Katsuura Mudstone Member

[ Top ] [ Japanese ]

Katsuura Mudstone Member

Type locality: Mount Hachiminezan, Manno city, Nakatado county, Kagawa prefecture
Coherent formation
Izumi sedimentary basin
Forearc basin associated with strike-slip fault related to Median Tectonic Line
Late Cretaceous, middle Campanian (79.3 Ma, U-Pb)

Lithofacies: Mudstone

Horita Formation
[ Upper ]
--------------
Katsuura Mudstone Member
--------------
Nagoro Sandstone Member
--------------
[ Lower ]

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

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

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

Distribution: Mount Hachiminezan - Masuzu - Haze, Manno city, Nakatado county, Kagawa pref.; Takinooku - Shibau - Kochidanigawa river, Miyoshi city, Tokushima 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.)