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Oishi Formation

• High P/T metamorphic rocks
• Deposition: Middle - Late Jurassic
• Metamorphism: Late Cretaceous (98.2, 91.2 Ma, K-Ar)

• Lithofacies: Greenstones, Siliceous rocks

• Upper limit: Aridagawa Tectonic Line (Wakayama) (Chichibu Belt)

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Aridagawa city, Arida county, Wakayama pref.

• Yao (2012) Jour. Geol. Soc. Japan, vol.118, Supplement, pp.90-106 DOI