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Ibukiyama Limestone Formation

• Accretionary complex
• Jurassic
• Contemporaneous heterotopic facies (Lower): Ishida Formation, Onogi Formation

• Sedimentary facies: Marine
• Lithofacies: Limestone
• Lithofacies (Minor): Chert, Slate, Greenstones

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

• Distribution: Mount Ibukiyama - Mount Iwasayama - Mount Iwakurayama, Maibara city, Shiga pref.; Kawai - Nakayama, Ibigawa city, Ibi county, Gifu pref.
• Fossils (Upper, Limestone, Fusulinids): Codonofusiella paradoxica, Fusulinella sp., Neoschwagerina cf. colamine, Neoschwagerina craticulifera, Neoschwagerina margaritae, Pseudodoliolina ozawai, Pseudofusulina ambigua, Pseudofusulina japonica, Schubertella simplex, Schwagerina subobsoleta var. okuboensis, Verbeekina verbeeki, Yabeina sp.
• Fossils (Lower, Limestone, Fusulinids): Concellina nipponica, Doliolina cf. aliciae?, Miselina aliciae, Miselina cf. ovalis, Neoschwagerina craticulifera, Neoschwagerina simplex, Parafusulina cf. erucaria, Parafusulina granum-aveuae, Pseudofusulina cf. ambigua, Pseudofusulina cf. complicata, Pseudofusulina cf. fusiformis, Pseudofusulina japonica, Pseudofusulina kraffti, Pseudofusulina multiseptata, Schubertella giraudi, Schubertella simplex, Schwagerina subobsoleta var. okuboensis, Schwagerina tschernyschewi

• Isomi (1956) Ominagahama, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 51p. (in Japanese with English abstract 6p.)