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Shindachi Formation
- Type locality: Kinyuji river, Shindachi, Sennan city, Osaka prefecture
- Coherent formation
- Izumi sedimentary basin
- Forearc basin associated with strike-slip fault related to Median Tectonic Line
- Late Cretaceous, Maastrichtian (72.1 Ma, FT)
- Sedimentary facies: Main filling of the sedimentary basin
- Lithofacies: Turbidite
- Lithofacies (Upper): Interbedded sandstone and mudstone
- Lithofacies (Lower): Interbedded conglomerate, sandstone and mudstone
- Sedimentary structures (Upper): Slump structures
- Sedimentary structures (Lower): Parallel stratification, Sole marks
- Thickness: ca. 1,700 - 6,900 m
- Shindachi Formation
- [ Upper ]
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- Upper Member (S6 - S9)
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- Lower Member (S1 - S5)
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- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Kinyuji river, Shindachi, Sennan city, Osaka pref.; Kuwahata, Hannan city, Osaka pref.; Mount Unzanpo, Wakayama city, Wakayama pref.
- Tephra: t10, t12 (72.1 Ma, FT)
- Miyata et al. (2012) Jour. Geol. Soc. Japan, vol.118, Supplement, pp.37-52 DOI
- Miyata et al. (1993) Geology of the Wakayama and Ozaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 68p. (in Japanese with English abstract 4p.)