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Nagano Formation
- Coherent formation
- middle Carboniferous (Fuzulinids)
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Nojiri - Isetoge pass, Ono city, Fukui pref.
- Fossils: Fuzulinids
- Tsukada et al. (2004) Jour. Geol. Soc. Japan, vol.110, no.10, pp.640-658 DOI