Youra Formation

[ Top ] [ Japanese ]

Youra Formation

Type locality: Youra, Tsukumi city, Oita prefecture

Sedimentary facies: Marine
Lithofacies: Terrigenous clastic rocks (Sandstone, Mudstone)

Upper limit: Thrust fault
Lower limit: Unknown

Youra Unit
[ Upper ]
/--/--/--/--/-
Youra Formation
?--?--?--?--?-
Enoura Formation
/--/--/--/--/-
[ Lower ]

Southern Chichibu Belt (Saiki, Oita pref.)
[ Upper ]
/--/--/--/--/-
Tsukumi Unit = Ohirayama Unit
/--/--/--/--/-
Youra Unit = Togano Unit
/--/--/--/--/-
Konose Unit = Sanbosan Unit
/--/--/--/--/-
[ Lower ]

Southern Chichibu Belt
[ Upper ]
/--/--/--/--/-
Ohirayama Unit
/--/--/--/--/-
Togano Unit
/--/--/--/--/-
Sanbosan Unit
/--/--/--/--/-
[ Lower ]

Chichibu Belt
[ Upper ]
/--/--/--/--/-
Kurosegawa Belt
/--/--/--/--/-
Northern Chichibu Belt
/--/--/--/--/-
Southern Chichibu Belt
/--/--/--/--/-
[ Lower ]

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

Distribution: Youra, Tsukumi city, Oita pref.

Tomimatsu et al. (2016) Jour. Geol. Soc. Japan, vol.122, no.6, pp.267-273, DOI