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Sandstone and Siltstone Unit

• Accretionary complex
• Oligocene

• Sedimentary facies: Marine
• Lithofacies: Siltstone, Interbedded sandstone and mudstone, Sandstone

• Upper limit: Ogawa Thrust (Mudstone Unit)

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

• Distribution: Mount Osuzu, Miyazaki pref.; Tsukigi river, Odaishi, Taragi city, Kuma county, Kumamoto pref.
• Fossils (Radiolarians): Artophormis gracilis, Lophocyrtis (Apoplanius) aspera, Lophocyrtis sp., Lophocyrtis? cavifundus, Theocyrtis aff. setanios, Theocyrtis sp., Theocorys bianulus, Calocyclas sp., Acanthdesmiidae gen. et sp. indet, Ommatogramma sp.

• Kurihara and Hara (2008) Jour. Geol. Soc. Japan, vol.114, no.2, pp.92-95 DOI