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Bandodani Formation Yamasaki, 1986
- Type locality: Shimada-jima island, Seto village, Naruto city, Tokushima prefecture
- Coherent formation
- Izumi sedimentary basin
- Forearc basin associated with strike-slip fault related to Median Tectonic Line
- Late Cretaceous, Campanian
- Contemporaneous heterotopic facies (partly): Seidan Formation, Anaga Formation
- Sedimentary facies: Frontal splay of the submarine fan
- Sedimentary facies: Submarine debris flow, Channel, Distributary channel, Inter-channel
- Lithofacies: Sandstone-dominant interbedded sandstone and mudstone
- Lithofacies (Minor): Gravel-bearing sandstone, Conglomerate, Gravel-bearing mudstone
- Thickness: 6,000 m or thicker
- Upper limit: Conformity
- Lower limit: Conformity
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Omoizaki - Koshimada - Senokatanohana - Koike - Shimamukai - Tanoura - Musa - Awai, Shimada-jima island, Seto village, Naruto city, Tokushima pref.; Takashima island - Ogejima island, Tokushima pref.; Bandodani river, Oasa village, Naruto city, Tokushima pref.
- Fossils (Ammonoids): Pravitoceras sigmoidale, Didymoceras awajiense
- Fossils (Trace fossils): Archaeozostera isp., Ophiomorpha rudis, Zoophycos isp.
- 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