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Fulaishan Formation
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Fulaishan Fm base reconstruction

Fulaishan Fm

Period: 
Neoproterozoic

Age Interval: 
Middle Qingbaikuan (middle Tonian), Qb (26-b)


Province: 
Shandong

Type Locality and Naming

North-central Shandong. The Fulaishan Fm was named by the Team of Phosphorites of the Comprehensive Brigade of the Bureau of Shandong Geology (1960) and introduced by Zhang Zengqi (1996). The type section is located in Fulaishan Hill, Juxian County, Shandong Province. Coordinate: E118º43´00´´; N35 º 36´00´´. Upper-middle formation in Tumen Gr

Synonym: （佛来山组）

.


Lithology and Thickness

The Fulaishan Fm consists mainly of fine sandstone to siltstone interbedded with a few shales and sandy-muddy limestone. It is 30-180 m thick.

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


Lithology Pattern: 
Sandstone


Relationships and Distribution

Lower contact

Conformable on the Tongiazhuan Fm.

Upper contact

It is conformably overlain by the Shiwangzhaung Fm.

Regional extent

North-central Shandong.


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[117.94,36.92],[117.94,36.95],[118.51,36.98],[118.88,36.88],[119.33,36.84],[119.72,36.87],[119.79,36.67],[120.01,36.44],[120.31,36.23],[119.94,36.02],[119.56,35.84],[119.19,35.46],[118.8,35.01],[118.62,34.59],[118.45,34.19],[118.35,34.23],[118.07,34.42],[117.51,34.52],[117.2,34.64],[116.86,34.77],[116.46,34.98],[116.25,35.13],[116.15,35.43],[116.06,35.79],[116.17,36.17],[116.62,36.46],[117.06,36.78],[117.94,36.92]]]]}}

Fossils

No details given.


Age 

Middle Qingbaikuan (middle Tonian) on schematic stratigraphic column.

Age Span: 

    Beginning stage: 
Tonian

    Fraction up in beginning stage: 
0.4

    Beginning date (Ma): 
888.00

    Ending stage: 
Tonian

    Fraction up in the ending stage: 
0.5

    Ending date (Ma):  
860.00

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.