[ Top ] [ Japanese ]
Uppermost
Synonym: Shibusan Formation (Matsui and Matsuzawa, 1985), Nakazato Formation (Matsui and Matsuzawa, 1985)
Invalid synonym: Kumaushi Formation, Upper Otofuke Formation
- Type locality: Tokachi plain, Hokkaido
- Coherent formation
- Pleistocene
- Lithofacies (Top): Sandstone, Conglomerate
- Lithofacies (Upper): Mudstone
- Lithofacies (Middle): Kamishikaribetsu Tuff
- Lithofacies (Lower): Interbedded coal-bearing siltstone, sandstone, conglomerate and mudstone
- Lithofacies (Bottom): Meto Tuff
- Thickness: ca. 150 m
- Upper limit: Unconformity
- Lower limit: Bottom of Meto Tuff
- Lower limit: Unconformity (Upper)
- Ikeda Group
- [ Upper ]
- ~~~~~~~~~~~~~~
- Uppermost
- --------------
- Upper
- --------------
- Lower
- ~~~~~~~~~~~~~~
- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Takashimizu and Oka (2007) Jour. Geol. Soc. Japan, vol.113, Supplement, pp.65-79 DOI