Kitaura Volcanic Rock Member

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Kitaura Volcanic Rock Member Noda et al., 2017

Type locality: Futorejima island - Kitaura port, Ibukijima island, Kanonji city, Kagawa prefecture
Volcanic rocks
Setouchi volcanic belt
Miocene

Sedimentary facies: Subaqueous
Lithofacies: Calc-alkaline series
Lithofacies: Basaltic andesite - Andesite tuff breccia, Gravel-bearing tuffaceous sandstone, Clinopyroxene olivine basaltic andesite sills, Andesite - Basaltic andesite lava
Sedimentary structures: Parallel stratification, Low-angle cross stratification, Slump structures
Sedimentary structures (Minor): Columnar joints

Thickness: ca. 90 m
Thickness (Volcaniclastic rocks): ca. 10 m
Thickness (Lava): 3 m or thicker
Upper limit: Conformity (Takinomiya Volcanic 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
--------------
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
--------------
Higashioku Formation
~~~~~~~~~~~~~~
[ Lower ]

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

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

Distribution: Futorejima island - Kitaura port - Maura port - Nishiura seashore, Ibukijima island, , Kanonji 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.)