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Taiaki Formation Ozawa, 1962

synonym: Tayaki Formation

• Type locality: Taiaki, Nishimeya city, Nakatsugaru county, Aomori prefecture
• Coherent formation
• Pliocene
• Contemporaneous heterotopic facies: Soma Agglomerate Formation, Matsukitai Formation?
• Correlation (Tuff): Obirakiyama Pyroclastic Flow Deposit

• Sedimentary facies: Marine
• Lithofacies: Mudstone
• Lithofacies (Minor): Acidic tuff, Sandstone

• Thickness: 250 - 600 m
• Upper limit: Unconformity (Higashimeya Formation)
• Lower limit: Conformity? (Tochinaigawa Formation)

• Distribution: Taiaki, Nishimeya city, Nakatsugaru county, Aomori pref.
• Fossils: Sponges (Sagarites (Makiyama) chitanii), Shellfossils

• Ozawa (1962) Hirosaki, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 52p. (in Japanese with English abstract 5p.)