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Yura Unit

Invalid synonym: Yura Formation, Ishigaki Formation?, Idani Formation

• Type locality: Wakayama pref.
• Accretionary complex
• Deposition: Late Jurassic, Tithonian - Early Cretaceous, Valanginian (Radiolarians), Late Jurassic, Kimmeridgian (Ammonoids)
• Correlation (Limestone): Torinosu Group

• Sedimentary facies: Marine
• Lithofacies (Upper): Mélange facies
• Lithofacies (Lower): Coherent facies
• Lithofacies (Lower): Pelitic rocks
• Lithofacies (Lower, Minor): Limestone

• Upper limit: Thrust fault
• Lower limit: Thrust fault

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

• Distribution: middle - southern Yura city, Hidaka county, Wakayama pref.; Yuasa city, Arita county, Wakayama pref.
• Fossils (Limestone): Brachiopods, Hexacorallia, Stromatoporoids, Calcareous algae, Sponges
• Fossils (Limestone, Fusulinds): Lepidolina? sp., Mizzia sp., Neoschwagerina cf. craticulifera, Pseudofusulina cf. vulgaris, Pseudofusulina cf. vulgaris var. globosa, Schwagerina cf. kagemoriensis, Triticites sp., Yabeina cf. katoi

• Yao (2012) Jour. Geol. Soc. Japan, vol.118, Supplement, pp.90-106 DOI
• Hirayama and Tanaka (1956) Todorogi, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 37p. (in Japanese with English abstract 11p.)
• Hirayama and Tanaka (1956) Kainan, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 62p. (in Japanese with English abstract 12p.)