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Makibuchi Formation
- Sedimentary facies: Terrestrial
- Climate: Temperate
- Lithofacies: Conglomerate, Andesitic tuff breccia, Volcanic breccia
- Lithofacies (Minor): Sandstone
- Thickness: 600 m
- Upper limit: Bottom of well-sorted sandstone bed
- Upper limit: Unconformity (Osarubegawa Formation)
- Lower limit: Bottom of the bed intercalating conglomerate and sandstone
- Lower limit: Conformity (Omata Formation)
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Komata river - Kozama river, Kitaakita city, Akita pref.
- Fossils (Aniai-type flora): Carpinus cfr. subcordata, Fagus sp., Juglans japonica, Metasequoia sp., Populus sp., Tilia sp., Ulmus sp.
- Sumi and Moritani (1973) Geology of the Yonaizawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 46p. (in Japanese with English abstract 4p.)