Kamogawa Basalt

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Kamogawa Basalt

Accretionary complex
early Miocene
Intruded in: Mineoka Body, Mineoka Group

Sedimentary facies: Marine
Sedimentary facies: Submarine volcano
Lithofacies: High-alkaline tholeiite
Lithofacies: Aphric basalt pillow lava
Lithofacies (Minor): Porphytic basalt, Dolerite

Furubo Formation
[ Upper ]
--------------
Kamogawa Basalt
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Ishibatake Conglomerate Member
~~~~~~~~~~~~~~
[ Lower ]

Hota Group (Western part)
[ Upper ]
~~~~~~~~~~~~~~
Ezuki Formation
--------------
Tomiyama Formation
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Aokiyama Formation
--------------
Masuma Formation
::::::::::::::
[ Lower ]

Hota Group (Eastern part)
[ Upper ]
~~~~~~~~~~~~~~
Emi Formation
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Nabuto Formation
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Takazuru Formation
--------------
Furubo Formation
~~~~~~~~~~~~~~
[ Lower ]

Mineoka Belt (Boso peninsula)
[ Upper ]
~~~~~~~~~~~~~~
Awa Group / Minamiboso Group
~~~~~~~~~~~~~~
Hota Group
::::::::::::::
Mineoka Group
?--?--?--?--?-
[ Lower ]

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

Distribution: Shinyashiki - Isomura - Sorogawa river, Kamogawa city, Chiba pref.

Nakajima et al. (1981) Geology of the Kamogawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 107p. (in Japanese with English abstract 7p.)