Tephrostratigraphy of the Pliocene to Middle Pleistocene Series in Honshu and Kyushu Islands, Japan 論文 Yasufumi Satoguchi・Yoshitaka Nagahashi ·2012-06-26 ·『Island Arc』 21(3) pp. 149-169 doi:10.1111/j.1440-1738.2012.00816.x