Sou Lava Member

[ Top ] [ Japanese ]

Sou Lava Member Kawabata and Shuto, 2000

Type locality: Soho, Nio town, Mitoyo city, Kagawa prefecture
Volcanic rocks
Setouchi volcanic belt
Miocene

Sedimentary facies: Subaqueous
Lithofacies: Calc-alkaline series
Lithofacies: Andesite - Dacite lava
Sedimentary structures: Xenolith, Xenocrysts
Sedimentary structures (Top): Columnar joints
Sedimentary structures (Lower): Flow foot breccia

Thickness: 110 m
Lower limit: Conformity (Ishido Volcaniclastic Rock Member)

Kokubudai Formation
[ Upper ]
~~~~~~~~~~~~~~
Maruyama Volcanic Rock Member
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Tsukumoyama Volcanic Rock Member
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Takinomiya Volcanic Rock Member
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Kitaura Volcanic Rock Member
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Inazumiyama Lava Member
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Shioyama Lava Member
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Sou Lava Member
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[ Lower ]

Sanuki Group
[ Upper ]
~~~~~~~~~~~~~~
Kokubudai Formation
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Higashioku Formation
~~~~~~~~~~~~~~
[ Lower ]

Setouchi Volcanic Rocks (Sanuki, Kagawa pref.)
[ Upper ]
~~~~~~~~~~~~~~
Sanuki Group
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Soho, Nio town, Mitoyo city, Kagawa pref.

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.)