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Sunasaka Tephra Yokoyama et al., 1979

• Tephra
• Pliocene

• Lithofacies: Vitreous volcanic ash

• Thickness: 6 - 8 cm
• Host: Sajigawa Member

• Distribution: Sunasaka, Koka city, Shiga pref.

• Nakano et al. (2003) Geology of the Minakuchi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 83p. (in Japanese with English abstract 3p.)