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Kuromatagawa Complex (Uemura et al., 1984) Hara and Kashiwagi, 2004
- Type locality: Kuromatagawa-Daiichi dam, Uonuma city, Niigata prefecture
- Accretionary complex
- Deposition (Chert): early Guadalupian, Middle Permian - Late Permian; Early Triassic - Larinian, Middle Triassic; Norian, Late Triassic (Conodonts, Radiolarians)
- Deposition (Siliceous shale): late Aalenian, Middle Jurassic (Radiolarians)
- Deposition (Shale): late Bathonian, Middle Jurassic - Oxfordian, Late Jurassic (Radiolarians)
- Accretion: Middle Jurassic
- Intruded by: Oyu Granite, Kuromatagawa Granite
- Sedimentary facies: Marine
- Lithofacies (Upper): Interbedded sandstone and shale, Greenstones, Chert
- Lithofacies (Middle): Coherent facies
- Lithofacies (Middle): Interbedded sandstone and shale
- Lithofacies (Lower): Chert
- Lithofacies (Lower, Minor): Greenstones, Shale
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Kuromatagawa-Daiichi dam - Uchihinoki creek - Hinoki creek - Kuromata river - Akashiba creek - Okuma creek, Uonuma city, Niigata pref.
- Fossils (Chert, Conodonts): Diplognathodus? oertlii, Epigondolella abneptis, Gondolella sp., Hindeodella sp., Misikella hernsteini, Misikella posthernsteini, Neogondolella constricta, Neogondolella foliata inclinata, Neogondolella cf. idahoensis, Neogondolella navicula navicula, Neogondolella regale?, Neogondolella serrata, Neogondolella cf. serrata postserrata, Neospathodus microdus
- Fossils (Chert, Radiolarians): Cryptostephanidium sp., Eptingium manfredi, Follicucullus sp., Hozmadia sp., Kashiwara? sp., Latentibifistula sp., Parentactinia nakatsugawaensis, Pentactinocarpus tetracunthus, Plafkerium? sp., Pseudostylosphaera coccostyla, Pseudostylosphaera japonica, Spinotriassocampe sp., Staurosphaera sp., Triassocampe deweveri, Triassocampe myterocorys
- Fossils (Siliceous shale, Radiolarians): Hsuum hisuikyoense, Laxtorum? sp., Stichocapsa sp., Tricoloapsa? spp., Unuma cf. echinatus
- Fossils (Shale, Radiolarians): Hsuum sp. Parvicingula? sp., Protunuma sp., Stichocapsa cf. himedaruma, Tricolocapsa cf. plicarum, Tricolocapsa spp.
- Takahashi et al. (2004) Geology of the Suhara District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 80p. (in Japanese with English abstract 4p.)