Ryokamiyama Chert Unit

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Ryokamiyama Chert Unit

Accretionary complex
Accretion: Jurassic

Sedimentary facies: Marine
Lithofacies: Chert

Lower limit: Thrust fault (Ryokami Unit)

Nakatsugawa Group
[ Upper ]
/--/--/--/--/-
Ryokamiyama Chert Unit
/--/--/--/--/-
Nogurizawa Unit
/--/--/--/--/-
Ryokami Unit = Ohirayama Unit
/--/--/--/--/-
Ogamata Unit = Ohirayama Unit
/--/--/--/--/-
[ Lower ]

Southern Chichibu Belt (Mitsumine, Saitama pref.)
[ Upper ]
/--/--/--/--/-
Nakatsugawa Group
/--/--/--/--/-
Urayama Group
/--/--/--/--/-
[ Lower ]

Chichibu Belt
[ Upper ]
/--/--/--/--/-
Kurosegawa Belt
/--/--/--/--/-
Northern Chichibu Belt
/--/--/--/--/-
Southern Chichibu Belt
/--/--/--/--/-
[ Lower ]

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

Distribution: Mount ryokamisan, Ogano city, Chichibu county - Chichibu city, Saitama pref.

Hara et al. (2010) Geology of the Mitsumine District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 110p. (in Japanese with English abstract 4p.)