Nyugawa Formation

Coherent formation
Holocene

Sedimentary facies: Marine
Sedimentary facies: Delta
Lithofacies (Upper): Sands, Sandy gravels
Lithofacies (Middle): Clay, Silt
Lithofacies (Lower): Sands, Sandy gravels

Thickness: 20 m or thinner
Lower limit: Unconformity, partly abut (Syuso Formation)

Saijo plain, Ehime pref.
[ Upper ]
--------------
Nyugawa Formation
~~~~~~~~~~~~~~
Syuso Formation
--------------
Okamura Formation
?--?--?--?--?-
[ Lower ]

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

Distribution: Saijo plain, Ehime pref.
Fossils (Middle): Shellfishes

Kawamura and Nishiyama (2019) Jour. Geol. Soc. Japan, vol.125, no.1, pp.87-105 DOI