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Furukawa Tuff Muramatsu, 1989

• Tephra
• Pleistocene (1.42 Ma, FT)

• Lithofacies: Tuff

• Host: Kajiyashiki Formation

• Distribution: Furukawa river, Itoigawa city, Niigata pref.

• Nagamori et al. (2018) Geology of the Itoigawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 75p. (in Japanese with English abstract 3p.)