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
Bashijiqike Formation
Click to display on map of the Ancient World at:
Bashijiqike Fm base reconstruction

Bashijiqike Fm

Period: 
Cretaceous

Age Interval: 
Late Cretaceous, K2bs, (4)


Province: 
Xinjiang

Type Locality and Naming

Kuqa Depression, NW Tarim. Huangjiqing (1943) erected the Bashijiqike System in Bashijiqike section of the Kuqa County, Xinjiang (E83°17′, N41°13′). Si Xingjian (1964) renamed it as the Bashijiqike Formation. Lin Juntang (1965) divided it as two parts. The lower part was named as the Sugan group; and upper as the salt-bearing formation. The reference section is at Kuqa County, Xinjiang.

Synonym: Bashkichick Fm


Lithology and Thickness

The Bashijiqike Formation can be recognized into two parts by coarser in the lower and finer in the upper. Lower part is composed of mulberry and brownish conglomerates. Upper part is dominated by pink sandstones, with intercalations of grayish green and greenish yellow sandy mudstone.

[Figure: Bashijiqike Formation in Kuqa River section, Kuqa County, Xinjiang]


Lithology Pattern: 
Coarse-grained sandstone


Relationships and Distribution

Lower contact

The formation contacts conformably (?) with the underlying Kapushaliang Gr (Baxigai Fm). However, shown as major disconformity (nearly entire Late Cretaceous absent) onto Baxigai Fm by Dangpeng Xi, Xiaoqiao Wan, et al. (2019; Integrated Stratigraphy and TimeScale of China)

Upper contact

The formation is disconformable or conformable with the above Paleogene strata (Talak Fm).

Regional extent

It distributed in Kapushaliang, Jielieweiqieke and Kalesu the area of Kuche (Kuqa) County, Xinjiang.


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[81.854,42.485],[83.63,42.741],[84.98,42.741],[85.307,42.641],[85.378,42.471],[85.719,42.3],[85.591,42.115],[84.867,41.746],[84.326,41.504],[82.848,41.362],[81.811,41.135],[80.788,40.978],[80.02,40.907],[79.352,41.035],[79.196,41.249],[79.367,41.49],[79.679,41.661],[80.802,42.115],[81.854,42.485]]]]}}

Fossils

None listed


Age 

Shown as mid-Campanian through Maastrichtian (and higher?) by Dangpeng Xi, Xiaoqiao Wan, et al. (2019; Integrated Stratigraphy and TimeScale of China)

Age Span: 

    Beginning stage: 
Campanian

    Fraction up in beginning stage: 
0.5

    Beginning date (Ma): 
77.91

    Ending stage: 
Maastrichtian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
66.04

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

Wan Xiaoqiao