Zircon U–Pb ages and whole–rock geochemistry from the Hida granites: implications for the geotectonic history and the origin of Mesozoic granites in the Hida belt, Japan

The Hida granites, classified into the pre–Jurassic and Jurassic plutons in this study, are important components of belt, which is a Paleozoic–Mesozoic basement Japan arc underwent Permian to Triassic metamorphism during collision between North South China blocks. This study performed zircon U–Pb dating whole–rock geochemical analyses for granites from major plutonic bodies reveal geotectonic history origin belt. Obtained 238U–206Pb weighted mean ages exhibit 239.1–238.3 Ma Katakaigawa body (augen granite) 200.5–180.9 other (non–deformed granitoids), these can be correlated plutons, respectively. Geochronological results suggest that mylonitization forming augen occurred its intrusion indicate distributed widely Sea side Meanwhile, characteristics trace element compositions seem difficult distinguished geochemically both them adakitic non–adakitic generated subduction zone.