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Kadoma Complex (Ehiro et al., 1986) Kawamura et al., 2013

Invalid synonym: Kadoma Formation, Kirinai Formation

• Type locality: Hei river, Kadoma, Miyako city, Iwate prefecture
• Accretionary complex
• Deposition (Chert): Middle - Late Triassic (210 Ma, U-Pb; Radiolarians)
• Deposition (Clastic rocks): Middle Jurassic
• Accretion: Jurassic (Fossils)
• Correlation: Kirinai Subcomplex of Takadakimori Complex, Nakatsugawa Complex

• Sedimentary facies: Marine
• Lithofacies: Mélange facies, Broken facies
• Matrix (Pelitic rocks): Interbedded mudstone and siliceous rocks, Interbedded mudstone and sandstone
• Matrix (Pelitic rocks, Minor): Mudstone, Siliceous tuff
• Exotic blocks (Crusts, Slabs): Chert, Sandstone, Basaltic lava, Basaltic pyroclastic rocks
• Exotic blocks (Crusts, Minor): Dolerite

• Thickness (Apparently): ca. 7,500 m or thicker

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

• Distribution: Hei river, Sariishi - Kadoma, Miyako city, Iwate pref.; Kurosawa creek - Matsukusa creek - Iwai creek - Kuzube creek, Hei river, Miyako city, Iwate pref.; Oyama river, Miyako city, Iwate pref.
• Fossils: Radiolarians (Triassocampe? spp.)

• Uchino (2017) Jour. Geol. Soc. Japan, vol.123, no.11, pp.977-982 DOI
• Kawamura et al. (2013) Geology of the Hayachine San District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 101p. (in Japanese with English abstract 4p.)