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Unazawa Unit (Fujimoto, 1939) Hara et al., 2010

Invalid synonym: Unazawa Formation, Kurasawa Formation

• Accretionary complex
• Deposition (Limestone): Carboniferous, Permian (Fusulinids)
• Deposition (Chert): Early Triassic - Middle Jurassic (Radiolarians)
• Deposition (Siliceous shale): Middle - Late Jurassic (Radiolarians)
• Accretion: Middle - Late Jurassic
• Correlation: Togano Unit, upper Urayama Formation

• Sedimentary facies: Marine
• Metamorphic facies: Greenschist
• Lithofacies: Coherent facies (Chert-clastic sequence)
• Lithofacies (Minor): Sandstone, Interbedded sandstone and shale, Tuffaceous shale, Chert, Basaltic lava, Volcaniclastic rocks, Basaltic tuff

• Thickness: 400 - 800 m
• Upper limit: Thrust fault (Kawanori Unit)
• Lower limit: Thrust fault (Gozenyama Unit)

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

• Distribution: Hinata - Koshizawa, Okutama city, Nishitama county, Tokyo; Higashitani - Teppozawa creek, Ochigawa river, Chichibu city, Saitama pref.
• Fossils (Shale): Eucyrtidiellum sp., Hsuum sp., Tricolocapsa sp.
• Fossils (Radiolarians): Acanthosphaera cf. austrica, Angulobracchia sp. Archaeospongoprunum sp., Archaeospongoprunum? compactum, Archaeospongoprunum? japonicum, Archaeospongoprunum? cf. tenue, Archicapsa? sp., Archaeodictyomitra sp., Canulus sp., Capunebosphaera sp., Crucella sp., Eptingium cf. japonicum, Eucyrtidium ptyctum, Gongylothorax sakawaensis, guexella nuclata, Hsuum cf. maxwelli, Pantanellium sp., Paronacila sp., Parvicingula sp., Pratunuma cf. fusiformis, Pratunuma ? ochiensis, Praecanocaryomma sp., Pentactinocapus cf. acanthiens, Paulps? sp., Sethacapsa sp., Spongocapsula sp., Staurosphaera? sp., Stichocapsa asiatica, Stichocapsa? renzue, Stichomitra sp., Stylocpasa catenarum, Stylocapsa oblongata, Stylocapsa spiralis, Thanarla sp., Triassoampe sp., Tricolocapsa conexa, Tricolocapsa cf. fusiformis, Tricolocapsa plicarum, Tricolocapsa tetragona, Tripilidium rotundaa, Tripocyclia sp., Tritrabe sp., Unuma echinatus, Xitus? sp.
• Fossils (Conodonts): Cypridodella muelleri, Cypridodella unialata, Neogondolella bulgarica, Neogondolella constricta, Neogondolella excelsa, Neogondolella navicula steinbergensis, Neogondolella polygnathiformis, Neohindeodella aequiramosa, Neohindeodella suevica
• Fossils (Limestone, Fusulinids): Fusulina sp., Fusulinella cf. biconica, Neoschwagerina simplex, Paradoxiella sp., Parafusulina sp., Pseudodoliolina ozawai, Pseudodoliolina pseudolepida, Pseudofusulina vulgaris, Schwagerina sp.Verbeekina verbecki, Yabeina sp.

• Hara et al. (2010) Geology of the Mitsumine District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 110p. (in Japanese with English abstract 4p.)
• Sakai (1987) Geology of the Itsukaichi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 75p. (in Japanese with English abstract 5p.)