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Minamihirasawa Tuff Fujioka, 1959
One of the host of Hashimoto oil field and Nakagawa oil field.
Invalid synonym: Anzenji Tuff, Hirasawa Tuffaceous Sandstone Formation
- Type locality: Minamihirasawa, Funagawaminato, Oga city, Akita prefecture
- Coherent formation
- Pliocene (3.3, 2.7 Ma, FT)
- Lithofacies: Pumice volcanic lapilli tuff
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Minamihirasawa - Anzenji temple, Funagawaminato, Oga city, Akita pref.
- Fujimoto et al. (2008) Jour. Geol. Soc. Japan, vol.114, Supplement, pp.51-74 DOI