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Tarbagete Formation
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Tarbagete Fm base reconstruction

Tarbagete Fm

Period: 
Devonian

Age Interval: 
D22 (4), Givetian (late Middle Devonian)


Province: 
Inner Mongolia

Type Locality and Naming

LOCAL. The type section is located at west mountain Tarbagete of east Wuchumuqinqi, Inner Mongolia Autonomous Region. It was named by Inner Mongolia Team of Regional Geological survey in 1973 during mapping of the East Wuchumuqinqi Geological Map (scale 1:20000).

Synonym: Taerbagete Fm


Lithology and Thickness

Siltstone, volcanic tuff. The formation is characterized by yellowish-gray and grayish-brown siliceous siltstone, volcanic tuff and tuffaceous breccia intercalated with thin-bedded siltstone. The outcrop thickness is about 360 m.


Lithology Pattern: 
Siltstone


Relationships and Distribution

Lower contact

The formation rests conformably on clayey slate of Wenduraobaote Fm.

Upper contact

The formation is covered by Quaternary.

Regional extent


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[114.9,44.28],[116.4,44.77],[116.71,45.31],[116.03,45.67],[114.57,45.39],[113.95,44.58],[114.9,44.28]]]]}}

Fossils

It yields abundant brachiopods Mucrospirifer spp., Elytha sp., Spinulicosta sp., Leptostrophia sp., Schuchertella sp.; bryozoan Semicoscinium sp., Hemitrypa sp.; coral Heliophyllum spp. etc.


Age 

Givetian (late Middle Devonian)

Age Span: 
S

    Beginning stage: 
Givetian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
385.30

    Ending stage: 
Givetian

    Fraction up in the ending stage: 
0.8

    Ending date (Ma):  
380.18

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

(Hou Hongfei)