The effect of secondary apatite on the initial 87Sr/86Sr ratio determination in granitic rocks: a case study of the Tadamigawa pluton, northeastern Japan

Yuki Wakasugi1, Koki Ichino1, Yudai Tanioka1, Shigeyuki Wakaki2, Motohiro Tsuboi1 and Tsuyoshi Ishikawa2, (1)Kwansei Gakuin University, Hyogo, Japan, (2)JAMSTEC, Nankoku, Kochi, Japan