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Kokozura Formation
Kokozura Formation had been considered as a member of Taga Group.
- Coherent formation
- southern Yezo Forearc basin (Jobanoki basin)
- early Miocene
- Sedimentary facies: Marine
- Lithofacies: Sandstone
- Takaku Group
- [ Upper ]
- ?--?--?--?--?-
- Kokozura Formation
- ?--?--?--?--?-
- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Oizura, Izura, Otsu village, Kitaibaraki city, Ibaraki pref.
- Fossils: Shellfishes, Diatoms, Tube trace fossils
- Fossils (Foraminifera): Lagena globosa, Lagena striata, Nodosaria insecta, Robulus limbosus
- Ando et al. (2011) Jour. Geol. Soc. Japan, vol.117, Supplement, pp.49-67 DOI
- Iwao and Matsui (1961) Taira and Kawamae, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 103p. (in Japanese with English abstract 17p.)