2022 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)

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Oral presentation

S1/R6 Joint session: Earth materials science related to igneous processes/Plutonic rocks, volcanic rocks and subduction factory

Sun. Sep 18, 2022 9:00 AM - 12:15 PM B351 (Adv. Edu. Res. Bldg. E-3F)

Chairperson: Atsushi Kamei(Shimane Univ.), Tatsuhiko Kawamoto(Shizuoka Univ.), Morihisa Hamada(JAMSTEC), Masao Banno(Yamagata Univ.)

11:45 AM - 12:00 PM

[S1R6-11] Mineral and whole-rock chemical composition of felsic rocks distribute on Kajishima, Ehime Prefecture, Southwest Japan.

[Presentation award entry]

*Kazuya Shimooka1, Yasuhiro Ogita2, Satoshi Saito1 (1. Ehime Univ., 2. JAEA)

Keywords:Cretaceous felsic rocks, Kajishima, Southwest Japan, Mineral and whole-rock chemical composition

We discovered a new poikilitic texture in the felsic rocks of Kajishima, Shisakajima, northeastern Ehime Prefecture, Japan. In this presentation, we carried out chemical compositions of the poikilitic texture, and whole-rock chemical compositions of the felsic rocks. Based on the results, we discussed the formation process of felsic rocks distribute on Kajishima.