 m depth) on the southwestern flank of an off-axis knoll located ~ 15 miles north of the Rodriguez Triple Junction, Central Indian Ridge, after detailed tow-yo surveys of the hydrothermal plume distribution. The temperature of the fluid expelled from the most active chimney was almost stable (359-360°C) throughout three successive days of fluid sampling. The endmember fluid has a chemical composition similar to the hydrothermal fluids sampled from sediment-starved mid-ocean ridges in the Pacific and the Atlantic oceans, suggesting typical interactions between hot fluid and mid-ocean ridge basalts in the subseafloor reaction zone.

Original languageEnglish
Pages (from-to)371-379
Number of pages9
JournalEarth and Planetary Science Letters
Volume193
Issue number3-4
DOIs
Publication statusPublished - 2001

Fingerprint

submarine hydrothermal vents
black smoker
hydrothermal plume
triple junction
plumes
ridges
Fluids
fluid
fluids
hydrothermal fluid
chimneys
Chimneys
mid-ocean ridges
remotely operated vehicle
mid-ocean ridge
mid-ocean ridge basalt
Remotely operated vehicles
Atlantic Ocean
Indian Ocean
chemical composition

Keywords

  • Black Smokers
  • Central Indian Ridge
  • Geochemistry
  • Hydrothermal vents
  • Plumes
  • Rodriguez Triple Junction

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Chemical characteristics of newly discovered black smoker fluids and associated hydrothermal plumes at the Rodriguez Triple Junction, Central Indian Ridge. / Gamo, Toshitaka; Chiba, Hitoshi; Yamanaka, Toshiro; Okudaira, Takamoto; Hashimoto, Jun; Tsuchida, Shinji; Ishibashi, Jun ichiro; Kataoka, Satoshi; Tsunogai, Urumu; Okamura, Kei; Sano, Yuji; Shinjo, Ryuichi.

In: Earth and Planetary Science Letters, Vol. 193, No. 3-4, 2001, p. 371-379.

Research output: Contribution to journalArticle

Gamo, T, Chiba, H, Yamanaka, T, Okudaira, T, Hashimoto, J, Tsuchida, S, Ishibashi, JI, Kataoka, S, Tsunogai, U, Okamura, K, Sano, Y & Shinjo, R 2001, 'Chemical characteristics of newly discovered black smoker fluids and associated hydrothermal plumes at the Rodriguez Triple Junction, Central Indian Ridge', Earth and Planetary Science Letters, vol. 193, no. 3-4, pp. 371-379. https://doi.org/10.1016/S0012-821X(01)00511-8
Gamo, Toshitaka ; Chiba, Hitoshi ; Yamanaka, Toshiro ; Okudaira, Takamoto ; Hashimoto, Jun ; Tsuchida, Shinji ; Ishibashi, Jun ichiro ; Kataoka, Satoshi ; Tsunogai, Urumu ; Okamura, Kei ; Sano, Yuji ; Shinjo, Ryuichi. / Chemical characteristics of newly discovered black smoker fluids and associated hydrothermal plumes at the Rodriguez Triple Junction, Central Indian Ridge. In: Earth and Planetary Science Letters. 2001 ; Vol. 193, No. 3-4. pp. 371-379.
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AU - Ishibashi, Jun ichiro

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