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Ikuridani Group Miyamura et al., 1976

Invalid synonym: Ikuridani Formation

• Type locality: Ikuridani, Kamiishizu town, Ogaki city, Gifu prefecture
• Accretionary complex
• Deposition (Limestone): middle Permian (Fusulinids)
• Deposition (Chert): Permian - Triassic (Radiolarians)
• Deposition (Siliceous mudstone): Middle Jurassic (Radiolarians)
• Deposition (Mudstone): Middle Jurassic (Radiolarians)
• Correlation: Imajo Complex

• Sedimentary facies: Marine
• Lithofacies (Top): Slate
• Lithofacies: Sandstone
• Lithofacies (Minor): Calcareous sandstone, Chert, Slate, Limestone
• Sedimentary structures: Joints

• Thickness: ca. 7,000 m
• Upper limit: Ryozensan Thrust Fault (Ojigahata Formation), Thrust fault (Ryozensan Formation)

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

• Distribution: Ikuridani, Kamiishizu town, Ogaki city, Gifu pref.; Nishinojiri, Fujiwara town, Inabe city, Mie pref.
• Fossils (Limestone, Fusulinids): Misellina claudiae, Neoschwagerina craticulifera, Parafusulina cayeuxi, Pseudofusulina lepida

• 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.)
• Miyamura et al. (1976) Geology of the Hikonetobu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 49p. (in Japanese with English abstract 6p.)