Mitogawa Formation

Type locality: Kobushigawa river - Hisoharagawa river, Kozagawa city, Higashimuro county, Wakayama prefecture
Accretionary complex
middle - late Eocene

Sedimentary facies: Marine
Lithofacies: Sandstone, Sandstone-dominant interbedded mudstone and sandstone
Lithofacies (Minor): Mudstone, Mudstone-dominant interbedded mudstone and sandstone

Thickness: 1,500 - 2,700 m
Upper limit: Conformity (Shimotsuyu Formation)
Lower limit: Conformity (Wabuka Formation)

Mitogawa Formation
[ Upper ]
--------------
M3
--------------
M2
--------------
M1
/--/--/--/--/-
[ Lower ]

Muro Group (South)
[ Upper ]
/--/--/--/--/-
Shimotsuyu Formation
--------------
Mitogawa Formation
--------------
Wabuka 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: Kobushigawa river - Hisoharagawa river - Kurumidani valley - Tachiaigawa river - Soinogawa river - Oyatanigawa river - Misatodani valley, Kozagawa city, Higashimuro county, Wakayama pref.; Ogama - Kamitsuzura - Kurigaitogawa river - Nishinogawa river - Susamigawa river - Satono - Kuchiwabuka - Esumigawa river - Okauchigawa river - Fukuidani valley - Sumikidani valley, Susami city, Nishimuro county, Wakayama pref.; Yamate, Nachikatsuura city, Higashimuro county, Wakyama pref.
Fossils: Bivalves

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.)