R6: Plutonic rocks, volcanic rocks and subduction factory

[R6P-01] Temperatuer and pressure conditions of intrusive and emplacement processes of the Sakainokami plutonic body, Northeast Japan

[Presentation award entry]

*Satoshi Suzuki¹, Nobuo Asai¹, Kazuo Nakashima¹, Takashi Yuguchi¹ (1. Yamagata Uni.)

Keywords:Skainokami plutonic body, lithofacies, geothermometer, geobarometer

The Sakainokami plutonic body is igneous intrusion into the Mesozoic and Paleozoic sedimentary rocks of the Kitakami Mountains. In this study, the Sakainokami plutonic body is identified into five (mafic to felsic) lithofacies distribution based on spatial petrographical data. Temperature and pressure conditions of five lithofacies are investigated through the hornblende-plagioclase thermometer and Al-in-amphibole barometer.