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

Abbr.: Km

• Type locality: Kashimamyojin shrine, Gomoto, Teradomari, Nagaoka city, Niigata prefecture
• Tephra
• middle Miocene - early Pliocene (5.87 Ma, FT)

• Lithofacies: Volcanic ash

• Host: Shiiya Formation

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

• Distribution: Gomoto, Teradomari, Nagaoka city, Niigata pref.; Tazawa - Myohoji, Nishiyama town, Kashiwazaki city, Niigata pref.; Mishimadani, Nagaoka city, Niigata pref.; Sochi pass, Kashiwazaki 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.)