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Onzawa Facies
- Coherent formation
- First Seto Inland Sea
- Sedimentary basin in island arc
- Miocene
- Sedimentary facies: Basal marginal facis
- Lithofacies: Coarse clastics
- Upper limit: Conformity
- Lower limit: Conformity
- Arakida Formation
- [ Upper ]
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- Upper Member
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- Lower Member
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- Onzawa Facies
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- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Tenryu river, Anan city, Nagano pref.
- Sako and Hoshi (2014) Jour. Geol. Soc. Japan, vol.120, no.8, pp.255-271 DOI