Atsu Group

Type locality: Yamaguchi prefecture
Coherent formation
Triassic

Upper limit: Unconformity (Ushiroyama Andesite Member)
Lower limit: Unconformity (Tsunemori Formation)

Atsu Group
[ Upper ]
~~~~~~~~~~~~~~
Kumakura Formation
?--?--?--?--?-
Hongo Formation
~~~~~~~~~~~~~~
[ Lower ]

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

Distribution: Yamaguchi pref.

Maeda and Oyama (2019) Jour. Geol. Soc. Japan, vol.125, no.8, pp.585-594 DOI
Tazawa et al. (2009) Jour. Geol. Soc. Japan, vol.115, no.4, pp.168-176 DOI