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Okubo Mudstone Member Kikukawa et al., 2018

• Type locality: Okubo, Nishinoomote city, Kagoshima prefecture
• Accretionary complex
• Deposition: early Oligocene (30.0 - 28.5 Ma)

• Sedimentary facies: Marine
• Lithofacies (Main): Mudstone
• Lithofacies (Minor): Sandstone, Tuff

• Thickness: 50 - 80 m

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

• Distribution: Okubo - Osaki - Kaminofuruta - Cape Kishigasaki - Izeki, Nishinoomote, Nishinoomote city, Kagoshima pref.
• Fossils (Traces): Chndrites ispp., Phycodes isp., Tasselia ordamensis, Thalassinoides suevicus, Zoophycos isp.

• Kikukawa et al. (2018) Jour. Geol. Soc. Japan, vol.124, no.5, pp.313-329 DOI