Abstract: Tectonic setting leading to subduction initiation of Izu-Bonin-Mariana arc – new implications from the Philippine Sea basins- (AGU Fall Meeting 2018)

Tectonic setting leading to subduction initiation of Izu-Bonin-Mariana arc – new implications from the Philippine Sea basins-

Osamu Ishizuka^1,2, Kenichiro Tani³, Yumiko Harigane⁴, Gen Shimoda⁵, Taichi Sato⁶, Susumu Umino⁷, Izumi Sakamoto⁸, Yasuhiko Ohara¹, Yuka Yokoyama⁸, Americus de Chavez Perez⁹, Chris Conway¹⁰ and Shun Sekimoto¹¹, (1)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, (2)National Institute of Advanced Industrial Science and Technology, Ibaraki, Japan, (3)National Museum of Nature and Science, Department of Geology and Paleontology, Ibaraki, Japan, (4)Geological Survey of Japan, Tsukuba, Japan, (5)Sangyo Gijutsu Sogo Ken, Tsukuba, Japan, (6)AIST, Ibaraki, Japan, (7)Kanazawa University, Kanazawa, Japan, (8)Tokai University, Tokyo, Japan, (9)Guangzhou Institute of geochemistry, Guangzhou, China, (10)National Museum of Nature and Science, Ibaraki, Japan, (11)Kyoto University, Institute for Integrated Radiation and Nuclear Science, Osaka, Japan

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