Ashiro Mudstone Member

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Ashiro Mudstone Member

Type locality: Ashiro, Higashimiyoshi city, Miyoshi county, Tokushima prefecture
Coherent formation
Izumi sedimentary basin
Forearc basin associated with strike-slip fault related to Median Tectonic Line
Late Cretaceous

Lithofacies: 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: Ashiro - Kuzukago - Uchino - Nakanomine - Dodoro, Higashimiyoshi city, Miyoshi county, Tokushima pref.; Kunigino - Shioiri, Manno city, Nakatado county, Kagawa pref.

Noda et al. (2021) Geology of the Ikeda District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 150p. (in Japanese with English abstract 5p.)