Kamanosawa Tuff, Sandstone and Shale Member

[ Top ] [ Japanese ]

Kamanosawa Tuff, Sandstone and Shale Member

Type locality: Kamanosawa creek, Ohata river, Yagen, Ohata town, Mutsu city, Aomori prefecture
Coherent formation
Miocene
Contemporaneous heterotopic facies: Ohatagawa Green Tuff Member
Correlation: Yunokogawa Formation
Intruded by: Quartz diorite

Lithofacies: Pumiceous tuff, Andesitic tuff breccia
Lithofacies (Minor): Sandstone, Shale, Interbedded andesitic tuff and tuffaceous sandstone

Yagen Formation (Yagen, Aomori pref.)
[ Upper ]
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Yunomatagawa Dacitic Tuff Member
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Ohatagawa Green Tuff Member / Kamanosawa Tuff, Sandstone and Shale Member
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[ Lower ]

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

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

Distribution: Yagen hot spring, Yagen, Ohata town, Mutsu city, Aomori pref.; Kamanosawa creek, Ohata river, Yagen, Ohata town, Mutsu city, Aomori pref.
Fossils: Limopsis sp.

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.)
Uemura and Saito (1957) Ohata, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 31p. (in Japanese with English abstract 8p.)