SKK Building, Katahira 2
Aoba-ku, Sendai, 980-8577
Japan
Tohoku University
Caldera eruption, rejuvenation, timescale, diffusion chronometry, Fe-Mg interdiffusion, Ti in quartz
pyrochlore, REE fluorocarbonate, apatite and calcite geochemistry, U-Pb zircon geochronology