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Hirotakayama Andesite
- Lithofacies: Hornblende andesite, Augite-bearing hornblende andesite
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Mount Kanmuriyama - Mount Onigajoyama - Mount Hirotakayama - Matsunokitoge pass, Hatsukaichi city, Hiroshima pref.; Hikimi town, Masuda city, Shimane pref.; Muikaichi - Mount Gakugakuyama - Kawazugoe, Yoshika city, Kanoashi county, Shimane pref.
- Takahashi et al. (1989) Geology of the Tsuda District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 56p. (in Japanese with English abstract 4p.)