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Lower Nihonmatsu Tuff Fujii, 1966
- Type locality: middle reaches of Kanagi river, Kanagi town, Goshogawara city, Aomori prefecture
- Tephra
- Pliocene
- Sedimentary facies: Under water
- Lithofacies: Micaceous lapilli tuff
- Lithofacies (Minor): Tuff breccia
- Sedimentary structures: Graded bedding
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Kawakura, Kanagi town, Goshogawara city, Aomori pref.; Kanagi river, Kanagi town, Goshogawara city, Aomori pref.; Kanoko fall, Kiraichi, Kanagi town, Goshogawara city, Aomori pref.
- Fujii (1981) Geology of the Aburakawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 38p. (in Japanese with English abstract 3p.)
- Fujii (1966) Kanagi, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 40p. (in Japanese with English abstract 4p.)