Otori Formation

[ Top ] [ Japanese ]

Otori Formation (Yamamoto et al., 2000) Takahashi et al., 2004

Type locality: Otori dam, Tadami city, Minamiaizu county, Fukushima prefecture
Accretionary complex
Deposition: Permian

Sedimentary facies: Marine
Lithofacies: Mélange facies
Matrix: Mudstone
Exotic blocks (Crusts, Slabs): Rhyolite tuff, Tuffaceous sandstone, Interbedded sandstone and mudstone, Basalt, Basalt volcaniclastics, Granite, Gabbro

Thickness: 4,000 m or thicker
Lower limit: Fault (Kuromatagawa Complex)

Okutadami, Fukushima pref.
[ Upper ]
/--/--/--/--/-
Sodesawa Formation
/--/--/--/--/-
Maruyama Formation
/--/--/--/--/-
Takizawa Formation
/--/--/--/--/-
Otori Formation
/--/--/--/--/-
[ Lower ]

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

Distribution: Otori dam - Tadami river, Tadami city, Minamiaizu county, Fukushima pref.

Takahashi et al. (2004) Geology of the Suhara District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 80p. (in Japanese with English abstract 4p.)