[ Top ] [ Japanese ]

Wakai Complex Ozaki et al., 1995

• Accretionary complex
• Deposition (Chert): Permian, Triassic, Early Jurassic
• Deposition (Siliceous shale): Late Triassic, Early Jurassic
• Deposition (Shale): Late Triassic, Early Jurassic
• Accretion: Jurassic
• Intruded by: Hornblende biotite granite, Biotite-bearing welded lapilli tuff dikes

• Sedimentary facies: Marine
• Lithofacies: Mélange facies
• Matrix: Shale
• Exotic blocks (Crusts): Sandstone, Chert
• Lithofacies (Minor): Interbedded sandstone and shale, Chert, Basalt lava, Volcaniclastic rocks

• Thickness: ca. 2,200 m
• Upper limit: Unconformity (Okawachi Formation, Ikuno Formation, Myokenzan Formation)

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

• Distribution: Ichikawa city, Kanzaki county, Hyogo pref.; Yachiyo - Kami, Taka city, Taka county, Hyogo pref.; Kasai city, Hyogo pref.
• Fossils (Radiolarians): Canoptum aff. farawayense, Canoptum lubricum, Canoptum aff. margaritaense, Canoptum rhaeticum, Canoptum triassicum, Capnuchosphaera concava, Capnuchosphaera puncta, Charlottea amurensis, , Charlottea johnsoni, Follicucullus monacanthus, Follicucullus cf. porrectus, Follicucullus cf. ventricosus, Hsuum aff. exiguum, Kozurastrum aff. sandspitense, Palaeosaturnalis cf. liassicus, Pantanellium browni, Pantanellium danaense, Pantanellium kluense, Pantanellium sanrafaelense, Pantanellium tanuense, Parahsuum cf. ovale, Parahsuum simplum, Parvicingula sp., Praehexasarurnalis tetraradiatus, Pseudostylosphaera sp., Relanus? cf. reefensis, Thurstonia cf. gibsoni, Udalia primaeva

• Yoshikawa et al. (2005) Geology of the Ikuno District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 48p. (in Japanese with English abstract 3p.)