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Ochi Group Research Group for the San'in Late Mesozoic Igneous Activity, 1979
Invalid synonym: Akatsuka Rhyolite
- Lithofacies: Rhyolite - Dacite lapilli tuff, Tuff
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Ichiibara - Hanbe - Yadani - Tada, Kawamoto, Ochi county, Shimane pref.; Shirinashigawa river - Somori - Takahata - Hongo - Hamahara dam - Motoyama - Mukatani - Take - Hibira, Misato city, Ochi county, Shimane pref.
- Kano (2018) Jour. Geol. Soc. Japan, vol.124, no.10, pp.781-803 DOI
- Kano et al. (2001) Geology of the Yunotsu and Gotsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 129p. (in Japanese with English abstract 5p.)
- Hattori et al. (1983) Geology of the Sambesan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 168p. (in Japanese with English abstract 7p.)