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Hkp Tephra Kobayashi et al., 1995

Abbr.: Hkp

• Type locality: Tsukanoyama - Hakamasawa river, Koshiji, Nagaoka city, Niigata prefecture
• Tephra
• Pleistocene

• Lithofacies: Pumiceous volcanic ash

• Host: Uonuma Formation
• Thickness: ca. 100 cm

• Distribution: Tsukanoyama - Hakamasawa river, Koshiji, 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.)