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Tectonic Features

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Wuli Gr

Wuli Gr


Period: 
Permian

Age Interval: 
P3 (58), late Lopingian Epoch (latest Permian)


Province: 
Qinghai

Type Locality and Naming

The type section is located in the vicinity of the Kaixinling Coal Mine of the Zhiduo County, Qinghai Province. It was named by the Wuli Coal Prospecting and Reconnaissance Party under the Northwest China Coal Prospecting Administration in 1956, and was first cited by Yin Zanxun (1958) in the Additional Enlarged Edition to the "Regional Stratigraphic Chart of China (Draft)". Contains a lower Nayixiong Fm and an upper Qamarniu Fm).


Lithology and Thickness

Clastics and Coal. Composed of carbonaceous shale, siltstone, sandstone, limestone and coal seams. Its thickness is over 1255 m.


Lithology Pattern: 
Sandstone


Relationships and Distribution

Lower contact

Uncertain contact with the underlying Kaixinling Gr (its uppermost unit is the Zhageyong), where there are missing such sedimentary strata as those of the Capitanian and lower Wuchiapingian Stage.

Upper contact

Regional extent

Distributed in the areas of Zhaliwaco-Mugeco, Kaixinling, Zhaqing Country and Dongmaolong.


GeoJSON

null

Fossils

Yields Brachiopods such as Oldhamina, Squamularia, Leptodus, Neowellerella, Hemiptychina, Enteletina, etc.; Plant fossils (phytolites) such as Lobatannularia, Neuropteridium, Ptychocarpus, Lepidodendron, Gigantonoclea, Gigantopteris.


Age 

late Lopingian Epoch (latest Permian)

Age Span: 

    Beginning stage: 
Wuchiapingian

    Fraction up in beginning stage: 
0.5

    Beginning date (Ma): 
256.89

    Ending stage: 
Changhsingian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
251.90

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

Wang Yujing