U-Pb zircon age and Sr and Nd isotope compositions of the Haki body of the Ochiai Granodiorite (Haki Granodiorite), northern Kyushu, Southwest Japan

DOI Web Site
  • YUHARA Masaki
    Department of Earth System Science, Faculty of Science, Fukuoka University Kyushu Branch of the Association for the Geological Collaboration in Japan
  • KAMEI Atsushi
    Department of Earth Science, Interdisciplinary Faculty of Science and Engineering
  • KAWANO Yoshinobu
    Department of Environment Systems, Faculty of Geo-environmental Science, Rissho University
  • OKANO Osamu
    Department of Earth Sciences, Faculty of Science, Okayama University
  • HAYASAKA Yasutaka
    Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University San-yo Branch of the Association for the Geological Collaboration in Japan
  • KAGAMI Hiroo
    Omachi

Bibliographic Information

Other Title
  • 北部九州白亜紀花崗岩類，落合花崗閃緑岩杷木岩体（杷木花崗閃緑岩）の U-Pb ジルコン年代とSr・Nd 同位体比組成
  • ホクブ キュウシュウ ハクアキ カコウガンルイ,オチアイ ハナオカセンリョクガンハモクガンタイ(ハモク ハナオカセンリョクガン)ノ U-Pb ジルコン ネンダイ ト Sr ・ Nd ドウイタイヒ ソセイ

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Abstract

<p>Major and trace elements analysis, U-Pb zircon dating, rare earth elements (REE) analysis and SrNd isotope analysis were conducted on samples from the Haki Granodiorite in the eastern part of northern Kyushu, Southwest Japan. This granodiorite is composed mainly of porphyritic medium-grained hornblende - biotite granodiorite, and divided into two facies: main facies and hornblende porphyritic facies. U-Pb zircon age of 106.64 ± 0.82 Ma is obtained from the main facies of this granodiorite. This age similar to that of the Ochiai Granodiorite. Major and trace elements, REE and Sr-Nd isotopic compositions of this granodiorite also similar to those of the Ochiai Granodiorite. Thus, the source magma of the Haki Granodiorite is the same as that of the Ochiai Granodiorite.</p>

Journal

  • Earth Science (Chikyu Kagaku)

    Earth Science (Chikyu Kagaku) 74 (3), 83-98, 2020-07-25

    The Association for the Geological Collaboration in Japan

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