@article{oai:kanazawa-u.repo.nii.ac.jp:00029328,
 author = {間中, 光雄 and 福士, 圭介 and 宮下, 由香里 and 伊藤, 順一 and 渡部, 芳夫 and 小林, 健太 and 亀井, 淳志},
 issue = {8},
 journal = {地質学雑誌 = Journal of the Geological Society of Japan},
 month = {Jan},
 note = {本研究では，低活動性断層の活動性を評価する手法開発のために，2000年鳥取県西部地震の余震域と非余震域（日南湖リニアメント）から採取した断層ガウジに対して鉱物学的・化学的手法を用いて，両断層ガウジを比較した．粉末X線回折分析と逐次選択抽出試験の結果，余震域断層ガウジはイライトと緑泥石を主とし，非余震域断層ガウジはハロイサイトを主とする．余震域ガウジの含有鉄は主にイライトに，非余震域ガウジの鉄は主に非晶質と結晶性鉄鉱物に存在する．L＊a＊b＊表色系の色調測定の結果，L＊値の差はイライトとハロイサイトの違いを表し，余震域ガウジの負値のa＊は緑泥石の存在を，非余震域ガウジの正値のa＊は結晶性鉄鉱物の存在を示す．これら鉱物学的・化学的特徴にて，2000年鳥取県西部地震の余震域と非余震域の断層ガウジを明確に判別でき，その見極めには現場露頭でも簡便に実施できる色調測定が有効であることが示唆された． We examined and compared mineralogical and geochemical properties of fault gouges in the aftershock and non-aftershock areas of the 2000 Tottori-ken Seibu earthquake, to establish a new method for evaluating the activity of low-activity faults. The gouges were examined using X-ray powder diffraction analysis, sequential selective extraction tests, and color measurements. Results show that the aftershock-area gouge is mainly composed of illite and chlorite, while the non-aftershock-area gouge is mainly composed of halloysite. Iron in the aftershock-area gouge is mainly contained in illite, while in the non-aftershock-area gouge, it is mainly in the form of amorphous and crystalline iron oxide. Results of color measurements (L∗a∗b∗ color space) show that differences in L∗ values represent differences in the presence/absence of illite and halloysite, negative a∗ values from the aftershock-area gouge represent the presence of chlorite, and positive a∗ values from the non-aftershock-area gouge represent the presence of crystalline iron oxide. These results indicate that mineralogical and geochemical characteristics can clearly distinguish fault gouges in aftershock and non-aftershock areas of the 2000 Tottori-ken Seibu earthquake, and that color measurements can be an effective and simple proxy method for the screening of gouges that require further analysis in the field., 環日本海域環境研究センター},
 pages = {459--475},
 title = {2000年鳥取県西部地震の余震域と非余震域に分布する断層ガウジの比較},
 volume = {118},
 year = {2012}
}