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Kamigongendoyama Complex (Uemura and Takashima, 1985) Takahashi et al., 2004

Invalid synonym: Kamigongendoyama Group, Himizo Group

• Type locality: Mount Kamigongendo, Uonuma city, Niigata prefecture
• Accretionary complex
• Deposition (Chert): Middle - Late Triassic (Conodont, Radiolarians)
• Deposition (Shale): Middle - Late Jurassic (Radiolarians)
• Accretion: Middle Jurassic
• Intruded by: Tadamigawa Granites, Oyu Granite, Kuromatagawa Granite, Quartz porphyry dyke
• Correlation: Koide Complex

• Sedimentary facies: Marine
• Lithofacies: Mélange facies
• Matrix: Mudstone
• Exotic blocks (Crusts): Chert, Greenstones, Sandstone, Interbedded sandstone and shale, Limestone, Conglomerate

• Distribution (East-West): ca. 8 km
• Distribution (South-North): ca. 17 km
• Upper limit: Abut unconformity (Nishimyo Formation), Unconformity (Okura Andesite Member, Matsukawa Formation)

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

• Distribution: Mount Kamigongendo - Uono river, Uonuma city, Niigata pref.; Kenomatasawa river, Sumon, Uonuma city, Niigata pref.; Shiire creek, Tadami river, Uonuma city, Niigata pref.; Mizunashi river, Yamato town, Minamiuonuma city, Niigata pref.
• Fossils (Chert, Conodonts): Gondolella sp., Paragondolella navicula navicula
• Fossils (Chert, Radiolarians): Eptingium sp., Hozmadia? sp., Pseufostylosphaera? sp., Triassocampe sp.
• Fossils (Shale, Radiolarians): Archaeodictyomitra sp., Eucyrtidiellum? sp., Hsuum? sp., Stichocapsa spp., Tricolocapsa sp.

• 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.)
• Chihara and Komatsu (1992) Geology of the Hakkaisan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 107p. (in Japanese with English abstract 8p.)
• Yanagisawa et al. (1986) Geology of the Ojiya District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 177p. (in Japanese with English abstract 6p.)
• Yanagisawa et al. (1985) Geology of the Tokamachi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 104p. (in Japanese with English abstract 6p.)