Kanegasawa Formation

[ Top ] [ Japanese ]

Kanegasawa Formation Kitamura et al., 1972

Invalid synonym: Kanegasawa Andesites

Type locality: Kanegasawa creek, Otsubo river, Shichinohe city, Kamikita county, Aomori prefecture
Volcanic rocks
Miocene

Lithofacies: Andesite lava, Tuff breccia, Lapilli tuff
Lithofacies (Minor): Dacite lava

Thickness: 500 m
Upper limit: Unconformity (Nishinosawa Formation)
Lower limit: Unconformity (Higashidake Formation, Granodiorite)

Kamikita, Aomori pref.
[ Upper ]
~~~~~~~~~~~~~~
Moura Andesites
--------------
Sasamoriyama Volcanic Rocks
--------------
Wadagawa Formation
--------------
Yotsuzawa Formation
--------------
Nishinosawa Formation
~~~~~~~~~~~~~~
Kanegasawa Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Kanegasawa creek, Otsubo river, Shichinohe city, Kamikita county, Aomori pref.; Oshimizu creek, Ogawame creek, Takizawa, Aomori city, Aomori pref.; Kifune river, Nonai, Aomori city, Aomori pref.; Nei river, Kugurizaka, Aomori city, Aomori pref.

Uemura (1983) Geology of the Asamushi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 40p. (in Japanese with English abstract 4p.)