Nomura Formation

Coherent formation
Miocene

Lithofacies: Diatomaceous mudstone
Lithofacies (Minor): Tephra

Upper limit: Transitional (Tokonami Formation)
Lower limit: Conformity (Tenman Formation)

Tsugawa, Niigata pref.
[ Upper ]
?--?--?--?--?-
Tokonami Formation
--------------
Nomura Formation
--------------
Tenman Formation
--------------
Otani Formation
--------------
Tonoiri Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Tsugawa, Aga city, Higahikanbara county, Niigata pref.
Tephra: Otbt, Stm, Tmhq, Otpm

Hiranaka et al. (2009) Jour. Geol. Soc. Japan, vol.115, no.4, pp.177-186 DOI