R6: Plutonic rocks, volcanic rocks and subduction factory

[R6P-04] Petrochmistry of the Sakainokami plutonic body in Kitakami Mountains, Northeasthern Japan:Crystallization differentiation deduced from application for the geothrmometer-geobarometer

*Satoshi Suzuki¹, Kazuo Nakashima², Takashi Yuguchi² (1. Yamagata Uni. Sci., 2. Yamagata Uni., Sci.)

Keywords:Sakainokami plutonic body, Geothrmometer, Geobarometer, Crystallization differentiation

This study reveals the formation process of the Sakainokami plutonic body in the Kitakami Mountains, Northeastern Japan, which are deduced from petrography and chemistry that four lithfacies in the pluton. in particular, the estimation of temperature and pressure conditions in four lithfacies are presented through mineral chemistry using the geothermometer and geobarometer.