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Nishiki Group Nishimura and Nureki, 1966

• Type locality: Nishiki town, Iwakuni city, Yamaguchi prefecture
• Accretionary complex
• Early - Middle Permian (Radiolarians)
• Intruded by: Hiroshima Granites

• Sedimentary facies: Marine
• Metamorphic facies: Prehnite-Pumpellyite
• Lithofacies: Sandstone, Mudstone
• Lithofacies (Minor): Basalt, Limestone, Chert, Siliceous mudstone, Conglomerate, Felsic tuff

• Thickness: ca. 2,900 - 3,900 m
• Upper limit: Unconformity ( Kanmon Group, Shunan Group, Abu Group, Higuchi Group, Hikimi Group)
• Lower limit: Kitayama Thrust (Tsuno Group)

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

• Distribution: Tashirogawa river - Funotanigawa river - Hogo - Shogetoge pass - Uzuka - Nishikurosawa - Nishiki town, Iwakuni city, Yamaguchi pref.; Kano - Suma, Shunan city, Yamaguchi pref., Muikaichi, Yoshika city, Kanoashi county, Shimane pref.; Muikaichi, Yoshika city, Kanoashi county, Shimane pref.
• Fossils (Radiolarians): Follicuculus cf. monacanthus, Follicuculus scholasticus, Latentifistula? sp., Latentifistulidae gen. et sp. indet., Nazarovispongus? sp., Patulibracchiidae gen. et sp. indet., Pseudoalbaillella aff. longicornis

• Nakagawa and Wakita (2016) Jour. Geol. Soc. Japan, vol.122, no.12, pp.659-664, DOI
• Nagata et al. (2015) Jour. Geol. Soc. Japan, vol.121, no.2, pp.59-69 DOI
• Imaoka et al. (2012) Jour. Geol. Soc. Japan, vol.118, no.12, pp.782-800 DOI
• Takahashi et al. (1989) Geology of the Tsuda District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 56p. (in Japanese with English abstract 4p.)
• Higashimoto et al. (1986) Geology of the Otake District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 70p. (in Japanese with English abstract 6p.)