Mitoyo Group

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Mitoyo Group Saito and Nakayama, 1954

Invalid synonym: Mitoyo Formation

Coherent formation
late Pliocene - early Pleistocene (2.5 - 1.0 Ma, FT)

Sedimentary facies: Fluvial
Lithofacies: Gravels, Sands, Silt

Upper limit: Conformity (Honmachi Formation)
Lower limit: Abut unconformity (Kan-onji Plutonic Rocks)

Mitoyo Group
[ Upper ]
--------------
Takase Formation
~~~~~~~~~~~~~~
Yakeo Formation
~~~~~~~~~~~~~~
Koda Formation
'''''''/,,,,,,
Saita Formation
~~~~~~~~~~~~~~
[ Lower ]

Sakaide lowland, Kagawa pref.
[ Upper ]
--------------
Ayagawa Formation
~~~~~~~~~~~~~~
Sakaide Formation
--------------
Honmachi Formation
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Mitoyo Group
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Saitagawa river, Mitoyo city, Kagawa pref.; Ayagawa city, Ayauta county, Kagawa pref.; Manno city, Nakatado county, Kagawa pref.; Kanonji city, 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.)
Kawamura and Nishiyama (2019) Jour. Geol. Soc. Japan, vol.125, no.1, pp.87-105 DOI
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.)