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Northern Chichibu Belt

Invalid synonym: Kamiyakawa Formation, Shirakidani Group, Ananaigawa Group

• Type locality: Chichibu region, Saitama prefecture
• Accretionary complex
• Deposition: Early - Middle Jurassic

• Sedimentary facies: Marine

• Thickness (Saitama pref. - Gunma pref.): 2,800 m or thicker
• Upper limit: Thrust fault
• Lower limit: Mikabu Tectonic Line, Aridagawa Tectonic Line (Wakayama) (Sanbagawa Belt), Miyagawa Thrust (Mie) (Southern Chichibu Belt)

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

• Distribution: Kanto - Akaishi mountains - Shima peninsula - Kii peninsula, southern Shikoku - southern Kyushu
• Distribution: Soyamadani river - Jintsudani river, Kamiyama city, Myozai county, Tokushima pref.; Ouchiyama, Taiki city, Watarai county, Mie pref.
• Fossils: Northern Tethyan

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