Omoiji Unit

[ Top ] [ Japanese ]

Omoiji unit Wakita et al., 2007

High P/T metamorphic rocks
Deposition: Late Cretaceous
Metamorphism: Late Cretaceous (109 - 97 Ma, Ar-Ar)
Intruded by: Rhyolite - Dacite dikes

Metamorphic facies: Chlorite zone (300 - 360 degree C, 0.55 - 0.65 GPa)
Metamorphic facies: Pumpellyite-Actinolite (300 - 360�x, 0.55 - 0.65 GPa)
Lithofacies: Meta chert, Pelitic phillite

Sanbagawa Metamorphic Rocks (Hibihara, Kochi pref.)
[ Upper ]
/--/--/--/--/-
Omoiji Unit
/--/--/--/--/-
Kawamata Unit
/--/--/--/--/-
Shirataki Unit
/--/--/--/--/-
Nakashichiban Unit
/--/--/--/--/-
[ Lower ]

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

Distribution: Kochi pref.

Aoya and Yokoyama (2009) Geology of the Hibihara District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 75p. (in Japanese with English abstract 3p.)