Allochthonous granitic bodies in the northern marginal area of the Kanto Mountains

Hideo Takagi, H. Fujimori

    研究成果: Chapter

    9 引用 (Scopus)

    抄録

    Geological and petrological studies were carried out on the granitic rocks in the Shimonita, Kanezawa and Yorii-Ogawa areas, northern margin of the Kanto Mountains. 1) The Late Cretaceous Namee granite intruding Jurassic Nanjai Formation is distributed to the north of the Okitano-Iwayama Line, correlative to the Median Tectonic Line, in the Shimonita area. It has been mylonitized with overprinted cataclasis. Based on the ore mineral composition and magnetic susceptibility, it shows ilmenite-series characteristics suggesting that it belongs to the Ryoke granite. 2) The Permian quartzdiorites in the above areas, have almost the same mineralogical and chemical composition and belong to the I-type. 3) The Early Cretaceous granitic rocks, the Yotsumatayama quartzdiorite and tonalites of the Yamagata body are characterized by presence of gneissosity, varying in modal content of hornblende andor biotite, and moderate Mg content of hornblende. They belong to the ilmenite-series and I-type granitic rock. -from English summary

    元の言語English
    ホスト出版物のタイトルJournal - Geological Society of Japan
    ページ663-685
    ページ数23
    95
    エディション9
    出版物ステータスPublished - 1989

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    ilmenite
    hornblende
    I-type rock
    granite
    Cretaceous
    mountain
    ore mineral
    magnetic susceptibility
    rock
    biotite
    Permian
    Jurassic
    chemical composition
    tectonics

    ASJC Scopus subject areas

    • Earth and Planetary Sciences(all)

    これを引用

    Takagi, H., & Fujimori, H. (1989). Allochthonous granitic bodies in the northern marginal area of the Kanto Mountains. : Journal - Geological Society of Japan (9 版, 巻 95, pp. 663-685)

    Allochthonous granitic bodies in the northern marginal area of the Kanto Mountains. / Takagi, Hideo; Fujimori, H.

    Journal - Geological Society of Japan. 巻 95 9. 編 1989. p. 663-685.

    研究成果: Chapter

    Takagi, H & Fujimori, H 1989, Allochthonous granitic bodies in the northern marginal area of the Kanto Mountains. : Journal - Geological Society of Japan. 9 Edn, 巻. 95, pp. 663-685.
    Takagi H, Fujimori H. Allochthonous granitic bodies in the northern marginal area of the Kanto Mountains. : Journal - Geological Society of Japan. 9 版 巻 95. 1989. p. 663-685
    Takagi, Hideo ; Fujimori, H. / Allochthonous granitic bodies in the northern marginal area of the Kanto Mountains. Journal - Geological Society of Japan. 巻 95 9. 版 1989. pp. 663-685
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    abstract = "Geological and petrological studies were carried out on the granitic rocks in the Shimonita, Kanezawa and Yorii-Ogawa areas, northern margin of the Kanto Mountains. 1) The Late Cretaceous Namee granite intruding Jurassic Nanjai Formation is distributed to the north of the Okitano-Iwayama Line, correlative to the Median Tectonic Line, in the Shimonita area. It has been mylonitized with overprinted cataclasis. Based on the ore mineral composition and magnetic susceptibility, it shows ilmenite-series characteristics suggesting that it belongs to the Ryoke granite. 2) The Permian quartzdiorites in the above areas, have almost the same mineralogical and chemical composition and belong to the I-type. 3) The Early Cretaceous granitic rocks, the Yotsumatayama quartzdiorite and tonalites of the Yamagata body are characterized by presence of gneissosity, varying in modal content of hornblende andor biotite, and moderate Mg content of hornblende. They belong to the ilmenite-series and I-type granitic rock. -from English summary",
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    N2 - Geological and petrological studies were carried out on the granitic rocks in the Shimonita, Kanezawa and Yorii-Ogawa areas, northern margin of the Kanto Mountains. 1) The Late Cretaceous Namee granite intruding Jurassic Nanjai Formation is distributed to the north of the Okitano-Iwayama Line, correlative to the Median Tectonic Line, in the Shimonita area. It has been mylonitized with overprinted cataclasis. Based on the ore mineral composition and magnetic susceptibility, it shows ilmenite-series characteristics suggesting that it belongs to the Ryoke granite. 2) The Permian quartzdiorites in the above areas, have almost the same mineralogical and chemical composition and belong to the I-type. 3) The Early Cretaceous granitic rocks, the Yotsumatayama quartzdiorite and tonalites of the Yamagata body are characterized by presence of gneissosity, varying in modal content of hornblende andor biotite, and moderate Mg content of hornblende. They belong to the ilmenite-series and I-type granitic rock. -from English summary

    AB - Geological and petrological studies were carried out on the granitic rocks in the Shimonita, Kanezawa and Yorii-Ogawa areas, northern margin of the Kanto Mountains. 1) The Late Cretaceous Namee granite intruding Jurassic Nanjai Formation is distributed to the north of the Okitano-Iwayama Line, correlative to the Median Tectonic Line, in the Shimonita area. It has been mylonitized with overprinted cataclasis. Based on the ore mineral composition and magnetic susceptibility, it shows ilmenite-series characteristics suggesting that it belongs to the Ryoke granite. 2) The Permian quartzdiorites in the above areas, have almost the same mineralogical and chemical composition and belong to the I-type. 3) The Early Cretaceous granitic rocks, the Yotsumatayama quartzdiorite and tonalites of the Yamagata body are characterized by presence of gneissosity, varying in modal content of hornblende andor biotite, and moderate Mg content of hornblende. They belong to the ilmenite-series and I-type granitic rock. -from English summary

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