Uchinohara Formation

[ Top ] [ Japanese ]

Uchinohara Formation Takahashi and Onuki, 1959

Type locality: Uchinohara, Mano, Ishinomaki city, Miyagi prefecture
Coherent formation
Early Jurassic

Lithofacies: Sandstone
Lithofacies (Minor): Silty sandstone

Thickness: 0 - ca. 300 m
Upper limit: Bottom of the sandy shale-bearing horizon
Upper limit: Transitional (Niranohama Formation)
Lower limit: Unconformity (Inai Group)

Shizukawa Group (Shizukawa)
[ Upper ]
~~~~~~~~~~~~~~
Hosoura Formation
--------------
Niranohama Formation
--------------
Uchinohara Formation
~~~~~~~~~~~~~~
[ Lower ]

Shizukawa Group (Ishinomaki)
[ Upper ]
~~~~~~~~~~~~~~
Mizunuma Formation
--------------
Niranohama Formation
--------------
Uchinohara Formation
~~~~~~~~~~~~~~
[ Lower ]

Shizukawa-Hashiura Subbelt
[ Upper ]
?--?--?--?--?-
Hashiura Group
~~~~~~~~~~~~~~
Shizukawa Group
~~~~~~~~~~~~~~
Saragai Group
~~~~~~~~~~~~~~
Inai Group
~~~~~~~~~~~~~~
[ Lower ]

South Kitakami Belt (after Permian)
[ West ]
::::::::::::::
Shizukawa-Hashiura Subbelt
::::::::::::::
Karakuwa-Oshika Subbelt
::::::::::::::
Ofunato Subbelt
::::::::::::::
[ East ]

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

Distribution: Uchinohara - Fukuji, Mano, Ishinomaki city, Miyagi pref.; Zaigo, Minamisanriku city, Motoyoshi county, Miyagi pref.; Nakairihata - Kusakariyama, Ishinomaki city, Miyagi pref.

Takizawa et al. (1990) Geology of the Toyoma District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 126p. (in Japanese with English abstract 8p.)
Takizawa et al. (1984) Geology of the Ishinomaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 103p. (in Japanese with English abstract 7p.)