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Sukaiyama Lava
- Volcanic rocks
- Pleistocene
- Lithofacies: Pyroxene andesite lava
- Sukai volcano
- [ Upper ]
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- Sukaiyama Lava
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- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Mount Sukaisan, Numata city, Gunma pref. - Nikko city, Tochigi pref.
- Kawata (1955) Nantaizan, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 43p. (in Japanese with English abstract 7p.)