Toyonishi Group

Coherent formation
Late Jurassic, Tithonian - Early Cretaceous, Hauterivian

Sedimentary facies: Marine, Fluvial
Sedimentary facies (Upper): Delta lagoon
Sedimentary facies (Middle): Shallow marine
Sedimentary facies (Lower): Fluvial
Lithofacies: Conglomerate, Sandstone

Upper limit: Unconformity (Wakino Subgroup)
Lower limit: Unconformity (Toyora Group)

Toyonishi Group
[ Upper ]
~~~~~~~~~~~~~~
Yoshimo Formation
--------------
Kiyosue Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Tabe basin, Yamaguchi pref.

Kawamura (2010) Jour. Geol. Soc. Japan, vol.116, no.1, pp.27-44 DOI