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Sakamototoge Unit (Kawada et al., 1988)

Invalid synonym: Akiyama Formation, Oppara Formation, Okumyogata Formation, Okuzumi Formation, Furumichi Formation

• Accretionary complex
• Deposition (Limestone): Carboniferous, Permian (Fusulinids)
• Deposition (Chert): Triassic (Radiolarians)
• Deposition (Shale): Middle Jurassic (Radiolarins)
• Correlation: Kasugano Formation
• Intruded by: Hagiwara Granodiorite Porphyry, Mizore Granite, Granite porphyry dykes

• Sedimentary facies: Marine
• Lithofacies: Mélange facies
• Matrix: Shale
• Exotic blocks (Crusts): Sandstone, Limestone, Chert, Greenstones

• Upper limit: Thrust fault, Unconformity (Yoshidagawa Andesites)
• Lower limit: Thrust fault

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

• Distribution: Kamabe - Mizore - Kera - , Gujo city, Gifu pref.; Oppara, Kiyomi town, Takayama city, Gifu pref.; Masegawa river - Kuroishi - Mihiro - Nakamura - Hane, Gero city, Gifu pref.
• Fossils (Limestone): Fusulinids
• Fossils (Chert, Radiolarians): Triassocampe sp.
• Fossils (Shale, Radiolarians): Archaeospongoprunum sp., Dictyomitrella? kamoensis, Eucyrtidiellum sp., Hsuum sp., Pantanellium? sp., Parvicingula sp., Praeoconocaryomma sp., Spongosaturnalis sp., Tricolocapsa sp.

• Sano et al. (2010) Jour. Geol. Soc. Japan, vol.116, no.6, pp.321-340 DOI
• Yamakita and Otoh (2000) Structural Geology, vol.44, pp.5-32
• Kawada et al. (1988) Geology of the Hagiwara District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 82p. (in Japanese with English abstract 10p.)