[ Top ] [ Japanese ]

Hongo Formation

• Type locality: Gifu prefecture
• Coherent formation
• First Seto Inland Sea
• Sedimentary basin in island arc
• Miocene (19 - 18 Ma; 18.2 - 16.4 Ma, FT)
• Contemporaneous heterotopic facies: Tsukiyoshi Member, Togari Member, Yamanouchi Member
• Correlation: Agi Formation

• Sedimentary facies: Freshwater
• Lithofacies: Interbedded sandstone, siltstone and mudstone, Conglomerate, Pumice tuff

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

• Distribution: Gifu pref.
• Tephra: MZ-1 (16.4 Ma, FT), Hosokute Lapilli Tuff Bed (17.7 Ma, FT), Hiyoshigawa Tuff Bed (16.6 Ma, FT), MZ-2 (18.2 Ma, FT)

• Sasao et al. (2018) Jour. Geol. Soc. Japan, vol.124, no.2, pp.141-150 DOI
• Sasao et al. (2011) Jour. Geol. Soc. Japan, vol.117, no.8, pp.476-481 DOI