Radiometric ages of the volcanic rocks of the Late Cenozoic in Southern Kyushu, Japan

Abstract

Fission-track dating was carried out on six volcanic materials (one tuff layer, two rhyolitic lavas and three pyroclastic flow deposits) in Southern Kyushu by GBGRE method (YOKOYAMA, 1983). They are as follows; [table] These radiometric ages do not contradict the stratigraphical evidence shown in Fig. 3 and 13.