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Znp Tephra (Suzuki et al., 1974) Kurokawa et al., 1987

Abbr.: Znp

• Type locality: Zenkyuin temple, Izumozaki city, Santo county, Niigata prefecture
• Tephra
• Pliocene - Pleistocene (4.69 Ma, FT)

• Lithofacies (Top): Volcanic ash
• Lithofacies (Upper): Vitreous part
• Lithofacies (Middle): Pumiceous part
• Lithofacies (Lower): Glavery part

• Thickness: ca. 6 m
• Thickness (Top): 20 cm
• Thickness (Upper): 235 cm
• Thickness (Middle): 290 cm
• Thickness (Lower): 85 cm
• Host: Nishiyama Formation

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Zenkyuin temple - Haguro town, Izumozaki city, Santo county, Niigata pref.; Yamada - Shido bridge, Teradomari, Nagaoka city, Niigata pref.

• Kobayashi et al. (2002) Geology of the Sanjo District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 98p. (in Japanese with English abstract 4p.)
• Kobayashi et al. (1995) Geology of the Kashiwazaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 102p. (in Japanese with English abstract 4p.)
• 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.)