Tanono Sandstone Member

[ Top ] [ Japanese ]

Tanono Sandstone Member (Nakagawa, 1955) Noda et al., 1997

Invalid name: Tanono Formation, Tanono Sandstone, Ochiai Alternation

Type locality: Tanono, Onohara town, Kanonji city, Kagawa prefecture
Coherent formation
Izumi sedimentary basin
Forearc basin associated with strike-slip fault related to Median Tectonic Line
Late Cretaceous, early - late Campanian
Interfingered: Hiketa Formation
Intruded by: Felsic volcanic rock dikes

Lithofacies (Top): Mudstone-dominant interbedded sandstone and mudstone
Lithofacies: Sandstone-dominant interbedded sandstone and mudstone
Lithofacies (Minor): Felsic tuff

Thickness: 2,000 m or thicker
Upper limit: top of a thick felsic tuff
Upper limit: Transitional (Ebisukui Mudstone Member), Unconformity (Saita Formation, Yakeo Formation)
Lower limit: bottom of the horizon including sandstone-bearing interbedded sandstone and mudstone

Takikubo Formation
[ Upper ]
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Ashiro Mudstone Member
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Unpenji Sandstone Member
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Ebisukui Mudstone Member
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Tanono Sandstone Member
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Minoura Sandstone and Mudstone Member
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[ Lower ]

Main facies (Sanuki mountains, Tokushima pref.)
[ Upper ]
'''''''/,,,,,,
Bandodani Formation
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Higaidani Formation
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Horita Formation
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Takikubo Formation
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[ Lower ]

Izumi Group
[ North ]
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Northern marginal facies
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Main facies
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Southern facies
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[ South ]

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

Distribution: Tanono - Marui - Awai town - Uchinono, Kanonji city, Kagawa pref.; Kinsei town - Shibau town - Handa - Kiriyama, Shikokuchuo city, Ehime pref.
Fossils: Inoceramus balticus var. toyajoanus, Inoceramus cf. ezoensis, Trace fossils, Plants
Fossils (Radiolarians): Amphipyndax enesseffi (<=Amphipyndax pseudoconulus), Amphipyndax tylotus, Archaeodictyomitra squinaboli, Dictyomitra densicostata, Dictyomitra koslovae, Pseudoaulophacus lenticulatus, Pseudotheocampe abschnitta, Theocampe altamontensis

Noda et al. (2017) Geology of the Kan-onji District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 96p. (in Japanese with English abstract 4p.)