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Hakami Volcanic Rocks Sawada, 1978
- Type locality: Shitsumi, Iinan city, Iishi county, Shimane prefecture
- Volcanic rocks
- Eocene (45 Ma, FT; 30 - 25 Ma, K-Ar)
- Intruded by: Ijimi Granite, Quartz porphyry
- Lithofacies (Upper): Dacite - Rhyolite welded tuff
- Lithofacies (Lower): Andesite - Dacite lapilli tuff, Tuff breccia, Welded tuff
- Lithofacies (Contact metamorphism): Andalusite muscovite hornfels
- Sedimentary structures: Eutaxitic structure
- Thickness: 800 m or thicker
- Upper limit: Unconformity (Hata Formation)
- Lower limit: Unconformity (Shimotone Granite)
- Takayama Group
- [ North ]
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- Hakami Volcanic Rocks
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- Yugaigawa Volcanic Rocks
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- Tsuremizu Volcanic rocks
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- Takayama Volcanic Rocks
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- [ South ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
Distribution: Shitsumi, Iinan city, Iishi county, Shimane pref.; Kamihashinami - Yoshino, Izumo city, Shimane pref.
- Kano et al. (1998) Geology of the Iwami-Oda and Oura District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 118p. (in Japanese with English abstract 5p.)