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Atoroku Formation Ozawa et al., 1985

• Type locality: Tsukida - Atoroku - Futatsumori, Mitane city, Yamamoto county, Akita prefecture
• Coherent formation
• Holocene
• Correlation: Middle II Terrace Deposit

• Sedimentary facies: Fluvial
• Sedimentary facies: River bed deposit, Mudflat deposit of river mouth of paleo-Mitane river
• Lithofacies: Mud
• Lithofacies (Minor): Sands, Gravels
• Sedimentary structures: Cross stratification

• Thickness: 12 m or thicker

• Distribution: Atoroku Terrace
• Distribution: Mitane river, Mitane city, Yamamoto county, Akita pref.; Tsukida - Atoroku - Futatsumori, Mitane city, Yamamoto county, Akita pref.

• Ozawa et al. (1985) Geology of the Moritake District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 69p. (in Japanese with English abstract 5p.)