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Towada Ninokura Tephra Group
Abbr.: NK
- Type locality: Aomori prefecture
- Tephra
- late Pleistocene (15 - 13 ka)
- Lithofacies: Basalt - Basaltic andesite
- Lithofacies: Scoria fall deposit, Volcanic ash (3 - 11 units)
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Kamikita plain, Aomori pref.
- Kudo (2005) Geology of the Towada District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 79p. (in Japanese with English abstract 3p.)