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Yamadano Formation

• Type locality: Yamadano, Tateishi town, Ajigasawa city, Nishitsugaru county, Aomori prefecture
• Coherent formation
• Terrace deposit
• Pleistocene

• Sedimentary facies: Fluvial?
• Lithofacies: Sands
• Lithofacies (Minor): Gravels, Clay, Mud

• Thickness: 20 m or thinner
• Lower limit: Unconformity (Narusawa Formation, Koganeyama Formation)

• Distribution: Yamadano, Tateishi town, Ajigasawa city, Nishitsugaru county, Aomori pref.
• Fossils: Wood fragments

• Ozawa and Hirayama (1970) Geology of the Goshogawara District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 25p. (in Japanese with English abstract 3p.)
• 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.)