*Ginga Kitahara¹, Akira Yoshiasa¹, Makoto Tokuda¹, Tsubasa Tobase¹, Hidetomo Hongu¹, Hiroshi Arima², Kazumasa Sugiyama² (1.Kumamoto University, 2.Tohoku University)

*Koyumi Yamashita¹, Akira Yoshiasa ², Makoto Tokuda ², Tsubasa Tobase², Haruna Miyazaki, Tadao Nishiyama², Kazumasa Sugiyama³, Ritsuro Miyawaki⁴, Seiichiro Uehara¹ (1.Kyushu University, 2.Kumamoto University, 3.Tohoku University, 4.National Museum of Nature and Science)

*Akira Miyake¹, Yohei Igami¹, Chang Yuhchyuan¹, Norimasa Shimobayashi¹, Kenji Tsuda², Yuichiro Hayasaka³ (1.Department of Geology and Mineralogy, Graduate School of Science, Kyoto University, 2.FRIS, Tohoku University, 3.The Electron Microscopy Center, Tohoku University)

*Yohei Shirose¹, Seiichiro Uehara² (1.The Kyoto University Museum, Kyoto University, 2.Department of Earth and Planetary Sciences, Graduate School of Sciences, Kyushu University)

*Kenichiro Tani¹, Yukiyasu Tsutsumi¹ (1.Department of Geology and Paleontology, National Museum of Nature and Science)

*Hiroki Sato¹, Umeda Koji¹, Nobutaka Tsuchiya² (1.Hirosaki Univ., 2.iwate Univ.)