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Oi Formation

• Coherent formation
• Miocene sediments related to the paleo Setouchi inner sea
• early Miocene
• Correlation: Chikusa Formation

• Sedimentary facies: Marine
• Water temperature (Upper): Subtropical (Foraminifera)
• Depth of water (Upper): Upper bathyal (Shellfishes)

• Upper limit: Conformity (Katada Formation)
• Lower limit: Conformity (Haze Formation)

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

• Distribution: Mitsugano, Hakusan town, Tsu city, Mie pref.

• Oshida et al. (2018) Jour. Geol. Soc. Japan, vol.124, no.11, pp.919-933 DOI