Ishiba Formation

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Ishiba Formation Kurimoto and Makimoto, 1990

Type locality: Yamasaki - Ishiba, Fukuchiyama city, Kyoto prefecture
Accretionary complex
middle - late Permian (Radiolarians)

Sedimentary facies: Marine
Lithofacies (Upper): Chert, Shale, Sandstone
Lithofacies (Upper, Minor): Interbedded greenstones and shale
Lithofacies (Lower): Basalt lava, Pillow lava, Volcaniclastic rocks
Lithofacies (Lower, Minor): Limestone

Thickness: ca. 60 m
Distribution (Width): 150 - 250 m

Ultra-Tamba Belt (Fukuchiyama, Kyoto pref.)
[ North ]
/--/--/--/--/-
Ishiba Formation
/--/--/--/--/-
Ebara Formation
/--/--/--/--/-
Takatsu Formation
/--/--/--/--/-
[ South ]

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

Distribution: Yamasaki - Ishiba - Kawakita - Izaki - Shinjo, Fukuchiyama city, Kyoto pref.
Fossils (Radiolarians): Entactiniidae gen. et sp. indet., Follicucullus sp.

Kurimoto and Makimoto (1990) Geology of the Fukuchiyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 97p. (in Japanese with English abstract 5p.)