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Manger Formation
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Manger Fm base reconstruction

Manger Fm

Period: 
Devonian

Age Interval: 
D11-D12 (1), Lochkovian to Pragian (Early Devonian)


Province: 
Xinjiang

Type Locality and Naming

Northwest Junggar. The type section is located at Mangkelu gully, south slope of Sharburtishan Mt, east of Hoboksar County, the Xinjiang Uygur Autonomous Region. It was named by the Joint Stratigraphical Branch Team between the Chinese Academy of Geological Sciences and the Xinjiang Team of Regional Geological Survey in 1973. Hou Hongfei et al. quoted it formally in 1979.

Synonym: Mangeer Fm or Manggeer Fm (as spelled on other Lexicon charts)


Lithology and Thickness

Shale, tuffaceous sandstone. It is composed of grayish-green to yellowish-green calcareous shale and calcareous tuffaceous sandstone, intercalated with clayey limestone and limestone nodules in the upper part, and is 267 m thick.


Lithology Pattern: 
Shallow-marine marl


Relationships and Distribution

Lower contact

It is in conformable contact with the underlying Wutubulak Fm of Silurian.

Upper contact

It is in conformable contact with the overlying Mangkelu Fm.

Regional extent

Its distribution is limited in middle part of south slope of Shaburtishan Mt.


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[86.26,48.48],[82.04,47.42],[82.44,45.58],[88.19,44.96],[89.78,46.89],[86.26,48.48]]]]}}

Fossils

It yields trilobites Odontochile sinensis, Calymenia sp.; brachiopods Aulacella sp., ?Resserella sp. and bivalve.


Age 

Lochkovian to Pragian (Early Devonian)

Age Span: 
S

    Beginning stage: 
Lochkovian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
419.00

    Ending stage: 
Emsian

    Fraction up in the ending stage: 
0.2

    Ending date (Ma):  
407.27

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

(Hou Hongfei)