[ Top ] [ Japanese ]

Takkobu Member (Okazaki et al., 1966)

Invalid synonym: Takkobu Formation

• Coherent formation
• early Pleistocene

• Sedimentary facies: Marine
• Depth of water: Shallow
• Lithofacies: Sand, Gravel, Volcaniclastics

• Thickness: 20 m
• Upper limit: Lithofacies boundary (more volcaniclastics than Toro Formation and produces fossils of family Laganidae.)

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

• Distribution: Hororo river, Nakahororo, Tsurui city, Akan county, Hokkaido
• Fossils: Laganidae gen. et sp. indet

• Hasegawa et al. (2011) Jour. Geol. Soc. Japan, vol.117, no.12, pp.686-699 DOI