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Kogashira Formation

• Coherent formation
• Pleistocene

• Sedimentary facies: Marine
• Lithofacies (Upper): Siltstone
• Lithofacies (Middle): Sandstone
• Lithofacies (Lower): Conglomerate

• Thickness: 16 m
• Upper limit: Unconformity (Koyamada Formation, Shimokado Pyroclastic Flow Deposit)
• Lower limit: Unconformity (Keno Pyroclastic Flow Deposit)

• Distribution: Kotsuki river, Kogashira, Kagoshima city, Kagoshima pref.
• Fossils: Turritella fascialis, Fagus sp.
• Fossils (Bivalves): Anadara sp., Chlamys sp., Ostrea sp., Macoma sp.

• Uchimura et al. (2014) Jour. Geol. Soc. Japan, vol.120, Supplement, pp.127-153 DOI