Zaimokugawa Formation

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Zaimokugawa Formation

Type locality: Zaimoku river, Oma city, Shimokita county, Aomori prefecture
Coherent formation
Miocene

Lithofacies: Diatomaceous mudstone, Sandstone

Upper limit: Conformity (Ikokuma Andesites)

Ikokuma Andesites
[ Upper ]
--------------
Zaimokugawa Formation
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[ Lower ]

Oma, Aomori pref.
[ Upper ]
~~~~~~~~~~~~~~
Ikokuma Andesites
'''''''/,,,,,,
Oma Formation
?--?--?--?--?-
[ Lower ]

Sai - Ohata river, Aomori pref.
[ Upper ]
~~~~~~~~~~~~~~
Ikokuma Andesites
~~~~~~~~~~~~~~
Yagen Formation
~~~~~~~~~~~~~~
Sai Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Zaimoku river, Okoppe river, Oma city, Shimokita county, Aomori pref.
Fossils: Sponges (Makiyama chitanii), Diatoms

Uemura (1962) Oma and Sai, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 39p. (in Japanese with English abstract 6p.)