[S-MP33] Granites: Petrochronology, Processes and Crustal Growth

[SMP33-P03] Source characteristics of granitic rocks from San’yo and Ryoke belts in western part of SW Japan: Example for Iwakuni–Yanai region, Yamaguchi Prefecture, Japan

*Masaaki Owada¹, Yusaku Akimoto², Mariko Nagashima¹, Keisuke Eshima¹, Atsushi Kamei³, Nobuhiko Nakano⁴, Kenta Kawaguchi⁵, Yasuhito Osanai⁴ (1. Graduate School of Science and Engineering for Innovation, Yamaguchi University, 2. Yonden consultants co., Inc., 3. Department of Earth Science, Shimane University, 4. Faculty of Social and Cultural Studies, Kyushu University, 5. Graduate School of Advanced Science and Engineering, Hiroshima University)

Keywords:Mesozoic granitoids, Southwest Japan, Zircon U–Pb age and Hf isotope, Mafic source materia, Active continental margin