[ Top ] [ Japanese ]
NA13D Tephra
Abbr.: NA13D
- Type locality: Nobe river - Asahi river, Ojiya city, Niigata prefecture
- Tephra
- Pliocene
- Lithofacies: Dacite vitreous tuff
- NA13
- [ Upper ]
- --------------
- NA13A
- --------------
- NA13B
- --------------
- NA13C
- --------------
- NA13D
- --------------
- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Nobe river - Asahi 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.)