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Effect of rock weathering, clay mineralogy, and geological structures in the formation of large landslide, a case study from Dumre Besei landslide, Lesser Himalaya Nepal
http://hdl.handle.net/10091/17266
http://hdl.handle.net/10091/1726670dd6dd4-7d5a-4a13-80c8-e0cc5ffad8d7
名前 / ファイル | ライセンス | アクション |
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Effect_rock_weathering_clay_mineralogy_geological_structures.pdf (2.7 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2013-12-02 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Effect of rock weathering, clay mineralogy, and geological structures in the formation of large landslide, a case study from Dumre Besei landslide, Lesser Himalaya Nepal | |||||
言語 | ||||||
言語 | eng | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1007/s10346-011-0311-7 | |||||
関連名称 | 10.1007/s10346-011-0311-7 | |||||
キーワード | ||||||
主題 | Landslide, Himalaya, Weathering, Clay minerals | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Regmi, Amar Deep
× Regmi, Amar Deep× Yoshida, Kohki× Dhital, Megh Raj× Devkota, Krishna |
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信州大学研究者総覧へのリンク | ||||||
氏名 | Yoshida, Kohki | |||||
URL | http://soar-rd.shinshu-u.ac.jp/profile/ja.umThOUkh.html | |||||
出版者 | ||||||
出版者 | SPRINGER HEIDELBERG | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | LANDSLIDES. 10(1):1-13 (2013) | |||||
書誌情報 |
LANDSLIDES 巻 10, 号 1, p. 1-13, 発行日 2013-02 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The Dumre Besi landslide is one of the largest and most problematic failures on the Mugling-Narayanghat Highway in central Nepal. Though it was triggered by the monsoon rain of 2003, geological structures and rock weathering have played a key role in its initiation and further aggravation. The slide is also controlled to some extent by the groundwater and rugged topography with high slope angles. The landslide zone comprises thinly laminated light grey siltstone with numerous crosscutting quartz veins, grey metasandstone (quartzite), bluish grey to white phyllite, black carbonaceous slate, and dolomite. A thrust fault passes through the centre of the landslide, creating a thick deposit of loose, weathered rock material, and the fault has developed a very thick shattered zone where weathering is very intense. Using field and laboratory analyses, the rocks in the landslide zone can be divided into five zones based on the severity of weathering: none, slight, moderate, severe, and complete. Laboratory analyses showed that the chemically weathered rocks are significantly rich in smectite and vermiculite. Out of these, smectite is the most critical one, as it swells when wet. The formation mechanism of the clay minerals was analysed by various techniques, including X-ray diffraction, X-ray fluorescence, and thin-section analysis, and it was found that most of them were derived from weathering of rock. The clay minerals significantly reduced the rock strength and facilitated the extensive failure of Dumre Besi. The wide fault zone with deeply weathered and clay-rich debris is also responsible for the formation of debris flows in the monsoon season. | |||||
資源タイプ(コンテンツの種類) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Article | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1612-510X | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11917577 | |||||
権利 | ||||||
権利情報 | The original publication is available at www.springerlink.com | |||||
出版タイプ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
WoS | ||||||
表示名 | Web of Science | |||||
URL | http://gateway.isiknowledge.com/gateway/Gateway.cgi?&GWVersion=2&SrcAuth=ShinshuUniv&SrcApp=ShinshuUniv&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000314679800001 |