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Kitadani Formation
- Coherent formation
- Yuasa - Aridagawa basin
- Cretaceous
- Correlation: Yuasa Formation
- Sedimentary facies: Marine
- Lithofacies (Upper): Shale
- Lithofacies (Upper, Minor): Sandstone
- Lithofacies (Lower): Sandstone
- Lithofacies (Lower, Minor): Conglomerate
- Thickness: 150 m or thicker
- Thickness (Upper): ca. 120 m
- Thickness (Lower): ca. 30 m
- Upper limit: Conformity (Arida Formation)
- Ryoseki Group (southern Yuasa, Wakayama pref.)
- [ Upper ]
- --------------
- Kitadani Formation
- ?--?--?--?--?-
- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Kitadani, Hirokawa city, Arida county, Wakayama pref.
- Fossils (Shellfishes): Cerithum (Circocerithum) aff. reticulatum, Exogyra sp.
- Hirayama and Tanaka (1956) Kainan, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 62p. (in Japanese with English abstract 12p.)