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Iwamuro II Tephra (Yokoyama et al., 1968) Kawabe, 1981

• Type locality: Iwamuro, Koka city, Shiga prefecture
• Tephra
• Pliocene

• Lithofacies: Vitreous volcanic ash

• Thickness: 3 - 5 cm
• Host: Sajigawa Member, Sayama Member, Kaigake Member

• Distribution: Iwamuro - Yasugawa river, 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.)
• Miyamura et al. (1981) Geology of the Kameyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 128p. (in Japanese with English abstract 9p.)