2:30 PM - 2:45 PM
*Masaaki Miyahara1, Eiji Ohtani2, Masahiko Nishijima3, Ahmed El Goresy4 (1.Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University, 2.Department of Earth Sciences, Graduate School of Science, Tohoku University, 3.The electron microscopy center, Tohoku University, 4.Bayerisches Geoinstitut, Universität Bayreuth)