Higashidaki Formation

[ Top ] [ Japanese ]

Higashidaki Formation Jinbo, 1931

Type locality: Higashitaki, Hiranai city, Higashitsugaru county, Aomori prefecture
Coherent formation
Miocene

Sedimentary facies: Subaqueous
Lithofacies (Top): Acidic tuff
Lithofacies (Top, Minor): Siltstone
Lithofacies: Siltstone, Interbedded tuff and siltstone, Rhyolitic tuff breccia, Rhyolite lava, Dolerite

Thickness: 440 m
Upper limit: Conformity (Wadagawa Formation)
Lower limit: Conformity (Benkeinai Formation)

Natsudomari peninsula, Aomori pref.
[ Upper ]
~~~~~~~~~~~~~~
Moura Andesites
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Sasamoriyama Volcanic Rocks
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Wadagawa Formation
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Higashidaki Formation
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Benkeinai Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Benkeinai creekHigashitaki - Shirasu, Hiranai city, Higashitsugaru county, Aomori pref.

Uemura (1983) Geology of the Asamushi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 40p. (in Japanese with English abstract 4p.)