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Urado Formation
- Sedimentary facies: Marine
- Sedimentary facies (Upper): Delta
- Sedimentary facies (Lower): Drowned valley overlain by Inner bay or Delta
- Depth of water: Shallow marine
- Lithofacies (Upper): Mud
- Lithofacies (Upper, Minor): Sands
- Lithofacies (Lower): Mud, Sands
- Thickness: 10 - 38 m
- The boundary between the upper part and the lower part: Bottom of K-Ah
- Lower limit: Unconformity (Kawauchi Formation)
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Kochi plain, Kochi pref.
- Tephra: K-Ah
- Kawamura and Nishiyama (2019) Jour. Geol. Soc. Japan, vol.125, no.1, pp.87-105 DOI