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Naka Tephra

• Tephra
• Pleistocene

• Lithofacies: Vitreous volcanic ash

• Thickness: 35 - 45 cm
• Host: Nakazaiji Alternation Member

• Distribution: Sakuragawa river, Rengeji, Hino city, Gamo county, Shiga pref.

• Ishida et al. (1984) Geology of the Hikone-Seibu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 121p. (in Japanese with English abstract 6p.)