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*Yoshihiro Nakamura
Graduate School of Science & Technology, Niigata University
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Tsuyoshi Toyoshima
Department of Geology, Facility of Science, Niigata University
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Satish Kumar Madhusoodhan
Department of Geology, Facility of Science, Niigata University
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Junji Akai
Department of Geology, Facility of Science, Niigata University