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Aobayama Formation (Yabe, 1921) Nakagawa et al., 1960
- Type locality: Yagiyama and Futatsuzawa, Taihaku ward, Sendai city, Miyagi prefecture
- Coherent formation
- middle Pleistocene
- Correlation: Matsuzaki Formation
- Sedimentary facies: Fluvial
- Sedimentary facies: Alluvial fan
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Yagiyama - Futatsuzawa, Taihaku ward, Sendai city, Miyagi pref.; Gongenmori - Doyabara, Aoba ward, Sendai city, Miyagi pref.
- Fossils (Pollen): Abies sp., Picea sp., Pinus sp.
- Miyamoto et al. (2013) Jour. Geol. Soc. Japan, vol.119, Supplement, pp.27-46 DOI
- Kitamura et al. (1986) Geology of the Sendai District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 134p. (in Japanese with English abstract 9p.)