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Low silica activity for hydrogen generation during serpentinization: An example of natural serpentinites in the Mineoka ophiolite complex, central Japan
https://hiroshima.repo.nii.ac.jp/records/2006778
https://hiroshima.repo.nii.ac.jp/records/2006778243fd195-e4fe-433b-9be0-dd806ac5455e
名前 / ファイル | ライセンス | アクション |
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Item type | デフォルトアイテムタイプ_(フル)(1) | |||||||||||
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公開日 | 2023-03-18 | |||||||||||
タイトル | ||||||||||||
タイトル | Low silica activity for hydrogen generation during serpentinization: An example of natural serpentinites in the Mineoka ophiolite complex, central Japan | |||||||||||
言語 | en | |||||||||||
作成者 |
Katayama, Ikuo
× Katayama, Ikuo
× Kurosaki, Iori
× Hirauchi, Ken-ichi
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アクセス権 | ||||||||||||
アクセス権 | open access | |||||||||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||||
権利情報 | ||||||||||||
権利情報 | Copyright (c) 2010 Elsevier B.V. | |||||||||||
主題 | ||||||||||||
主題Scheme | Other | |||||||||||
主題 | serpentinite | |||||||||||
主題 | ||||||||||||
主題Scheme | Other | |||||||||||
主題 | magnetite | |||||||||||
主題 | ||||||||||||
主題Scheme | Other | |||||||||||
主題 | hydrogen | |||||||||||
主題 | ||||||||||||
主題Scheme | Other | |||||||||||
主題 | silica activity | |||||||||||
主題 | ||||||||||||
主題Scheme | Other | |||||||||||
主題 | hydrothermal vent system | |||||||||||
主題 | ||||||||||||
主題Scheme | Other | |||||||||||
主題 | microbial community | |||||||||||
主題 | ||||||||||||
主題Scheme | NDC | |||||||||||
主題 | 450 | |||||||||||
内容記述 | ||||||||||||
内容記述 | The textural evolution in the serpentinite of the Mineoka ophiolite complex has been investigated to constrain the natural environment for hydrogen production in the serpentinite-hosted hydrothermal vent systems. Textural relations of the serpentinites from the Mineoka ophiolite indicate at least two stages in the process of serpentinization, with the replacement of olivine by a mesh texture of serpentine and brucite, followed by the development of magnetite-bearing or -free serpentine veins. The generation of hydrogen during serpentinization, which accompanies the formation of magnetite, involves a silica-depletion reaction, as evidenced by the low abundance of serpentine in the magnetite-bearing veins and the absence of magnetite in pseudomorphs of orthopyroxene. Direct evidence for the production of hydrogen and strongly reducing conditions is provided by CH4 and H-2-bearing inclusions in relic olivine crystals; the production of methane and hydrogen may have provided a suitable environment for microbial activity in hydrothermal vent systems along the seafloor. Our results indicate that low silica activity plays a key role in the generation of hydrogen during serpentinization, and that low silica activity environments are possible in olivine-rich rocks such as dunite, or during local disequilibrium in other silica-poor rocks in the mantle lithosphere. | |||||||||||
言語 | en | |||||||||||
出版者 | ||||||||||||
出版者 | Elsevier Science BV | |||||||||||
言語 | ||||||||||||
言語 | eng | |||||||||||
資源タイプ | ||||||||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||
資源タイプ | journal article | |||||||||||
出版タイプ | ||||||||||||
出版タイプ | AO | |||||||||||
出版タイプResource | http://purl.org/coar/version/c_b1a7d7d4d402bcce | |||||||||||
関連情報 | ||||||||||||
識別子タイプ | DOI | |||||||||||
関連識別子 | 10.1016/j.epsl.2010.07.045 | |||||||||||
関連情報 | ||||||||||||
識別子タイプ | DOI | |||||||||||
関連識別子 | http://dx.doi.org/10.1016/j.epsl.2010.07.045 | |||||||||||
収録物識別子 | ||||||||||||
収録物識別子タイプ | ISSN | |||||||||||
収録物識別子 | 0012-821X | |||||||||||
収録物識別子 | ||||||||||||
収録物識別子タイプ | NCID | |||||||||||
収録物識別子 | AA00631029 | |||||||||||
開始ページ | ||||||||||||
開始ページ | 199 | |||||||||||
書誌情報 |
Earth and Planetary Science Letters Earth and Planetary Science Letters 巻 298, 号 1-2, p. 199-204, 発行日 2010-09-15 |
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旧ID | 30872 |