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Sozan Lava Takahashi and Sugawara, 1985
- Type locality: Okuriyama - Mount Sozan, Kaneyama city, Onuma county, Fukushima prefecture
- Volcanic rocks
- Lava dome
- Pleistocene (43 ka, FT)
- Sedimentary facies: Dacite subjected to high temperature oxidization
- Lithofacies: Biotite-bearing orthopyroxene clinopyroxene hornblende dacite
- Lithofacies: Lava
- Thickness: ca. 360 m
- Distribution (Diameter): ca. 1 km
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Okuriyama - Mount Sozan, Kaneyama city, Onuma county, Fukushima pref.
- Masubuchi et al. (2016) Jour. Geol. Soc. Japan, vol.122, no.10, pp.533-550, DOI
- Masubuchi and Ishizaki (2011) Jour. Geol. Soc. Japan, vol.117, no.6, pp.357-376 DOI
- Yamamoto and Komazawa (2004) Geology of the Miyashita District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 71p. (in Japanese with English abstract 5p.)