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Wangtianping Formation
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Wangtianping Fm base reconstruction

Wangtianping Fm

Period: 
Neoproterozoic

Age Interval: 
Late Sinian (late Ediacaran), Z (41-a)


Province: 
Shaanxi

Type Locality and Naming

West Shaanxi. The Wangtianping Fm was named by the Qinling Party of Regional Geological Survey of Shaanxi Bureau of Geology in 1967. The type section is located at Wangtianping, Mianxian County, Shaanxi Province. The reference section is located around Jianchapu area, Lueyang County, Shaanxi Province.

Synonym: （望天坪组）


Lithology and Thickness

The Wangtianping Fm, with simple lithology dominated by dolomitic limestone, consists of two parts. Lower part is gray black carbonaceous and siliceous dolomite and calcareous schist, phyllite and thin-bedded limestone, 100 m thick. Upper part contains white thick-bedded siliceous dolomite and dolomitic limestone with siliceous bands, 190-210 m thick. The total thickness of the formation ranged from 100 to 390 m.


Lithology Pattern: 
Dolomitic limestone


Relationships and Distribution

Lower contact

The Wangtianping Fm is conformable with the underlying Jiudaoguai Formation.

Upper contact

The top is not exposed.

Regional extent

West Shaanxi. The Wangtianping Formation is only distributed in Wangtianping, Mianxian County and Jianchapu, Lueyang County, Shaanxi Province.


GeoJSON

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Fossils


Age 

Late Sinian (late Ediacaran) on schematic stratigraphic column.

Age Span: 

    Beginning stage: 
Ediacaran

    Fraction up in beginning stage: 
0.5

    Beginning date (Ma): 
586.90

    Ending stage: 
Ediacaran

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
538.80

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

Extracts from The Neoproterozoic Erathem (chapter in Stratigraphic Lexicon of China, draft of 2022) by Gao Linzhi, Ding Xiaozhong, Zhang Chuanheng, Zhang Heng.