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Matsuyamazawa Formation Onuki, 1966
A member of Takakurayama Group?
- Type locality: Matsuyama creek, Niida river, Yaguki, Yotsukura town, Iwaki city, Fukushima prefecture
- Coherent formation
- Permian?
- Intruded by: Yaguki Granodiorite
- Lithofacies: Interbedded shale and sandstone
- Lithofacies (Minor): Calcareous sandstone, Tuffaceous shale
- Sedimentary structures: Graded bedding
- Takakurayama Group
- [ Upper ]
- ::::::::::::::
- Kashiwadaira? Formation
- --------------
- Motomura Formation
- --------------
- Iriishikura? Formation
- ::::::::::::::
- Matsuyamazawa Formation
- ~~~~~~~~~~~~~~
- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Matsuyama creek, Niida river - Rokusho creek - Sengendaira dam, Yaguki, Yotsukura town, Iwaki city, Fukushima pref.
- Fossils: Crinoids
- Deposit: Host of skarn deposit of Yaguki mine
- Kubo et al. (2002) Geology of the Kawamae and Ide District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 136p. (in Japanese with English abstract 6p.)