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Okubo I Tephra Kawabe, 1981

• Tephra
• Pliocene

• Lithofacies: Vitreous volcanic ash

• Thickness: 0.5 - 1 cm
• Host: Konan Member

• Distribution: Okubo, 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.)