[ Top ] [ Japanese ]

Aki Group

• Accretionary complex
• Deposition (Chert): Early Cretaceous Albian - Late Cretaceous Cenomanian (Radiolarians)
• Deposition (Matrix): Late Cretaceous Campanian (Radiolarians)
• Accretion: Late Cretaceous Campanian

• Sedimentary facies: Marine
• Lithofacies: Mélange facies
• Matrix: Pelitic rocks
• Exotic blocks (Crusts): Basalt, Chert, Sandstone, Acidic tuff, Siliceous rocks, Shale

• Thickness: 1,500 m or thicker
• Upper limit: Thrust fault
• Lower limit: Thrust fault (Aki Tectonic Line, Murotohanto Group)

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

• Distribution: Yanagare seashore, Aki city, Kochi pref.

• Kitamura et al. (2014) Jour. Geol. Soc. Japan, vol.120, no.1, pp.11-21 DOI