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Futamatayama volcano (Ban and Takaoka, 1995) Yamamoto, 1999
- Type locality: Futamata forest road, Futamata, Tenei city, Iwase county, Fukushima prefecture
- Volcanic rocks
- middle - late Pleistocene
- Lithofacies: Orthopyroxene clinopyroxene andesite lava, Pyroclastic rocks
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Futamata, Tenei city, Iwase county, Fukushima pref.; Mount Futamata - Tsurunuma river, Shimogo city, Minamiaizu county, Fukushima pref.
- Yamamoto (1999) Geology of the Tajima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 85p. (in Japanese with English abstract 8p.)