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NG Tephra

Abbr.: NG

• Tephra
• Index tephra for Shimosueyoshi Formation
• Pleistocene (ca. 0.15 - 0.13 Ma)

• Lithofacies: Pumice bed

• Host: Banjin Sand

• Distribution: 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.)