Data for: Identification of the source caldera for a Pliocene ash-flow tuff in Northeast Japan based on apatite trace-element compositions and zircon U–Pb ages

Appendix A. Heavy mineral occurrences and abundances of the studied samples Appendix B. Major and trace element compositions of apatite in the studied tuffs analyzed using a wavelength dispersive electron probe (JEOL 8530F). Each measurement was performed on a different crystal grain. Appendix C. Major element compositions of ilumenite in the studied tuffs analyzed using a wavelength dispersive electron probe (JEOL 8530F). Each measurement was performed on a different crystal grain. Appendix D. Summary of LA ICP-MS U–Pb results for zircon from the studied tuffs. Each measurement was performed on a different crystal grain.