Home Multi-Country Search About Admin Login
Cenozoic
Cretaceous
Jurassic
Triassic
Permian
Carboniferous
Devonian
Silurian
Ordovician
Cambrian
Neoproterozoic
Mesoproterozoic

Search by
Select Region(s) to search
Hold Ctrl (Windows/Linux) or Command (Mac) to select multiple
Xiashibei Formation
Click to display on map of the Ancient World at:
Xiashibei Fm base reconstruction

Xiashibei Fm

Period: 
Devonian

Age Interval: 
D11 (75), Lochkovian (Early Devonian)


Province: 
Inner Mongolia

Type Locality and Naming

The type section is located at North Hill of Xiashibei, 65 km of Naman Qi, Zelimu of Inner Mongolia. It was named by No. 2 Team of Liaoning Regional Geological Survey in 1967 and was published in 1978 by Lioning Compiling Group for Regional Stratigraphical Scale.


Lithology and Thickness

Limestone. The Formation is characterized by grayish-white thick- to massive-bedded marbled limestone and microcrystalline limestone intercalated with clayey slate and a few breccias. It ranges from about 430 to 1170 m thick.


Lithology Pattern: 
Limestone


Relationships and Distribution

Lower contact

Its upper and lower boundaries are not exposed. But in this region, the next older formation is indicated as Silurian (name not given on chart).

Upper contact

Its upper and lower boundaries are not exposed. But in this region, the next younger formation is the Qiankungtougou Fm sandstone of mid-Devonian

Regional extent

This Formation is widespread in central and southeastern Inner Mongolia with incomplete outcrops.


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[116.78,43.06],[115.07,42.85],[114.37,42.22],[115.22,41.64],[116.68,42.11],[117.22,42.73],[116.78,43.06]]]]}}

Fossils

It yields coral Mesofavosites ex gr. jilinensis, Favosites fungites, Parathamnopora yongjiensis, Fletcheria camera, Bogimbailites florifer, Zelophyllum cf. intermedium, Pseudomicroplasma sp., brachiopoda and stromatoporoids.


Age 

Lochkovian (Early Devonian)

Age Span: 
S

    Beginning stage: 
Lochkovian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
419.00

    Ending stage: 
Lochkovian

    Fraction up in the ending stage: 
0.4

    Ending date (Ma):  
416.36

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

(Su Yanzheng)