[ Top ] [ Japanese ]
NA39 Tephra
Abbr.: NA39
- Type locality: Niigata prefecture
- Tephra
- Pliocene
- Lithofacies: Scoria tuff (2 units)
- Distribution: Nobe river, Ojiya city, Niigata pref.
- Yanagisawa et al. (1986) Geology of the Ojiya District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 177p. (in Japanese with English abstract 6p.)