Takayama Group

Takayama Group (Research Group for the San'in Late Mesozoic Igneous Activity, 1979) Hattori et al., 1983

Volcanic rocks
Eocene
Correlation: Sakurae Group
Intruded by: Ijimi Granite, Alkaline olivine basalt

Lithofacies: Andesite - Dacite

Distribution (Major axis): Several km
Upper limit: Abut unconformity (Toburodani Formation)
Lower limit: Unconformity (Akana Granodiorite, Onbara Granite, Ochi Group)

Takayama Group
[ North ]
~~~~~~~~~~~~~~
Hakami Volcanic Rocks
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Yugakaigawa 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: Takayama - Tsuremizu - Hakami - Yugakai - Jitojo, Misato city, Ochi county, Shimane pref.; Ikeda, Oda 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.)
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.)