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Hijirigahana Tuff

• Tephra
• Miocene - Pliocene (4.6, 4.5 Ma, FT)

• Lithofacies: Pumice tuff
• Lithofacies (Upper): Tuff

• Host: Takegahana Formation
• Thickness: ca. 4 m
• Thickness (Upper): ca. 3 m

• Distribution: Harai river - Yoneyama river - Hijirigahana, Kashiwazaki city, Niigata pref.; Manzo river, Joetsu city, Niigata pref.

• Takeuchi et al. (1996) Geology of the Kakizaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 48p. (in Japanese with English abstract 5p.)