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Ra

• Type locality: Totsukawa city, Yoshino county, Nara prefecture
• Accretionary complex
• Late Cretaceous
• Correlation: R1, upper R3
• Correlation (Top): Ru
• Correlation (Upper): Rm
• Correlation (Lower): Rl

• Sedimentary facies: Marine
• Lithofacies: Shale, Mudstone-dominant interbedded sandstone and mudstone
• Lithofacies (Minor): Sandstone-dominant interbedded sandstone and mudstone, Gravel-bearing mudstone, Felsic tuff

• Thickness: 2,200 m

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

• Distribution: Tamagaito - Yamategawa river, Totsukawa city, Yoshino county, Nara pref.

• Tokiwa et al. (2007) Jour. Geol. Soc. Japan, vol.113, no.6, pp.270-273 DOI
• Tokuoka et al (1981) Geology of the Ryujin District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 69p. (in Japanese with English abstract 6p.)