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Tanaka Formation

• Coherent formation
• early - late Pleistocene
• Correlation (Upper): Terrace Deposits
• Correlation (Lower): Lower part - Upper part of Osaka Group

• Sedimentary facies: Marine, Fluvial, Lacustrine
• Lithofacies: Interbedded marine clay beds and freshwater sand-gravel to sand beds

• Upper limit: Unconformity (Namba Formation)
• Lower limit: Bottom of Ma -1
• Lower limit: Conformity (Miyakojima Formation)

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Underground of Osaka plain

• Hongo (2009) Jour. Geol. Soc. Japan, vol.115, no.2, pp.64-79 DOI