Migitaniyama Formation

[ Top ] [ Japanese ]

Migitaniyama Formation Takahashi et al., 1989

Accretionary complex
Early - Middle Permian (Radiolarians)

Sedimentary facies: Marine
Lithofacies: Siliceous shale, Sandstone, Interbedded sandstone and mudstone
Lithofacies (Minor): Chert, Felsic tuff

Upper limit: Unconformity (Mikazura Formation)
Lower limit: Unconformity (Kogorosan Formation)

Nishiki Group
[ Upper ]
/--/--/--/--/-
Mikazura Formation
--------------
Migitaniyama Formation
--------------
Kogorosan Formation
/--/--/--/--/-
[ Lower ]

Akiyoshi Belt
[ Upper ]
/--/--/--/--/-
Tsunemori Formation
/--/--/--/--/-
Akiyoshi Limestone
/--/--/--/--/-
Ota Group
/--/--/--/--/-
Nishiki Group
/--/--/--/--/-
[ Lower ]

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

Distribution: Mount Migitaniyama, Iwakuni city, Yamaguchi pref.; Kawazu, 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.)