Minokawa Formation

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Minokawa Formation Harayama et al., 1989

Type locality: Minokawa river - Tatehata, Higashiomi city, Shiga prefecture
Accretionary complex
Deposition (Mudstone): Middle Jurassic (Radiolarians)
Intruded by: Suzuka Granite

Sedimentary facies: Marine
Lithofacies: Sandstone-dominant interbedded sandstone and mudstone
Lithofacies (Minor): Chert, Hornfels
Sedimentary structures: Joints

Thickness: ca. 2,500 m
Upper limit: Unconformity (Same Welded Tuff)

Echigawa Group
[ Upper ]
/--/--/--/--/-
Minokawa Formation
/--/--/--/--/-
Kiwada Formation
/--/--/--/--/-
[ Lower ]

Mino Belt (Higashiomi, Shiga pref.)
[ Upper ]
/--/--/--/--/-
Echigawa Group
/--/--/--/--/-
[ Lower ]

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

Distribution: Minokawa - Tatehata - Chayagawa river - Mount Ryugatake - Shibukawa river, Higashiomi city, Shiga pref.
Fossils (Radiolarians): Archaeodictyomitra sp., Eucyrtidiellum sp., Hsuum sp., Parvicingula sp., Protonuma sp., Stichocapsa sp., Tricolocapsa plicarum, Tricolocapsa cf. tetragona

Harayama et al. (1989) Geology of the Gozaishoyama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 145p. (in Japanese with English abstract 6p.)