*Harisma Harisma¹, Hajime Naruse¹, Takafumi Hirata², Hisashi Asanuma² (1.Kyoto University, 2.The University of Tokyo)

*Tetsuo Kawakami¹, Sota Niki², Masayasu Suzuki¹, Shuhei Sakata³, Tatsuro ADACHI⁴, Fumiko Higashino¹, Masaoki Uno⁵, Takafumi Hirata² (1.Graduate School of Science, Kyoto University, 2.Geochemical Research Center, Graduate School of Science, The University of Tokyo, 3.Earthquake Research Institute, The University of Tokyo, 4.Advanced Asian Archaeological Research Center, Kyushu University, 5.Graduate School of Environmental Studies, Tohoku University)

*Kazuhiro Miyazaki¹, Takeshi Ikeda², Hideki Iwano^3,4, Takafumi Hirata⁴, Tohru Danhara³ (1.Institute of Geology and Geoinformation, Geological Survey of Japan/National Institute of Advanced Industrial Science and Technology, 2.Department of Earth and Planetary Sciences, Kyushu University, 3.Kyoto Fission-Track Co., Ltd, 4.Geochemical Research Center, the University of Tokyo)

*Sota Niki¹, Tetsuo Kawakami², Tatsuro Adachi³, Masaoki Uno⁴, Fumiko Higashino², Takafumi Hirata¹ (1.Geochemical Research Center, School of Science, The University of Tokyo, 2.Graduate School of Science, Kyoto University, 3.Faculty of Social and Cultural Studies, Kyushu University, 4.Graduate School of Environmental Studies, Tohoku University)

*Toshiki Haji¹, Takashi Kudo¹, Sota Niki², Takafumi Hirata² (1.Geological Survey of Japan, AIST, 2.Geochemical Research Center, The University of Tokyo)

*Hideki Iwano^1,2, Harutaka Sakai³, Tohru Danhara¹, Toru Nakajima^3,4, Takafumi Hirata² (1.Kyoto Fission-Track Co., Ltd., 2.Geochemical Research Center, The University of Tokyo, 3.Department of Earth and Planetary Science, Kyoto University, 4.Tono Geoscience Center, Japan Atomic Energy Agency)

*Tsuyoshi Komiya¹, Kota Namba¹, Yusuke Sawaki¹, Takafumi Hirata², Takayuki Ushikubo³, Kenji Shimizu³ (1.Department of Earth Science & Astronomy Graduate School of Arts and Sciences The University of Tokyo, 2.Geochemical Research Center, The University of Tokyo, 3.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology)

*Jumpei Yoshioka¹, Junichiro Kuroda², Kenji Matsuzaki², Sota Niki³, Takafumi Hirata³ (1.Department of Earth and Planetary Science, the University of Tokyo, 2.Atmosphere and Ocean Research Institute, the University of Tokyo, 3.Geochemical Research Center, the University of Tokyo)

*Aki Sakuma¹, Akihiro Kano¹, Yoshihiro Kakizaki², Hirokazu Kato¹, Sota Niki³, Takafumi Hirata³ (1.Department of Earth and Planetary Science, School of Science, the University of Tokyo, 2.Muroto Geopark Promotion Committee, 3.Geochemical Research Center, The University of Tokyo)

*Kenta Yoshida¹, Sota Niki², Hikaru Sawada¹, Ryosuke Oyanagi⁴, Takafumi Hirata², Kenji Asakura³, Takao Hirajima³ (1.Japan Agency for Marine-Earth Science and Technology, 2.Graduate School of Science, the University of Tokyo, 3.Department of Geology and Mineralogy, Kyoto University, 4.Kokushikan University)

*Masaki Nakazato¹, Hisashi Asanuma^1,2, Sota Niki¹, Hideki Iwano^1,3, Takafumi Hirata¹ (1.The University of Tokyo, Graduate School of Science, 2.The University of Tokyo, Atmosphere and Ocean Research Institute, 3.Kyoto Fission-Track Co.)

*Yuki Masuda¹, Sota Niki², Tetsuya Yokoyama¹, Takafumi Hirata² (1.Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2.Geochemical Research Center, Graduate School of Science, The University of Tokyo)