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Ashitani Formation
- Collision type metamorphism by the subduction of Yangtze plate under Sino-Korea plate
- Intermediate metamorphic rocks
- Metamorphism: middle Permian - Middle Triassic
- Lithofacies: Hornblende gneiss, Biotite hornblende gneiss
- Lithofacies (Minor): Biotite gneiss, Diopside gneiss, Limestone
- Lithofacies (Protolith): Mafic volcanic products-bearing sandstone
- Lithofacies (Protolith, Minor): Mudstone, Limestone
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Kamikodani - Miyagawa river, Miyagawa town, Hida city, Gifu pref.; Ashidani - Kamiasakawabaradani valley - Ho - Myogase - Kurigatani, Kawai town, Hida city, Gifu pref.
- Nozawa et al. (1975) Geology of the Hida-Furukawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 79p. (in Japanese with English abstract 9p.)