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Higaidani Formation
- Coherent formation
- Izumi sedimentary basin
- Forearc basin associated with strike-slip fault related to Median Tectonic Line
- Late Cretaceous
- upper Higaidani Formation
- [ Upper ]
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- Osaka Formation
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- Oyamahata Formation
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- Miyagatani Formation
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- Izumitani Formation
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- Kawamata Formation
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- Gosho Formation
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- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Tokushima pref.
- Noda et al. (2017) Geology of the Kan-onji District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 96p. (in Japanese with English abstract 4p.)
- Kikuchi and Kotake (2013) Jour. Geol. Soc. Japan, vol.119, no.9, pp.613-629 DOI