Orikado Basalt and Mudstone Member

[ Top ] [ Japanese ]

Orikado Basalt and Mudstone Member

Type locality: Yamanashi prefecture
Volcanic rocks
Miocene
Contemporaneous heterotopic facies: Yamaho Mudstone and Tuff Member
Intruded by: Alkaline basalt

Lithofacies: Basalt, Dolerite
Lithofacies (Minor): Mudstone, Dacitic tuff, Lapilli tuff, Tuffaceous sandstone

Ashigawa Formation (West)
[ Upper ]
--------------
Yamaho Mudstone and Tuff Member
--------------
Kurosawa Basalt and Mudstone Member
--------------
[ Lower ]

Ashigawa Formation (East)
[ Upper ]
--------------
Takahagi Basalt Member
--------------
Orikado Basalt and Mudstone Member
--------------
[ Lower ]

Nishiyatsushiro Group (western Kofu, Yamanashi pref.)
[ Upper ]
--------------
Kawaguchi Formation
--------------
Ashigawa Formation / Ichinose Formation
--------------
[ Lower ]

Nishiyatsushiro Group (eastern Kofu, Yamanashi pref.)
[ Upper ]
--------------
Ichikawadaimon Formation
--------------
Ashigawa Formation
--------------
[ Lower ]

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

Distribution: Yamanashi pref.

Katada (1956) Kofu, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 27p. (in Japanese with English abstract 4p.)