Jiujuzi Fm
Type Locality and Naming
The type section is located at Shajingou Nanshan, Aohan Banner, Inner Mongolia. It was named by the No. 2 Inner Mongolian Party of Regional Geological Survey in 1965.
Lithology and Thickness
Claystone and Sandstone. Composed of black slate and clayey slate, intercalated with conglomerate and purple-red medium- to fine-grained feldspar-rich sandstone and grit, locally with coal seams. They are interbedded in unequal thickness, in which 4 rhythmites are formed from conglomerate to black slate. Exposed thickness 385 m.
Relationships and Distribution
Lower contact
Conformable contact with the underlying Jiadaogou Fm
Upper contact
Uncertain: the upper boundary is unclear
Regional extent
Distributed at Jiadaogou, Fanjiazhangzi, Daogelangyingzi, Sanguanyingzi and Maodaigou of Anhan Banner, Xiangyangsuo of Hure Banner, Siziwang Banner, Haerdele, etc
GeoJSON
Fossils
Containing the early Cathysian Flora Neuropteris pseudovata-Lepidodendron tachingshanense assemblage, including L. szeianum, Tingia carbonica, Callipteridium sp., Sphenobaiera? sp., etc.
Age
Depositional setting
It is interpreted as continental deposits
Additional Information