convener:Shin Toyoda(Department of Applied Physics, Faculty of Science, Okayama University of Science), convener:Toru Tamura(Institute of Geology and Geoinformation Geological Survey of Japan, AIST), Yorinao Shitaoka(Department of Environment System, Faculty of Geo-environmental Science, Rissho University), Chairperson:Yorinao Shitaoka(Department of Environment System, Faculty of Geo-environmental Science, Rissho University), Shin Toyoda(Institute of Paleontology and Geochronology, Okayama University of Science), Toru Tamura(Institute of Geology and Geoinformation Geological Survey of Japan, AIST)