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Ot4 Tephra

Abbr.: Ot4

• Type locality: Miyata, Tsubata city, Kahoku county, Ishikawa prefecture
• Tephra
• Miocene

• Lithofacies: Tuffaceous sandstone, Tuffaceous siltstone

• Thickness: ca. 10 m
• Host: Otogawa Formation

• Distribution: Miyata, Tsubata city, Kahoku county, Ishikawa pref.

• Sumi et al. (1989) Geology of the Isurugi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 118p. (in Japanese with English abstract 5p.)