Shiba Formation

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Shiba Formation

Coherent formation
Carboniferous

Lithofacies: Limestone, Calcareous slate
Lithofacies (Minor): Siliceous slate

Thickness: 300 - 600 m

South Kitakami Belt (Hitokabe, Iwate pref.)
[ Upper ]
~~~~~~~~~~~~~~
Toyoma Formation
::::::::::::::
Omoriyama Formation
?--?--?--?--?-
Tochu Formation
~~~~~~~~~~~~~~
Shiba Formation
~~~~~~~~~~~~~~
Yonesato Formation
?--?--?--?--?-
[ Lower ]

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

Distribution: Esashiyonesato, Oshu city, Iwate pref.; Mayooka, Miyamori town, Tono city, Iwate pref.; Doba, Otomo town, Tono city, Iwate pref.; Mount Karo, Sumita city, Kisen county, Iwate pref.
Fossils: Crinoids, Bryozoans
Fossils (Corals): Dibunophyllum sp., Diphyphyllum sp., family Hapsiphyllidae, Kueichouphyllum sp., Lithostrotion sp., Siphonodendron sp.

Hirokawa and Yoshida (1954) Hitokabe, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 33p. (in Japanese with English abstract 14p.)