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

鹿島 愛彦; 武智 賢樹

doi:10.2465/ganko.91.196

JOURNAL OF MINERALOGY, PETROLOGY AND ECONOMIC GEOLOGY

Online ISSN : 1881-3275
Print ISSN : 0914-9783
ISSN-L : 0914-9783

SHORT NOTE

Fission-track age of tuffs from the Kuma Group, Shikoku, Japan

Naruhiko KASHIMA, Kenji TAKECHI

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Keywords: Fission-track age, Early Miocene, Tuff, Kuma Group, Shikoku.

JOURNAL FREE ACCESS

1996 Volume 91 Issue 5 Pages 196-200

DOI https://doi.org/10.2465/ganko.91.196

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Abstract

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.

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