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Kz Tephra Kobayashi and Abe, 1981

Abbr.: Kz

• Type locality: Katsurazawa, Izumozaki city, Santo county, Niigata prefecture
• Tephra
• middle Pleistocene

• Lithofacies: Volcanic ash
• Sedimentary structures: Parallel lamination, Cross lamination

• Host: Uonuma Formation

• Distribution: Katsurazawa, Izumozaki city, Santo county, Niigata pref.

• Kobayashi et al. (1993) Geology of the Izumozaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 91p. (in Japanese with English abstract 4p.)