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Subunit 1R

• Type locality: Southern Naha city, Okinawa prefecture (Original locality)
• Type locality: Querries of Mount Yoza - Mount Yaese, Itoman city, Okinawa prefecture (Reset by Nakamori, 1986)
• Coherent formation
• Coral reef complexes
• Pleistocene, Calabrian - ?, (1.71 - 1.39 Ma, Calcareous nannofossils)
• Contemporaneous heterotopic facies: Itoman Formation

• Sedimentary facies: Marine
• Depth of water: Island shelf (50 - 150 m)
• Lithofacies: Rodolith limestone
• Lithofacies: Cycloclypeus-Operculina limestone, Coral limestone

• Upper limit: Conformity
• Lower limit: Partly conformity, Partly unconformity

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

• Distribution: Itoman city, Okinawa pref.

• Sagae et al. (2012) Jour. Geol. Soc. Japan, vol.118, no.2, pp.117-136 DOI