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Nagasakihana Formation

• Type locality: Choshi city, Chiba prefecture
• Coherent formation
• Cretaceous

• Upper limit: Unconformity (Senninzuka Formation)
• Lower limit: Conformity

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

• Distribution: Choshi city, Chiba pref.

• Kashiwagi et al. (2013) Jour. Geol. Soc. Japan, vol.119, no.9, pp.647-652 DOI
• Tazawa and Hasegawa (2007) Jour. Geol. Soc. Japan, vol.113, no.8, pp.406-416 DOI