Otokogawa facies

[ Top ] [ Japanese ]

Otokogawa facies Uemura, 1975

Type locality: Otokogawa river, Kakizaki, Kawauchi town, Mutsu city, Aomori prefecture
Volcanic rocks
Miocene

Sedimentary facies: Marine
Sedimentary facies (Lower): Submarine pyroclastic flow
Lithofacies (Top): Mudstone
Lithofacies (Upper): Pumiceous lapilli tuff, Sandy - silty tuff
Lithofacies (Lower): Rhyolitic tuff breccia
Lithofacies (Lower, Minor): Tuff, Lapilli tuff
Lithofacies (Bottom): Rhyolite lava

Lower limit: Conformity (Kinpachizawa Formation, Ushidaki facies)

Hinokigawa Formation
[ Upper ]
--------------
Takiyama facies / Hinokigawa facies
--------------
Ushidaki facies / Otokogawa facies
--------------
[ Lower ]

northern Mutsu-Kawauchi
[ Upper ]
~~~~~~~~~~~~~~
Yunomatagawa Formaiton
~~~~~~~~~~~~~~
Yunokogawa Formation
~~~~~~~~~~~~~~
Yunokawa Formation
~~~~~~~~~~~~~~
Hinokigawa Formation
--------------
Kinpachizawa Formation
~~~~~~~~~~~~~~
[ Lower ]

southern Mutsu-Kawauchi
[ Upper ]
~~~~~~~~~~~~~~
Wakinosawa Andesites
'''''''/,,,,,,
Kozawa Formation
--------------
Hinokigawa Formation
--------------
Kinpachizawa Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Otokogawa river, Kakizaki, Kawauchi town, Mutsu city, Aomori pref.; Kinpachi creek, Shukunohe river, Kawauchi town, Mutsu city, Aomori pref.
Deposit (Upper - Top): Kuroko ore deposit

Uemura (1975) Geology of the Mutsukawauchi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 39p. (in Japanese with English abstract 7p.)