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Huanglian Formation
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Huanglian Fm base reconstruction

Huanglian Fm

Period: 
Neoproterozoic

Age Interval: 
Early Sinian (early Ediacaran), Z (67)


Province: 
Fujian

Type Locality and Naming

Southwest Fujian near Jiangxi. The Huanglian Fm was named by the Fujian Compiling Group for Regional Stratigraphic Scale in 1979. The typical section is located in Huanglian village 11 km southwest of Changting City, Fujian Province.


Lithology and Thickness

The formation is dominated by gray and gray-white bedded chert intercalated with greenish-gray banded chert, phyllite, slate and thin-bedded meta-sandstone. The clastic rocks have horizontal beddings and the chert layers show occasional ripple marks of shallow water. The total thickness varies from 260 to 360 m.


Lithology Pattern: 
Chert


Relationships and Distribution

Lower contact

It rests conformably on the underlying Nanyan Fm. These two formations always occur together.

Upper contact

Underlies lower Cambrian according to schematic stratigraphy chart; but previous Lexicon said it is unconformably overlain by Devonian.

Regional extent

Southwest Fujian.


GeoJSON

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Fossils


Age 

Late Sinian (late Ediacaran),

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.