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Komeyama Tuff Yoshikawa City History Compilation Room, 1996

• Tephra
• Miocene - Pliocene (4.9 Ma, FT)

• Lithofacies: Pumice tuff, Tuff
• Sedimentary structures: Graded structure

• Host: Takegahana Formation
• Thickness: ca. 15 m

• Distribution: 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.)