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Kozuki Formation Igi and Wadatsumi, 1980

Invalid synonym: UT-3 Sub-belt, Ozaki Formation, Hieda Formation, Nishiobatake Formation

• Type locality: Kozuki, Sayo city, Sato county, Hyogo prefecture
• Accretionary complex
• Deposition (Limestone): Carboniferous (Fusulinids, Corals)
• Deposition (Chert): Late Devonian - early Permian (Radiolarians)
• Deposition (Clastic rocks): middle - late Permian (Radiolarians)
• Correlation: Kunisaki Complex

• Sedimentary facies: Marine
• Lithofacies: Mudstone, Felsic tuff, Basalts, Mafic tuff, Sandstone
• Lithofacies (Minor): Limestone, Chert, Conglomerate

• Thickness:2,0500 m or thicker
• Distribution (Width): ca. 5 km

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

• Distribution: Kozuki, Sayo city, Sayo county, Hyogo pref.; Mimasaka city, Okayama pref.
• Fossils (Limestone): Bryozoans, Crinoids
• Fossils (Limestone, Corals): Amygdalophyllum aff. naosoideum, Clisaxophyllum cf. awa, Lonsdaleoides? sp., Pseudopavona cf. taisyakuana, Siphonodendron? sp.
• Fossils (Limestones, Fusulinids): Fusulinella biconica, Fusulinella aff. bocki, Fusulinella cf. hanzawai, Fusulinella itoi?, Fusulinella simplicata
• Fossils (Chert, Radiolarians): Pseudoalbaillella bulbosa, Holoeciscus foremanae, Holoeciscus elongatus, Ceratoikiscum cf. avimexpectans, Palaeoscendium cladophorum, Trilonche sp., Triaenosphaera sp., Archocyrtium sp., Popofskyellidae gen. et sp. indet
• Fossils (Clastic rocks, Radiolarians): Follicucullus charveti, Follicucullus scholasticus, Albaillella asymmetrica

• Takemura et al. (2018) Jour. Geol. Soc. Japan, vol.124, no.2, pp.117-125 DOI
• Sugamori et al. (2012) Jour. Geol. Soc. Japan, vol.118, Supplement, pp.21-36 DOI
• Sugamori (2009) Jour. Geol. Soc. Japan, vol.115, no.2, pp.80-95 DOI
• Takemura et al. (2009) Jour. Geol. Soc. Japan, vol.115, Supplement, pp.123-137 DOI
• Yamamoto et al. (2002) Geology of the Yamasaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 48p. (in Japanese with English abstract 4p.)
• Yamamoto et al. (2000) Geology of the Tatsuno District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 66p. (in Japanese with English abstract 5p.)
• Igi and Wadatsumi (1980) Geology of the Kamigori District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 74p. (in Japanese with English abstract 4p.)