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Ch-b (Miyata et al., 1988) Hasegawa et al., 2009
Abbr.: Ch-b
- Type locality: Izumikawa, Betsukai city, Notsuke county, Hokkaido
- Tephra
- Pleistocene
- Correlation: NaP
- Lithofacies: Pumice, Scoria
- Ch-b
- [ Upper ]
- ~~~~~~~~~~~~~~
- Ch-b1
- ~~~~~~~~~~~~~~
- Ch-b2
- ~~~~~~~~~~~~~~
- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Izumikawa, Betsukai city, Notsuke county, Hokkaido
- Hasegawa et al. (2009) Jour. Geol. Soc. Japan, vol.115, no.8, pp.369-390 DOI