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

11:45 AM - 12:00 PM JST(2:45 AM - 3:00 AM UTC)

[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.