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Kotaki Formation Ozawa et al., 1982

• Type locality: Hongo, Kisakata town, Nikaho city, Akita prefecture
• Coherent formation
• Holocene

• Sedimentary facies: Lacustrine
• Sedimentary facies: Dammed lake fill deposit
• Lithofacies: Sands
• Lithofacies (Minor): Gravels

• Thickness: 2 - 10 m
• Lower limit: Unconformity (Kotaki Mudflow Deposits, Kisakata Debris Avalanche Deposits)

• Distribution: Hongo - Kodaki, Kisakata town, Nikaho city, Akita pref.

• Ozawa et al. (1982) Geology of the Kisakata District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 73p. (in Japanese with English abstract 4p.)