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Pingyipu Gr
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Pingyipu Gr base reconstruction

Pingyipu Gr

Period: 
Devonian

Age Interval: 
D11 (70), Lochkovian (Early Devonian)


Province: 
Sichuan

Type Locality and Naming

The type section is located at Pingyipu of Pingwu County, Sichuan.

It was named by Zhao Yazeng, Huang Jiqing in 1931.


Lithology and Thickness

Sandstone. The Group is defined as a set of purplish-red and grayish-green quartz sandstone, intercalated with silty mudstone.

The Group is newly divided into the Guixi Fm, Muerchang Fm, Guanyingmiao Fm and Guanshanpo Fm in the Jiangyou area – see those entries for details. It is more than 3000 m thick in total.


Lithology Pattern: 
Clayey sandstone


Relationships and Distribution

Lower contact

Its lower Guixi Fm overlies unconformably on Silurian Maoxian Gr

Upper contact

Its upper Guanshanpo Fm is beneath marine mudstone and siltstone with brachiopod Orientospirifer fauna” of the Bailiuping Fm

Regional extent


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[104.82,32.52],[103.31,31.15],[104.36,30.74],[105.65,32.27],[104.82,32.52]]]]}}

Fossils

The group yields Yunnanolepis, Macropetalichthys, Limulus, bivalve, ostracoda, inarticulata brachiopods, plant and trace fossils.


Age 

Lochkovian (Early Devonian) (and lower Pragian, if conformably overlain by the Bailiuping Fm

Age Span: 
S

    Beginning stage: 
Lochkovian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
419.00

    Ending stage: 
Pragian

    Fraction up in the ending stage: 
0.5

    Ending date (Ma):  
411.46

Depositional setting

Coastal facies


Depositional pattern:  


Additional Information

The Group is newly divided into the upward succession of the Guixi Fm, Muerchang Fm, Guanyingmiao Fm and Guanshanpo Fm units in the Jiangyou area.


Compiler:  

(Wang Shitao)