断層粘土中の石英粒子の表面構造による断層活動性の評価の試み　Ｉ　　表面構造の分類と形成過程

DOI Web Site 被引用文献3件

書誌事項

タイトル別名
  • Dating Fault Activity by Surface Textures of Quartz Grains from Fault Gouges (Part I)
  • ダンソウ ネンドチュウ ノ セキエイ リュウシ ノ ヒョウメン コウゾウ ニヨ
  • 表面構造の分類と形成過程

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説明

Surface textures of quartz grains from about 250 fault gouge samples with various types of fault in Japan are examined by means of the scanning electron microscope. It is disclosed that the surface morphology of the grains is variable, but quartz grains extracted from one fault gouge sample commonly show a type of texture different from those observed on the grains from the other samples. The surface textures observed under the microscope are tentatively classified into eight types; subconcoidal, orange peel-like, fish scale-like, moss-like, motheaten, stalactitic, pot-hole, and coral-like textures. These textures can be classified into four groups of I to IV. Arranged in the order of their apparent features, it is interpreted that the progressive corrosion of quartz grains by ground water has taken place after faulting. The change of this surface feature can assist in estimating the time elapsed since the last fault activity.

収録刊行物

  • 応用地質

    応用地質 23 (1), 18-32, 1982

    一般社団法人 日本応用地質学会

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