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Nanjo Formation

• Coherent formation
• First Seto Inland Sea
• Sedimentary basin in island arc
• Miocene
• Contemporaneous heterotopic facies: Nukuta Formation, Wachino Formation

• Lithofacies: Conglomerate, Sandstone

• Upper limit: Conformity
• Lower limit: Thrust fault (Ryoke Granitoids)

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

• Distribution: Tenryu river, Anan city, Nagano pref.

• Sako and Hoshi (2014) Jour. Geol. Soc. Japan, vol.120, no.8, pp.255-271 DOI