Trace element anomaly in fault rock induced by coseismic hydrothermal reactions reproduced in laboratory friction experiments

DOI Web Site Web Site 被引用文献5件 参考文献27件
  • Wataru Tanikawa
    Kochi Institute for Core Sample Research Japan Agency for Marine‐Earth Science and Technology Nankoku Japan
  • Tsuyoshi Ishikawa
    Kochi Institute for Core Sample Research Japan Agency for Marine‐Earth Science and Technology Nankoku Japan
  • Go Honda
    Department of Earth and Space Science, Graduate School of Science Osaka University Toyonaka Japan
  • Tetsuro Hirono
    Department of Earth and Space Science, Graduate School of Science Osaka University Toyonaka Japan
  • Osamu Tadai
    Marine Works Japan Ltd. Nankoku Japan

書誌事項

公開日
2015-05-05
資源種別
journal article
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1002/2015gl063195
公開者
American Geophysical Union (AGU)

この論文をさがす

説明

<jats:title>Abstract</jats:title><jats:p>Friction experiments at high velocities (0.1 to 0.4 m/s) at room temperature under high pore fluid pressures (2 or 5 MPa) and trace element analyses of the run products were carried out on simulated fault gouge derived from the Chelungpu fault, Taiwan. The friction coefficient decreased to ~0.1 during sliding, and the slip surface temperature reached 300°C by 6 m of slip displacement. The slip caused a small, but distinct decrease of Li in the deformed gouge when the slip surface temperature exceeded 300°C. The observed Li depletion agreed with calculated results, indicating that it resulted from a hydrothermal reaction at a high temperature produced by short‐duration (up to 40 s) frictional heating. The geochemical data suggest a small fluid/rock ratio and low reaction temperature in the simulated fault, which is explained by higher normal stress or repeated earthquakes which elevated fluid‐rock ratios in the natural fault.</jats:p>

収録刊行物

被引用文献 (5)*注記

もっと見る

参考文献 (27)*注記

もっと見る

関連プロジェクト

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ