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

Hideo Takagi, H. Fujimori

    Research output: Chapter in Book/Report/Conference proceedingChapter

    9 Citations (Scopus)

    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

    Original languageEnglish
    Title of host publicationJournal - Geological Society of Japan
    Pages663-685
    Number of pages23
    Volume95
    Edition9
    Publication statusPublished - 1989

    Fingerprint

    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)

    Cite this

    Takagi, H., & Fujimori, H. (1989). Allochthonous granitic bodies in the northern marginal area of the Kanto Mountains. In Journal - Geological Society of Japan (9 ed., Vol. 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. Vol. 95 9. ed. 1989. p. 663-685.

    Research output: Chapter in Book/Report/Conference proceedingChapter

    Takagi, H & Fujimori, H 1989, Allochthonous granitic bodies in the northern marginal area of the Kanto Mountains. in Journal - Geological Society of Japan. 9 edn, vol. 95, pp. 663-685.
    Takagi H, Fujimori H. Allochthonous granitic bodies in the northern marginal area of the Kanto Mountains. In Journal - Geological Society of Japan. 9 ed. Vol. 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. Vol. 95 9. ed. 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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