Cosmogenic nuclide dating to determine timings of huge tsunami using tsunami boulders derived from a dike of quartz porphyry in Hashigui-iwa facing the Nankai Trough, Pacific side of central Japan


Hideaki Maemoku1, Masanobu Shishikura2, Tomoo Echigo3, Yuichi Namegaya2, Yusuke Yokoyama4 and Yosuke Miyairi5, (1)Hosei University, Chiyoda, Japan, (2)Geological Survey of Japan, AIST, Tsukuba, Japan, (3)Geo-Research Institute, Osaka, Japan, (4)The University of Tokyo, Atmosphere and Ocean Research Institute (AORI), Kashiwa, Japan, (5)AORI, The University of Tokyo, Kashiwa-Shi, Chiba, Japan