Venting of carbon dioxide-rich fluid and hydrate formation in mid-Okinawa trough backarc basin

H. Sakai, T. Gamo, E. S. Kim, M. Tsutsumi, T. Tanaka, J. Ishibashi, H. Wakita, M. Yamano, T. Oomori

研究成果: ジャーナルへの寄稿記事

222 引用 (Scopus)

抜粋

Carbon dioxide-rich fluid bubbles, containing approximately 86 percent CO2, 3 percent H2S, and 11 percent residual gas (CH 4 + H2), were observed to emerge from the sea floor at 1335- to 1550-m depth in the JADE hydrothermal field, mid-Okinawa Trough. Upon contact with seawater at 3.8°C, gas hydrate immediately formed on the surface of the bubbles and these hydrates coalesced to form pipes standing on the sediments. Chemical composition and carbon, sulfur, and helium isotopic ratios indicate that the CO2-rich fluid was derived from the same magmatic source as dissolved gases in 320°C hydrothermal solution emitted from a nearby black smoker chimney. The CO2-rich fluid phase may be separated by subsurface boiling of hydrothermal solutions or by leaching of CO2-rich fluid inclusion during post-eruption interaction between pore water and volcanogenic sediments.

元の言語英語
ページ(範囲)1093-1096
ページ数4
ジャーナルScience
248
発行部数4959
DOI
出版物ステータス出版済み - 1 1 1990
外部発表Yes

    フィンガープリント

All Science Journal Classification (ASJC) codes

  • General

これを引用

Sakai, H., Gamo, T., Kim, E. S., Tsutsumi, M., Tanaka, T., Ishibashi, J., ... Oomori, T. (1990). Venting of carbon dioxide-rich fluid and hydrate formation in mid-Okinawa trough backarc basin. Science, 248(4959), 1093-1096. https://doi.org/10.1126/science.248.4959.1093