Peridotites outcropped in the southern Mariana Trench

Shoma Oya1, Katsuyoshi Michibayashi1, Yasuhiko Ohara2 and Teruaki Ishii3, (1)Shizuoka University, Shizuoka, Japan, (2)Hydrographic and Oceanographic Department of Japan, Tokyo, Japan, (3)Fukuda Geological Institute, Tokyo, Japan