Tiekuangliang Fm
Type Locality and Naming
The type section is located at Huoyanxi of Xinglongchang in Zhenba County, Shaanxi. It was named by Shaanxi Regional Geological Survey in 1988, and Cao Xuanduo formally quoted it in 1990.
Lithology and Thickness
Sandstone. It is composed of gray to blackish-gray thin- to medium-bedded pyrite-bearing fine-grained quartz sandstone intercalated with silty slate and pyritic and hematite beds. The thickness is 33.4 m.
Relationships and Distribution
Lower contact
The formation disconformably overlies the Sanyoudong Fm of Upper Cambrian.
Upper contact
The top has a conformably contact with the Panlongshan Fm.
Regional extent
In Zhenba, Gaochuan, of eastern Xixiang area, the lithology is consistent, but varies in the pyrite-bearing interbeds. The thickness decreases from north to south, in Xiagaochuan is 25.4 m thick, in Maoyazi is 35 m, and Panlongshan is only 8.5 m thick.
GeoJSON
Fossils
It yields plant fossils Sublepidodendron, Eolepidodendron and spores.
Age
Depositional setting
Additional Information