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Iogawa Lava Fujinawa, 1980
- Volcanic rocks
- Pleistocene
- Lithofacies: Calc-alkaline
- Lithofacies: Olivine-bearing augite hypersthene andesite
- Lithofacies: Lava (A flow unit)
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: lower reaches of Io river - Takamori river, Inawashiro city, Yama county, Fukushima pref.
- Sakaguchi (1995) Geology of the Nihonmatsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 79p. (in Japanese with English abstract 4p.)