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Shiwangzhuang Formation
Click to display on map of the Ancient World at:
Shiwangzhuang Fm base reconstruction

Shiwangzhuang Fm

Period: 
Neoproterozoic

Age Interval: 
Late Qingbaikuan (late Tonian), Qb (26-b)


Province: 
Shandong

Type Locality and Naming

North-central Shandong. The Shiwangzhuang Fm was named by the Team of Phosphorites of the Comprehensive Brigade of the Bureau of Shandong Geology (1979) and introduced by You Wencheng (1989).. The type section is located in Heishanguan villege, North-Eastwards 300 m, Wutu Town, Changle County, Shandong Province. Coordinate: E119º14´00´´; N36º33´00´´. Uppermost formation in Tumen Gr.

Synonym: （石旺庄组）


Lithology and Thickness

The Shiwangzhuang Fm consists mainly of sandy limestone, limestone and dolomite with molar-tooth structures, interbedded with few shales and with stromatolites. It is 20-200 m thick.

[Figure: The Stratigraphic column of the Tumen Gr (made by Zhang Chuanheng)]


Lithology Pattern: 
Sandy limestone


Relationships and Distribution

Lower contact

It is conformable onto the underlying Fulaishan Fm

Upper contact

It is disconformably overlain by the Cambrian Changqing Gr

Regional extent

North-central Shandong. It is developed in Anqiu, Weifang and Yishui, Shandong Province.


GeoJSON

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Fossils


Age 

Late Qingbaikuan (late-middle Tonian) on schematic stratigraphic column.

Age Span: 

    Beginning stage: 
Tonian

    Fraction up in beginning stage: 
0.5

    Beginning date (Ma): 
860.00

    Ending stage: 
Tonian

    Fraction up in the ending stage: 
0.65

    Ending date (Ma):  
818.00

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.