Maruyama Formation

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Maruyama Formation Takahashi et al., 2004

Type locality: Sugisawa, Tadami city, Minamiaizu county, Fukushima prefecture
Accretionary complex
Deposition: Permian
Correlation: Shiratogawa Formation?

Sedimentary facies: Marine
Lithofacies: Mélange facies
Matrix: Mudstone
Exotic blocks (Crusts): Ultramafic rocks, Gabbro, Basalt, Dolerite, Basaltic volcaniclastics

Thickness: 3,000 m or thicker
Upper limit: Fault (Sodesawa Formation)
Lower limit: Fault (Takizawa Formation)

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

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

Distribution: Sugisawa - 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.)