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Sipai Formation

Sipai Fm

Period: 
Devonian

Age Interval: 
D13, Emsian (late Early Devonian)


Province: 
Guangxi

Type Locality and Naming

The type section is located at Malucun Village, south of Sipai Town, Luzhai County, Guangxi. It was named by Feng Jinlan in 1929.

Synonym: Sipai Shale


Lithology and Thickness

Shale. The formation, 149 m thick, is characterized by yellowish-green calcareous shale, siltstone and sandy mudstone intercalated with thin-bedded sandstone and lenses of limestone.


Lithology Pattern: 
Continental marl


Relationships and Distribution

Lower contact

Its lower boundary is unclear. But next older unit on this chart column (Hongfei Hou, Apr 2021) is Luma Fm

Upper contact

Next higher unit on this chart column (Hongfei Hou, Apr 2021) is Yingtang Fm

Regional extent

The formation is distributed at the area of Luzhai and Jinxiu.


GeoJSON

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Fossils

The formation contains the Otospirifer-Athyrisina Assemblage Zone in the lower part and the Euryspirifer shujiapingensis Acme Zone in the upper part.


Age 

Emsian (late Early Devonian)

Age Span: 

    Beginning stage: 
Eifelian

    Fraction up in beginning stage: 
0.25

    Beginning date (Ma): 
392.05

    Ending stage: 
Eifelian

    Fraction up in the ending stage: 
0.4

    Ending date (Ma):  
390.70

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

(Xian Shiyuan)