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Hatsutoji Formation (Kishida and Wadatsumi, 1967) Igi and Wadatsumi, 1980
Invalid synonym: Hatsutoji Rhyolite
- Type locality: Hatsutoji, Yoshinaga town, Bizen city, Okayama prefecture
- Volcanic rocks
- Late Cretaceous
- Lithofacies: Rhyolite lava
- Sedimentary structures: Flow structures, Spherulitic structures
- Ako Formation
- [ Upper ]
- ~~~~~~~~~~~~~~
- Hatsutoji Member
- ~~~~~~~~~~~~~~
- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Hatsutoji, Yoshinaga town, Bizen city, Okayama pref.
- Igi and Wadatsumi (1980) Geology of the Kamigori District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 74p. (in Japanese with English abstract 4p.)