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Himekawa Complex (Ujihara, 1985) Kawai and Takeuchi, 2001

Invalid synonym: Himekawa Group, Suganuma Complex

• Accretionary complex
• Accretion: middle Permian (Radiolarians)
• Intruded by: Andesite dikes
• Correlation: Oyasawa Complex

• Sedimentary facies: Marine
• Lithofacies (Itoigawa): Mélange facies, Coherent facies
• Matrix (Itoigawa): Mudstone
• Exotic blocks (Itoigawa, Crusts): Basalt, Limestone, Chert, Siliceous mudstone, Sandstone
• Lithofacies (Itoigawa, Coherent facies): Mudtone
• Lithofacies (Itoigawa, Coherent facies, Minor): Siliceous tuff
• Lithofacies (Kotaki): Coherent facies (Chert-clastic sequence)

• Upper limit: Thrust fault
• Lower limit: Thrust fault

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

• Distribution: Itoigawa city, Niigata pref.
• Fossils: Radiolarians

• Nagamori et al. (2018) Geology of the Itoigawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 75p. (in Japanese with English abstract 3p.)
• Takeuchi et al. (2017) Geology of the Tomari District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 121p. (in Japanese with English abstract 4p.)
• Takeuchi et al. (2015) Jour. Geol. Soc. Japan, vol.121, no.7, pp.193-216, DOI
• Nagamori et al. (2010) Geology of the Kotaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 130p. (in Japanese with English abstract 4p.)
• Takeuchi et al. (2010) Jour. Geol. Soc. Japan, vol.116, Supplement, pp.123-142 DOI