Kuromoriyama Amphibolite

[ Top ] [ Japanese ]

Kuromoriyama Amphibolite Kawamura et al., 2013

Type locality: Fukazawa creek, Mount Kuromori, Ogayu, Morioka city, Iwate prefecture
Ophiolite
Island arc ophiolite
early Ordovician - early Devonian (473 - 411 Ma, K-Ar)

Lithofacies: Amphibolite

Thickness: 800 m
Distribution (Width): A few hundreds m - 1 km

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: Fukazawa creek, Mount Kuromori, Ogayu, Morioka city, Iwate pref.; Nagano pass, Morioka city - Hanamaki city, Iwate pref.; Daisaku creek, Ohasama town, Hanamaki city, 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.)