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Mushikawa Formation

• Accretionary complex, Ophiolite
• middle Permian (Radiolarians)

• Sedimentary facies: Marine
• Lithofacies (Upper): Breccia, Sandstone
• Lithofacies (Lower): Mudstone
• Lithofacies (Lower, Minor): Interbedded sandstone and mudstone

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

• Distribution: Itoigawa city, Niigata pref.
• Fossils (Radiolarians): Albaillella asymmetrica, Pseudoalbaillella aff. longicornis, Pseudoalbaillella fusiformis, Pseudoalbaillella longtanensis

• Takeuchi et al. (2010) Jour. Geol. Soc. Japan, vol.116, Supplement, pp.123-142 DOI