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Akataki Lavas (Kaneko, 1988), Yanagisawa et al., 2000
- Type locality: Akataki river, Maesaka, Nozawaonsen city, Shimotakai county, Nagano prefecture
- Volcanic rocks
- early Pleistocene
- Intruded by: Augite hypersthene andesite dike
- Lithofacies: Augite hypersthene andesite lava
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Akataki river, Maesaka, Nozawaonsen city, Shimotakai county, Nagano pref.
- Yanagisawa et al. (2000) Geology of the Iiyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 144p. (in Japanese with English abstract 6p.)