Timing of the Tsergo Ri landslide, Langtang Himal, determined by fission-track dating of pseudotachylyte

Hideo Takagi, Kazunori Arita, Tohru Danhara, Hideki Iwano

    研究成果: Article

    12 引用 (Scopus)

    抄録

    Fission-track dating was carried out on zircon grains from pseudotachylyte associated with a Late Pleistocene landslide (Tsergo Ri landslide) in Langtang Himal, Nepal. Zircon grains were separated from an injection pipe of glassy and vesicular pseudotachylyte about 10 cm in diameter. The resulting age of 51±13 Ka lies between the two subpeaks (70 and 20 Ka) of the Würm glacial period, and is concordant with the previous age estimate from geomorphological evidence (i.e. older than 25-30 Ka). This is the first reliable isotopic age for a landslide-generated pseudotachylyte excluding the possibility of contamination by an inherited age.

    元の言語English
    ページ(範囲)466-472
    ページ数7
    ジャーナルJournal of Asian Earth Sciences
    29
    発行部数2-3
    DOI
    出版物ステータスPublished - 2007 2 1

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    pseudotachylite
    fission track dating
    landslide
    zircon
    pipe
    Pleistocene

    ASJC Scopus subject areas

    • Earth-Surface Processes
    • Geology

    これを引用

    Timing of the Tsergo Ri landslide, Langtang Himal, determined by fission-track dating of pseudotachylyte. / Takagi, Hideo; Arita, Kazunori; Danhara, Tohru; Iwano, Hideki.

    :: Journal of Asian Earth Sciences, 巻 29, 番号 2-3, 01.02.2007, p. 466-472.

    研究成果: Article

    Takagi, Hideo ; Arita, Kazunori ; Danhara, Tohru ; Iwano, Hideki. / Timing of the Tsergo Ri landslide, Langtang Himal, determined by fission-track dating of pseudotachylyte. :: Journal of Asian Earth Sciences. 2007 ; 巻 29, 番号 2-3. pp. 466-472.
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    abstract = "Fission-track dating was carried out on zircon grains from pseudotachylyte associated with a Late Pleistocene landslide (Tsergo Ri landslide) in Langtang Himal, Nepal. Zircon grains were separated from an injection pipe of glassy and vesicular pseudotachylyte about 10 cm in diameter. The resulting age of 51±13 Ka lies between the two subpeaks (70 and 20 Ka) of the W{\"u}rm glacial period, and is concordant with the previous age estimate from geomorphological evidence (i.e. older than 25-30 Ka). This is the first reliable isotopic age for a landslide-generated pseudotachylyte excluding the possibility of contamination by an inherited age.",
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    AU - Arita, Kazunori

    AU - Danhara, Tohru

    AU - Iwano, Hideki

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