沖縄トラフ伊平屋北海丘熱水域海底下における熱水変質の特徴

石橋 純一郎; 戸塚 修平; 吉良 優佑; 堤 映日; 堤 彩紀; 野崎 達生; 高谷 雄太郎

doi:10.14862/geochemproc.65.0_126

Abstracts of Annual Meeting of the Geochemical Society of Japan

DOI https://doi.org/10.14862/geochemproc.65.0_126

Conference information

Host: Abstracts of Annual Meeting of the Geochemical Society of Japan

Hydrothermal alteration recognized in drilled cores from an active hydrothermal field at the Iheya North Knoll in the Okinawa Trough

Jun―ichiro Ishibashi, Shuhei Totsuka, Yusuke Kira, Akihi Tsutsumi, *Saki Tsutsumi, Tatsuo Nozaki, Yutaro Takaya

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Keywords: Hydrothermal activity, Scientific drilling, Clay mineral

CONFERENCE PROCEEDINGS FREE ACCESS

Pages 126-

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Abstract

We studied mineralogy and geochemistry of drilled cores obtained from an active hydrothermal field at the Iheya North Knoll in the Okinawa Trough, in order to characterize hydrothermal alteration beneath the seafloor. We revealed alteration minerals caused by high temperature alteration distribute in deeper depth at the site more apart from the hydrothermal mound.

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