Shittakazawa Formation

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Shittakazawa Formation Kawamura and Kawamura, 1981

Coherent formation
early Carboniferous, Tournaisian (Brachiopods)

Sedimentary facies: Marine
Lithofacies (Upper): Interbedded rhyolitic tuff, sandstone and shale
Lithofacies (Upper, Minor): Limestone
Lithofacies (Middle): Rhyolitic tuff
Lithofacies (Lower): Interbedded rhyolitic tuff and conglomerate
Lithofacies (Lower, Minor): Limestone, Andesitic-basaltic tuff

Thickness: 986 m
Thickness (Upper): 229 m
Thickness (Middle): 500 m
Thickness (Lower): 257 m

South Kitakami Belt (Kamiarisu - Setamai, Iwate pref.)
[ Upper ]
?--?--?--?--?-
Nagaiwa Formation
--------------
Onimaru Formation
::::::::::::::
Odaira Formation
::::::::::::::
Arisu Formation
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Shittakazawa Formation
?--?--?--?--?-
[ Lower ]

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

Distribution: Okuhinotsuchi - Shimoarisu, Sumita city, Kesen county, Iwate pref.; Yokota town, Rikuzentakada city, Iwate pref.
Fossils (Brachiopods): Rhipidomella kusbassica, Schizophoria pinguis, Schizophoria mayesensis, Unispirifer kozuboensis

Tazawa and Kurita (2019) Jour. Geol. Soc. Japan, vol.125, no.3, pp.219-225 DOI