14:00 〜 14:15 [MIS08-14] High-pressure metamorphism and mantle metasomatism in the Mariana convergent margin: Petrology of mafic and ultramafic clasts recovered from IODP Exp. 366 *市山 祐司1、道林 克禎2、Fryer Patricia3 (1.千葉大学、2.静岡大学、3.ハワイ大学)