Ogura Welded Tuff Member

[ Top ] [ Japanese ]

Ogura Welded Tuff Member Ozawa et al., 1979

Type locality: Ogura, Higashiyuri, Yurihonjo city, Akita prefecture
Volcanic rocks
early Miocene
Contemporaneous heterotopic facies: Lower Hatamura Formation

Lithofacies: Pyroxene andesite welded tuff
Lithofacies (Minor): Tuff, Lapilli tuff, Acidic tuff

Thickness: 0 - 180 m

Hatamura Formation
[ Upper ]
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Upper part
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Middle part / Takayakushiyama Andesite Member / Mashikozawa Welded Tuff Member
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Lower part / Ogura Welded Tuff Member / Takayakushiyama Andesite Member
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[ Lower ]

Hatamura Formation
[ Upper ]
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Upper part
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Middle part / Taikura Basalt Member
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Lower part / Taikura Basalt Member
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[ Lower ]

Hatamura Formation
[ Upper ]
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Upper part / Shimizubuchi Tuff Member / Zentoku Tuff Member
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Middle part / Shimizubuchi Tuff Member
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Lower part
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[ Lower ]

Honjo - Yashima, Akita pref.
[ Upper ]
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Onnagawa Formation
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Sugota Formation / Gongenyama Formation
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Hatamura Formation
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Kanotsume Formation / Yashiozawakawa Formation
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Oyana Formation
~~~~~~~~~~~~~~
Yamauchi Formation
?--?--?--?--?-
[ Lower ]

Asamai - Yuzawa, Akita pref.
[ Upper ]
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Onnagawa Formation
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Sugota Formation
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Hatamura Formation
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Iizawa Formation / Sarakawa Formation
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Yunosawagawa Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Ogura, Higashiyuri, Yurihonjo city, Akita pref.

Ozawa et al. (1979) Geology of the Asamai District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 53p. (in Japanese with English abstract 4p.)