Ogawauchi Tuffaceous Sandstone Member

[ Top ] [ Japanese ]

Ogawauchi Tuffaceous Sandstone Member Taguchi, 1962

Coherent formation
Miocene
Correlation (Same): Kuriyazawa Sandstone Member

Lithofacies: Sandstone
Lithofacies (Minor): Siltstone, Acidic tuff

Thickness: 200 m

Furukuchi Formation
[ Upper ]
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Main part
'''''''/,,,,,,
Shimokomata Andesitic Tuff Breccia Member / Ogawauchi Tuffaceous Sandstone Member
'''''''/,,,,,,
Main part
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[ Lower ]

Shinjo basin, Yamagata pref.
[ Upper ]
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Furukuchi Formation
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Kusanagi Formation
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Aosawa Formation
?--?--?--?--?-
[ Lower ]

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

Distribution: Kogawauchi - Kuriyazawa, Mamurogawa city, Mogami county, Yamagata pref.
Fossils (Shellfishes): Acila sp., Cardium sp., Cerastoderma sp., Clinocardium cf. californiense, Clinocardium cf. shinjiense, Cryptonatica janthostoma, Lucinoma acutilineata, Macoma sp., Macrocallista cf. pacifica, Mya japonica, Panopea japonica, Serripes sp., Thyasira nipponica, Turritella sp.

Tsuchiya (1989) Geology of the Osawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 85p. (in Japanese with English abstract 6p.)