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Shijujiyama Formation

• Type locality: Mount Shijuji, Murotomisaki town, Muroto city, Kochi prefecture
• Accretionary complex
• Trench slope basin sediments
• Deposition: late Oligocene - early Miocene (Bivalves), early Miocene (Foraminifera, Radiolarians)

• Sedimentary facies: Marine
• Lithofacies (Upper): Sandstone
• Lithofacies (Lower): Mudstone
• Lithofacies (Lower, Minor): Acidic tuff
• Lithofacies (Bottom): Volcanic sandstone
• Intruded by (Mudstone): Shijujiyama Dolerite

• Thickness (Mudstone): 200 m
• Upper limit: Thrust fault (Iwato-Shiina Fault, Murotohanto Group)
• Lower limit: Unconformity

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

• Distribution: Mount Shijuji, Murotomisaki town, Muroto city, Kochi pref.

• Mizoguchi et al. (2009) Jour. Geol. Soc. Japan, vol.115, no.1, pp.17-30 DOI