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Xiaotikanlik Formation

Xiaotikanlik Fm

Period: 
Permian

Age Interval: 
P (25), Kungurian Stage (late-Cisuralian Epoch; late-Early Permian)


Province: 
Xinjiang

Type Locality and Naming

The type section is located at the Xiaotikanlik Spring Trench of the Sawapuqi Region, Wensu County, Xinjiang. It was named by the Stratigraphical Party under the Xinjiang Geological Bureau in 1975, and was cited officially by the Bureau of Geology and Mineral Resources of Xinjiang Uygur Autonomous Region in 1981.


Lithology and Thickness

Volcanics and Clastics. Composed of grey-green, purplish-red and dark grey-red intermediate-acidic lava, tuff and tuffaceous conglomerate, intercalated with clastic rocks, with a thickness of 237 m.


Lithology Pattern: 
Lava


Relationships and Distribution

Lower contact

Unconformable effusive contact onto the underlying Carbonaceous (Kangkelin Fm) and Silurian strata

Upper contact

Disconformable contact with the overlying Kulgan Fm

Regional extent

Distributed on the southern slope of the Harke Mt., starting from the Xiaotielek River in the west through the Muzhalte River in the east ending, till the Kuche River. In the mountain area of the Kuokeshale Ridge the formation is distributed in the Sawapuqi area and represents volcaniclastic rocks, intercalated clastic rock, locally being composed mainly of very thick quartz-porphyry. In some areas in the east, there are developed tuff and conglomerate. In the Laohutai area of the Baicheng County, the basal part of the formation consists of conglomerate and sandstone, with a thickness of 208 m, and thinning out gradually from here towards the two flanks, while in the Kapushaliang River and the Qieleke River areas the formation is over 3000 m thick, and is getting thinner to the west.


GeoJSON

null

Fossils

The formation is short of data on fossils.


Age 

Wu Shaozu et al. (1985) would think that the formation should be corresponding to the Kupukuziman Fm in the northern region of the Keping County, belonging to the early stage of the Yangsingian Epoch = potentially Kungurian Stage (late-Cisuralian Epoch; late-Early Permian)

Age Span: 

    Beginning stage: 
Kungurian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
283.30

    Ending stage: 
Kungurian

    Fraction up in the ending stage: 
0.5

    Ending date (Ma):  
278.84

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

Hou Jingpeng, Zhu Zili)