Kawaguchi Porcelanite Member

Kawaguchi Porcelanite Member Chinzei, 1958

Invalid synonym: Kawaguchi Hard Shale Member

The part composed of Opal-CT, where is changed from Opal-A by diagenesis.

Type locality: Mabechi river, Kawaguchi - Shitazaki, Kintaichi, Ninohe city, Iwate prefecture
Coherent formation
middle Miocene

Sedimentary facies: Marine
Lithofacies: Shale
Lithofacies (Minor): Sandstone

Yanagisawa Formation
[ Upper ]
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Kawaguchi Porcelanite Member
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[ Lower ]

Sannohe Group
[ Upper ]
~~~~~~~~~~~~~~
Kubo Formation
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Shitazaki Formation
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Yanagisawa Formation
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Zyumonzi Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Mabechi river, Kawaguchi - Shitazaki, Kintaichi, Ninohe city, Iwate pref.; Kaisho river, Yachi, Kintaichi, Ninohe city, Iwate pref.

Tuzino et al. (2018) Geology of the Ichinohe District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 161p. (in Japanese with English abstract 4p.)