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Taiheizan Granodiorite Kano et al., 2012
- Type locality: Sannai river, Kawabe, Akita city - Hitachinai, Ani, Kitaakita city, Akita prefecture
- Plutonic rocks
- Late Cretaceous (100 - 90 Ma; 96.8 - 75 Ma, K-Ar; 90 - 60 Ma, FT; 119 - 85 Ma, Rb-Sr)
- Intruded by: Haginari Granite, Nibetsu Granite
- Lithofacies: Biotite hornblende granodiorite, Biotite granodiorite
------ Transitional, ~~~~~~ Intrusive, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Sannai river, Kawabe, Akita city - Hitachinai, Ani, Kitaakita city, Akita pref.; Upper reaches of Ani river - upper reaches of Koani river, Aniai, Kitaakita city, Akita pref.; Yoroihata dam, Senboku city, Akita pref.
- Kano (2018) Jour. Geol. Soc. Japan, vol.124, no.10, pp.781-803 DOI
- Kano et al. (2012) Geology of the Aniai District, 2nd Edition, 1:50,000 Quadrangle Series, Geological Survey of Japan, AIST, 59p. (in Japanese with English abstract 4p.)
- 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.)