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Karahoriyama Formation
- Collision type metamorphism by the subduction of Yangtze plate under Sino-Korea plate
- Intermediate metamorphic rocks
- Metamorphism: middle Permian - Middle Triassic (223, 195, 174 Ma, K-Ar)
- Intruded by: Usunami Granite
- Lithofacies: Hornblende gneiss, Hornblende biotite gneiss
- Lithofacies (Minor): Biotite gneiss, Sillimanite garnet biotite gneiss, Limestone, Clinopyroxene gneiss
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Mount Karahoriyama, Hida city, Gifu pref. - Toyama city, Toyama pref.; Kagasawa, Toyama city, Toyama pref.
- Takeuchi et al. (2019) Jour. Geol. Soc. Japan, vol.125, no.6, pp.453-459 DOI
- Nozawa et al. (1981) Geology of the Shirokimine District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 85p. (in Japanese with English abstract 10p.)