Minoura Sandstone and Mudstone Member

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Minoura Sandstone and Mudstone Member Noda et al., 2017

Invalid synonym: Torigoe Mudstone

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, middle - late Campanian (79 Ma, FT, 78.3 Ma, U-Pb)

Lithofacies: Turbidite
Lithofacies: Interbedded sandstone and mudstone
Lithofacies (Minor): Felsic tuff, Conglomerate
Sedimentary structures: Graded bedding, Sole marks, Slump structure
Paleocurrent: from Northeast to Southwest

Thickness: 2,000 m or thicker

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 ]
~~~~~~~~~~~~~~
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: Minoura - Wada, Kanonji city, Kagawa pref.; Shiroyama - Yokisaki - Kawanoe town, Shikokuchuo city, Ehime pref.
Fossils (Radiolarians): Afens liriodes, Dictyomitra koslovae, Pseudoaulophacus floresensis

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.)