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 language | English |
|---|---|
| Pages (from-to) | 371-379 |
| Number of pages | 9 |
| Journal | Earth and Planetary Science Letters |
| Volume | 193 |
| Issue number | 3-4 |
| DOIs | |
| Publication status | Published - 2001 |
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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 journal › Article
}
TY - JOUR
T1 - Chemical characteristics of newly discovered black smoker fluids and associated hydrothermal plumes at the Rodriguez Triple Junction, Central Indian Ridge
AU - Gamo, Toshitaka
AU - Chiba, Hitoshi
AU - Yamanaka, Toshiro
AU - Okudaira, Takamoto
AU - Hashimoto, Jun
AU - Tsuchida, Shinji
AU - Ishibashi, Jun ichiro
AU - Kataoka, Satoshi
AU - Tsunogai, Urumu
AU - Okamura, Kei
AU - Sano, Yuji
AU - Shinjo, Ryuichi
PY - 2001
Y1 - 2001
N2 - 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.
AB - 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.
KW - Black Smokers
KW - Central Indian Ridge
KW - Geochemistry
KW - Hydrothermal vents
KW - Plumes
KW - Rodriguez Triple Junction
UR - http://www.scopus.com/inward/record.url?scp=0035688594&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035688594&partnerID=8YFLogxK
U2 - 10.1016/S0012-821X(01)00511-8
DO - 10.1016/S0012-821X(01)00511-8
M3 - Article
AN - SCOPUS:0035688594
VL - 193
SP - 371
EP - 379
JO - Earth and Planetary Sciences Letters
JF - Earth and Planetary Sciences Letters
SN - 0012-821X
IS - 3-4
ER -