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Nishidani Tephra
- Tephra
- Pleistocene (0.45 Ma, FT)
- Lithofacies: Volcanic ash
- Distribution: Nagamine, Awa city, Tokushima pref.
- Noda et al. (2021) Geology of the Ikeda District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 150p. (in Japanese with English abstract 5p.)