Kagura Igneous Rocks

[ Top ] [ Japanese ]

Kagura Igneous Rocks Kawamura et al., 2013

Invalid synonym: Takabiyama Greenstones (east of Mount Hayachine), Kagura Complex (west of Mount Hayachine)

Type locality: Yakushi river, Kagura, Oguni, Miyako city, Iwate prefecture
Ophiolite
Island arc ophiolite
middle - late Ordovician (453 - 437 Ma)
Intruded by: Tono Granodiorite
Correlation: Shoboji Diorite

Metamorphic facies: Epidote-Amphibolite
Lithofacies: Gabbro, Diorite, Dolerite, Basalt (Pillow lava)
Lithofacies (Minor): Quartz diorite, Tonalite, Rhyolite, Dacite, Andesite

Thickness: 1,800 m or thicker
Upper limit: Conformity (a part?), ? (Senjogataki Formation)

Kagura Igneous Rocks (Osako, Iwate pref.)
::::::::::::::
Nekosoko Body
::::::::::::::
Daisaku Zawa Body
::::::::::::::

Kagura Igneous Rocks (Kawai, Iwate pref.)
::::::::::::::
Komegamorizawa Body
::::::::::::::
Kagura Body
::::::::::::::

Kagura Igneous Rocks (Kamaishi, Iwate pref.)
::::::::::::::
Iwakurayama Body
::::::::::::::
Inugashirayama Body
::::::::::::::

Hayachine Complex
[ Upper ]
--------------
Kagura Igneous Rocks
::::::::::::::
Kuromoriyama Amphibolite
::::::::::::::
Nakadake Serpentinite
?--?--?--?--?-
[ Lower ]

South Kitakami Belt (Osako, Iwate pref.)
[ Upper ]
?--?--?--?--?-
Uchikawame Formation
?--?--?--?--?-
Funakubo Formation / Odagoe Formation
?--?--?--?--?-
Orikabetoge Formation
--------------
Nameirizawa Formation
::::::::::::::
Hayachine Complex
?--?--?--?--?-
[ Lower ]

South Kitakami Belt (Kawai, Iwate pref.)
[ Upper ]
?--?--?--?--?-
Yakushigawa Formation
--------------
Hayachine Complex
?--?--?--?--?-
[ Lower ]

South Kitakami Belt (Kamaishi, Iwate pref.)
[ Upper ]
?--?--?--?--?-
Nakawada Formation
/--/--/--/--/-
Kogawa Formation
~~~~~~~~~~~~~~
Senjogataki Formation
::::::::::::::
Hayachine Complex
?--?--?--?--?-
[ Lower ]

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

Distribution: Yakushi river, Kagura, Oguni, Miyako city, Iwate, Iwate pref.

Kawamura et al. (2013) Geology of the Hayachine San District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 101p. (in Japanese with English abstract 4p.)