Shiping Fm
Type Locality and Naming
The type section is located at north bank of Qianyou River, Shiping Village of Zashui County, Shaanxi province. It was named by Yang Zihua in 1991.
Lithology and Thickness
Calcareous sandstone. The Formation is subdivided into three parts.
Lower part, 9 m thick, consists of calcareous, dolomitic conglomerate.
Middle part, 44.14 m thick, is composed of feldspar quartz sandstone and pebbly calcareous sandstone.
Upper part, 17.16 m thick, consists of thin- to medium-bedded arenite and dolomite intercalated with thin-bedded calcareous sandstone, siltstone and pebbly sandstone, and yields brachiopoda Emanuella takuanensis, Schizophria sp., and bivalve Entomaria sp., Naticopsis sp.
Relationships and Distribution
Lower contact
It rests unconformably on the dolomite of Cambrian-Ordovician.
Upper contact
Regional extent
The Formation is only exposed around the Mihuanzen Oldland. Southward to Gudaoling Village, it is about 212 m thick, and is characterized by dolomitic conglomerate with sandy limestone in lower part, sandy limestone with fine-grained sandstone in the middle part, and silty slate with oolitic limestone in the upper part.
GeoJSON
Fossils
The upper part yields brachiopoda Emanuella takuanensis, Schizophria sp., and bivalve Entomaria sp., Naticopsis sp.
Age
Depositional setting
Additional Information