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Koisewan Formation Akamine, 1962
- Coherent formation
- Shimosueyoshi transgressive deposit
- Pleistocene (Shimosueyoshi stage)
- Correlation: lower Atsuta Formation
- Sedimentary facies: Marine
- Sedimentary facies: Inner bays
- Lithofacies: Clay
- Lithofacies (Minor): Sands
- Hokuse seashore, Mie pref.
- [ Upper ]
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- Isekambe Formation
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- Koisewan Formation
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- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Yoshida et al. (1991) Geology of the Kuwana District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 154p. (in Japanese with English abstract 5p.)
- Yoshida (1984) Geology of the Yokkaichi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 81p. (in Japanese with English abstract 5p.)