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Takami MIYAMOTO
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Ryozo TOMINAGA
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Kenshi SONODA
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Akira HASE
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Author's Organization:Institute of Geology and Mineralogy, Faculty of Science, Hiroshima University Institute of Geology and Mineralogy, Faculty of Science, Hiroshima University Institute of Geology and Mineralogy, Faculty of Science, Hiroshima University Institute of Geology and Mineralogy, Faculty of Science, Hiroshima University