*Yuji Ishii^1,2, Toru Tamura², Ben Bunnarin³ (1.Research Fellow of the Japan Society for the Promotion of Science, 2.Geological Survey of Japan, AIST, 3.Department of Geology, GDMR, MIME, Cambodia)

*Toru Tamura^1,4, Hiroko Okazaki², Hiroomi Nakazato³, Tomonori Naya¹, Rei Nakashima¹ (1.Institute of Geology and Geoinformation Geological Survey of Japan, AIST, 2.Natural Hisory Museum and Institute, Chiba, 3.The National Agriculture and Food Research Organization, 4.Graduate School of Frontier Sciences, The University of Tokyo)

*Kazumi Ito¹, Toru Tamura¹ (1.Geological Survey of Japan, AIST)

*Lei Gao¹, Hao Long¹, Toru Tamura² (1.Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 2.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology)

Risako Kida¹, *Toru Tamura², Seiji Kadowaki¹ (1.Nagoya University Museum, Nagoya University, 2.Institute of Geology and Geoinformation Geological Survey of Japan, AIST)

*Atsuko Amano¹, Toru Tamura¹, Yoshiki Sato¹, Takashi OGAMI¹, Tomoyuki Sato¹ (1.National institute of Advanced Industrial Science and Technology)

*Hiroko Okazaki¹, Hiroomi Nakazato², Toru Tamura³, Kazumi Ito³, Masakazu Nara⁴ (1.Division of Earth Science, Natural History and Institute, Chiba, 2.Institute for Rural Engineering, NARO, 3.Institute of Geology and Geoinformation Geological Survey of Japan, AIST, 4.Sciences Unit, Natural Sciences Cluster, Research and Education Faculty, Kochi University)