四国, 石鎚山第三系久万層群の凝灰岩のフィッション・トラック年代 [in Japanese] Fission-track age of tuffs from the Kuma Group, Shikoku, Japan [in Japanese]
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The Kuma Group, Shikoku, has been referred as Eocene deposits since Nagai (1956). Here we report new fission-track ages from the Kariba Sandstone-Mudstone Formation. Our data indicate that the group is of Early Miocene age.
- Journal of Mineralogical and Petrological Sciences
Journal of Mineralogical and Petrological Sciences 91(5), 196-200, 1996-05-05
Japan Association of Mineralogical Sciences