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)

Yasukawa Formation
[ Upper ]
--------------
Y2
--------------
Y1
/--/--/--/--/-
[ Lower ]

Muro Group (North)
[ Upper ]
/--/--/--/--/-
Kogawa Formation
--------------
Uchikoshi Formation
--------------
Yasukawa Formation
/--/--/--/--/-
[ Lower ]

Shimanto Belt (Wakayama pref.)
[ Upper ]
/--/--/--/--/-
Koyasan Group = North Shimanto
/--/--/--/--/-
Hidakagawa Group = North Shimanto
/--/--/--/--/-
Nyunokawa Formation
/--/--/--/--/-
Otonashigawa Group
/--/--/--/--/-
Muro Group
/--/--/--/--/-
[ Lower ]

------ 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.)
Tateishi et al. (1979) Geology of the Esumi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 65p. (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.)