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Yasukawa Formation

• Type locality: Yasukawa river, Tanabe city, Wakayama prefecture
• Accretionary complex
• middle - late Eocene

• Sedimentary facies: Marine
• Lithofacies: Mudstone, Interbedded sandstone and mudstone
• Lithofacies (Minor): Sandstone, Conglomerate
• Paleocurrent (Top): from North to South
• Paleocurrent (Lower): from West to East

• Upper limit: Conformity (Uchikoshi Formation)

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

• Distribution: Yasukawa river, Tanabe city, Wakayama pref.; Taiko - Otogawa river, Kozagawa city, Higashimuro county, Wakayama pref.

• Tokuoka et al (1981) Geology of the Ryujin District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 69p. (in Japanese with English abstract 6p.)
• 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.)