Chaya Sandstone and Mudstone Member

[ Top ] [ Japanese ]

Yakuoji Siltstone and Sandstone Member

Invalid synonym: Yakuoji Formation

Coherent formation
Miocene sediments related to the paleo Setouchi inner sea
early Miocene

Sedimentary facies: Marine
Water temperature: Subtropical (Foraminifera)
Lithofacies: Sandstone-dominant interbedded sandstone and mudstone

Upper limit: Unconformity (Yakuoji Siltstone and Sandstone Member)
Lower limit: Conformity (Mitsugano Shale and Sandstone Member)

Katada Formation
[ Upper ]
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Yakuoji Siltstone and Sandstone Member
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Chaya Sandstone and Mudstone Member
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[ Lower ]

Ichishi Group
[ Upper ]
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Katada Formation
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Oi Formation
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Haze Formation
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[ Lower ]

First Setouchi Supergroup (Ichishi, Mie pref.)
[ Upper ]
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Ichishi Group
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[ Lower ]

[ Upper ]
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Second Setouchi Supergroup
?--?--?--?--?-
First Setouchi Supergroup
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[ Lower ]

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

Distribution: Katada town, Tsu city, Mie pref.
Fossils (Foraminifera): Globigerinita glutinata
Fossils (Diatoms): Coscinodiscus marginatus, Coscinodiscus spp. Stephanopyxis spp., Thalassionema nitzschioides, Crucidenticula sawamurae, Crucidenticula ikebei

Oshida et al. (2018) Jour. Geol. Soc. Japan, vol.124, no.11, pp.919-933 DOI