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Jurassic-Cretaceous boundary and Cretaceous formations in the Tosayamada-Birafu area, KochiPrefecture

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Takeshi Kozai 1, Keisuke Ishida 2 andYasuo Kondo 3



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1¡¥ÌÄÌ綵°éÂç³Ø¼«Á³·Ï¡ÊÍý²Ê¡Ë¶µ°é¹ÖºÂ
Faculty of Science Education, NarutoUniversity of Education, Tokushima 772-8502,Japan.E-mail: kozai@naruto-u.ac.jp
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Laboratory of Geology, Faculty of IntegratedArts and Sciences, Tokushima University,
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Department of Natural EnvironmentalScience, Kochi University, Kochi 780-8520,Japan.

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