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Se Tephra Yasui et al., 1983

Abbr.: Se

• Type locality: Ozumisenbon town, Nagaoka city, Niigata prefecture
• Tephra
• early Pleistocene

• Lithofacies: Pumice-bearing volcanic ash, Pumice

• Host: Haizume Formation
• Thickness: ca. 2 m

• Distribution: Ozumisenbon town, Nagaoka city, Niigata pref.

• 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.)