Ogoyayama Unit

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Ogoyayama Unit

High P/T metamorphic rocks
Deposition: Late Cretaceous
Metamorphism: Late Cretaceous (89 - 88 Ma, Lu-Hf)
Correlation: Besshi Eclogite-facies Unit

Metamorphic facies: Eclogite zone
Lithofacies: Pelitic schist, Mafic schist

Sanbagawa Metamorphic Rocks (Mount Ogoyayama, Kochi pref.)
[ Upper ]
/--/--/--/--/-
Ogoyayama Unit
/--/--/--/--/-
Shirataki Unit
/--/--/--/--/-
[ Lower ]

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

Distribution: Kuwanokawa river - Mount Ogoyayama, Motoyama city, Nagaoka county, Kochi pref.

Endo and Yokoyama (2019) Geology of the Motoyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 100p. (in Japanese with English abstract 4p.)