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Tentokuji facies
- Coherent formation
- late Pliocene
- Sedimentary facies: Marine
- Lithofacies: Siltstone
- Lithofacies (Minor): Acidic tuff
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Akita pref.
- Fossils (Foraminifera): Angulogerina hughesi, Angulogerina kokozuraensis, Bolivina decussata, Bulimina striata, Bulimina tenuata, Cassidulina norcrossi, Epistominella naraensis, Epistominella nipponica, Epistominella pulchella, Frondicularia sp., Globigerina sp., Globobulimina sp., Hanzawaia nipponica, Lenticulina sp., Loxostomoides bradyi, Milliammina sp., Pullenia apertula, Sphaeroidina bulloides
- Huzioka et al. (1977) Geology of the Akita District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 69p. (in Japanese with English abstract 5p.)
- Ozawa et al. (1977) Geology of the Honjo District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 54p. (in Japanese with English abstract 4p.)