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Ryujin Formation

• Type locality: Ryujin town, Tanabe city, Wakayama prefecture
• Accretionary complex
• Late Cretaceous, late Campanian - Maastrichtian (76 - 72 Ma)

• Sedimentary facies: Marine
• Sedimentary facies: Lower continental slope, Trench
• Lithofacies: Shale dominant interbedded sandstone and shale
• Lithofacies (Minor): Sandstone dominant interbedded sandstone and shale, Siliceous tuff, Greenstones

• Upper limit: Shimotahara Thrust fault
• Lower limit: Gobo-Totsukawa Thrust fault

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

• Distribution: Toragamine, Ryujin town, Tanabe city, Wakayama pref.; Gobo city - Hidakagawa city, Hidaka county, Wakayama pref.; Totsukawa city, Yoshino county, Nara pref.

• Ota et al. (2019) Jour. Geol. Soc. Japan, vol.125, no.5, pp.329-347 DOI
• Shimura et al. (2017) Jour. Geol. Soc. Japan, vol.123, no.11, pp.925-937 DOI
• Tokiwa et al. (2016) Jour. Geol. Soc. Japan, vol.122, no.12, pp.625-635, DOI
• Yao (2012) Jour. Geol. Soc. Japan, vol.118, Supplement, pp.90-106 DOI
• Tokiwa et al. (2007) Jour. Geol. Soc. Japan, vol.113, no.6, pp.270-273 DOI
• Win et al. (2007) Jour. Geol. Soc. Japan, vol.113, no.4, pp.133-145 DOI