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K4

• Accretionary complex
• middle - late Eocene

• Sedimentary facies: Marine
• Lithofacies: Conglomerate, Sandstone-dominant interbedded sandstone and mudstone
• Lithofacies (Lower, Minor): Silty mudstone, Gravel-bearing mudstone
• Sedimentary structures: Cross stratification

• Thickness: 500 - 850 m

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

• Distribution: Takijiri - Kurisugawa - Tondagawa river - Kajiyagawa - Yunomine - Ukegawa, Tanabe city, Wakayama pref.
• Fossils (Shellfishes): Acila (Truncacila) sp., Clinocardium? sp., Macoma optiva, Portlandia (Portlandia) watasei

• Suzuki et al (1979) Geology of the Kurisugawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 54p. (in Japanese with English abstract 5p.)