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Sako Tephra Mizuno, 1992

• Type locality: Sako, Awaji city, Hyogo prefecture
• Tephra
• Pleistocene
• Correlation: Habutaki II, Asano 1

• Lithofacies: Vitreous volcanic ash

• Host: Aihara Member
• Thickness: 10 - 120 cm

• Distribution: Shizuki - Nakada - Sako, Awaji city, Hyogo pref.; Tsushi - Kamisakai - Aiga town - Nakakawara town, Sumoto city, Hyogo pref.

• Takahashi et al. (1992) Geology of the Sumoto District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 107p. (in Japanese with English abstract 5p.)