Nodani Formation

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Nodani Formation Fujimoto et al., 1951

Synonym: Noudani Formation

Type locality: Sugawa, No - Nishihiyama, Itoigawa city, Niigata prefecture
Coherent formation
Rift basin sediments
late Miocene
Intruded by: Nishikubiki Hypabyssal Rocks

Sedimentary facies: Marine
Sedimentary facies: Submarine fan (Muddy channel levee system type)
Lithofacies: Muddy turbidite
Lithofacies: Mudstone-dominant interbedded sandstone and mudstone
Lithofacies (Minor): Mudstone, Sandstone, Pumice tuff

Thickness: 1,200 - 1,300 m
Upper limit: Conformity (Kawazume Formation), Unconformity (Eboshiyama Volcanic Rocks, Kota Formation, Maekawa Mudflow Deposit)
Lower limit: Conformity (Nanbayama Formation)

Nodani Formation
[ Upper ]
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Nakanomata Mudstone Member
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Minakuchi Alternation of Sandstone and Mudstone Member
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Yokobatake Alternation of Sandstone and Mudstone Member
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[ Lower ]

Nishikubiki Group
[ Upper ]
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Kawazume Formation
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Nodani Formation
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Nanbayama Formation
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[ Lower ]

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

Distribution: Sugawa - Nishihiyama - Hayakawa river, Itoigawa city, Niigata pref.; Gozu - Tsunako river - Nakanomata river - Kuwatori river - Nadachi river - Nogawa river, Joetsu city, Niigata pref.
Fossils (Shellfishes): Anadara sp., Panomya sp.

Takano (2011) Jour. Geol. Soc. Japan, vol.117, no.4, pp.238-258 DOI
Akahane and Kato (1989) Geology of the Takada-Seibu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 89p. (in Japanese with English abstract 3p.)