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Ot3 Unit
Invalid synonym: Otsu Formation
- Coherent formation
- southern Yezo Forearc basin (Jobanoki basin)
- middle Miocene
- Sedimentary facies: Marine
- Sedimentary facies: Shelf - Upper continental slope
- Sedimentary facies: Submarine channel-fill deposit, Submarine slump scar-fill deposit
- Lithofacies: Diatomaceous mudstone, Sandstone
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Otsu village, Kitaibaraki city, Ibaraki pref.
- Tephra: Izura Tephra (Izura Tuff Bed, Ishibata? Tuff Bed, Ayukawa Tuff Bed)
- Ando et al. (2011) Jour. Geol. Soc. Japan, vol.117, Supplement, pp.49-67 DOI