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Hionotani Formation
- Collision type metamorphism by the subduction of Yangtze plate under Sino-Korea plate
- Intermediate metamorphic rocks
- Metamorphism: middle Permian - Middle Triassic
- Intruded by: Granite
- Correlation: Magawadani Formation
- Lithofacies: Limestone, Clinopyroxene gneiss
- Lithofacies (Minor): Biotite gneiss, Hornblende biotite gneiss, Hornblende gneiss
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Momosegawa river - Hionotani valley, Toga town, Nanto city, Toyama pref.
- 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.)