Oda Andesite Member

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Oda Andesite Member Tottori prefecture, 1966

Volcanic rocks
Miocene

Lithofacies: Andesite tuff breccia, Lava
Lithofacies (Minor): Lapilli tuff, Tuff
Structures: Columnar joint

Thickness: 40 - 250 m
Upper limit: Conformity (Aragane Pyroclastic Member), Unconformity (Inabayama Basalt)
Lower limit: Bottom of the horizon intercalating many pyroclastic rock beds
Lower limit: Conformity (Fuganji Mudstone Member)

Iwami Formation
[ Upper ]
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Shichisan Sandstone and Mudstone Member
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Aragane Pyroclastic Member
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Oda Andesite Member
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Fuganji Mudstone Member
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Moroga Conglomerate Member
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[ Lower ]

Tottori Group (eastern Tottori pref.)
[ Upper ]
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Iwami Formation
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Kisaichi Formation
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Yazu Formation
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[ Lower ]

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

Distribution: Oda, Yazu city, Yazu county, Tottori pref.; Mitani - Amedaki fall, Tottori city, Tottori pref.; Kihara, Chizu city, Yazu county, Tottori pref.

Uemura et al. (1979) Geology of the Wakasa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 91p. (in Japanese with English abstract 8p.)