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Asanai Terrace Deposit Tayama and Tsuchida, 1939

• Type locality: Asanai, Ninohe city, Iwate prefecture
• Mabechi river system
• Coherent formation
• middle Pleistocene (122 ka, Optical luminescence)

• Sedimentary facies: Fluvial
• Lithofacies: Gravels, Sands, Silt

• Thickness: 50 m or thinner
• Lower limit: Unconformity (North Kitakami Belt, Nisatai Formation, Ainoyama Formation, Kadonosawa Formation, Suenomatuyama Formation, Zyumonzi Formation, Yanagisawa Formation, Shitazaki Formation)

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Asanai - Nonoue - Sotoyama - Nagakubo - Jinba, Ninohe city, Iwate pref.

• Tuzino et al. (2018) Geology of the Ichinohe District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 161p. (in Japanese with English abstract 4p.)