Zahuaigou Fm
Type Locality and Naming
The reference section is located in the Zhongbugesu area in the eastern part of the Shiguai region, Baotou City, Inner Mongolia. It was named by Li Xingxue et al. in 1953.
Lithology and Thickness
Clastics. Composed of grey and black carbonaceous shale, clayey shale, medium granular sandstone and coarse-grained sandstone, intercalated with coal seams, claystone, fine-grained sandstone and sandy shale; with a thickness of 80 m.
Relationships and Distribution
Lower contact
Conformable contact with the underlying Shuanmazhuang Fm
Upper contact
Conformable contact with the overlying Shiyewan Fm
Regional extent
Distributed restrictedly in the area extending from the Naobaogou to the Zhongbugesu in the eastern part of the Shiguai region, Baotou City, with no distinct variation in lithology, and with its being thicker in the east and thinner in the west.
GeoJSON
Fossils
Yields plant fossils (phytolites) such as Alethopteris sp., Pecopteris sp., Cordaites principalis, etc.
Age
Depositional setting
It is interpreted as a lake-swamp facies
Additional Information