Nodaira Member

[ Top ] [ Japanese ]

Nodaira Member Tanaka and Hirabayashi, 1964

Type locality: Toritate forest road, Omachi city, Nagano prefecture
Coherent formation
Miocene

Sedimentary facies: Marine
Lithofacies (Upper): Interbedded sandstone and sandy mudstone, Sandstone
Lithofacies (Middle): Interbedded sandstone and mudstone
Lithofacies (Lower): Interbedded sandstone and sandy mudstone
Lithofacies (Lower, Minor): Conglomerate
Sedimentary structures (Middle): Cross stratification
Sedimentary structures (Lower): Parallel stratification

Thickness: 700 m
Upper limit: Conformity, partly transitional (Ronji Formtion), Transitional (Agero Member)
Lower limit: Conformity (Hosei Member)

Aoki Formation (Nagano, Nagano pref.)
[ Upper ]
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Asakawa Member
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Hitoeyama Member
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[ Lower ]

Aoki Formation (Matsumoto, Nagano pref.)
[ Upper ]
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Kitayama Mudstone and Sandstone Member
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Hakumaki Sandstone and Conglomerate Member
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[ Lower ]

(Invalid) Aoki Formation (Togakushi, Nagano pref.)
[ Upper ]
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Asakawa Mudstone Member
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Senmi Sandstone Mudstone Member => Ronji Formation
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Nishikyo Mudstone Member
?--?--?--?--?-
[ Lower ]

(Invalid) Aoki Formation (Omachi, Nagano pref.)
[ Upper ]
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Agero Member
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Nodaira Member
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Hosei Member
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Sodeyama Member
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[ Lower ]

Hokushin Group
[ Upper ]
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Shigarami Formation
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Ogawa Formation
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Aoki Formation
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[ Lower ]

northern Nagano pref.
[ Upper ]
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Hokushin Group
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Chushin Group
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[ Lower ]

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

Distribution: Toritate forest road - Funaba - Ishidatami - Ichinose - Ishihara, Omachi city, Nagano pref.
Fossils (Shellfishes): Portlandia (Portlandia) cf. watasei
Fossils (Plants): Carpinus sp., Castanea sp., Cyclobalanopsis, Eagus paleocrenata
Fossils (Foraminifera): Cibicides lobatulus, Cyclammina cf. pussilla, Discorbis sp., Haplophragmoides cf. reuzi, Rotalia deccarii

Kato et al. (1989) Geology of the Omachi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 111p. (in Japanese with English abstract 7p.)
Kato and Sato (1983) Geology of the Shinano-Ikeda District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 93p. (in Japanese with English abstract 7p.)