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Yamasaki Formation (Kobe and Hirokawa, 1963) Ishiga, 1986

Invalid synonym: Middle Formation of Tatsuno Group, lower Nakagaichi Formation, Shingu Formation

UT-1 Sub-belt, partly UT-2 Sub-belt

• Accretionary complex
• Correlation: Hikami Formation

• Sedimentary facies: Marine
• Lithofacies: Sandstone, Mudstone
• Lithofacies (Minor): Chert, Greenstones

• Upper limit: Thrust fault (Tatsuno Formation)

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

• Distribution: Yamasaki town - Sayo town, Shiso city, Hyogo pref.; Tatsuno city - Aioi city, Hyogo pref.

• Takemura et al. (2009) Jour. Geol. Soc. Japan, vol.115, Supplement, pp.123-137 DOI
• Kobayashi (2008) Jour. Geol. Soc. Japan, vol.114, no.2, pp.80-87 DOI