[ Top ] [ Japanese ]
Kuboma Formation
Invalid synonym: Kayakura Formation
- Type locality: Kuboma, Yamamoto city, Watari county, Miyagi prefecture
- Coherent formation
- Pliocene
- Correlation: Mukaiyama Formation?
- Lithofacies (Top): Siltstone
- Lithofacies: Conglomerate, Sandstone, Mudstone
- Lithofacies (Minor): Lignite, Pumice tuff
- Lithofacies (Basal): Conglomerate
- Kakuda, Miyagi pref.
- [ Upper ]
- --------------
- Yamashita Formation
- --------------
- Kuboma Formation
- ~~~~~~~~~~~~~~
- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Kuboma - Mount Shinzan - Asohara, Yamamoto city, Watari county, Miyagi pref.; Osawa pass, Marumori city, Igu county, Miyagi pref.; Mount Jizomori, Shinchi city, Soma county, Fukushima pref.
- Fossils (Shellfishes): Dosinia sp., Glycymeris sp., Ostrea sp., Tellina sp.
- Fossils (Plants): Fagus crenata, Juglans sp., Quercus sp., Ulmus sp.
- Fujita et al. (1988) Geology of the Kakuda District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 99p. (in Japanese with English abstract 9p.)