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Jiawendaban Formation

Jiawendaban Fm

Period: 
Permian

Age Interval: 
P1-P (46), Kungurian Stage (late Cisuralian Epoch) to earliest Guadalupian Epoch (late-Early to earliest-Middle Permian)


Province: 
Xinjiang

Type Locality and Naming

The type section is located in the vicinity of the Qiangcheng River to the southeast of the Kongka Mt. Pass of the Hetian County, Xinjiang. It was named by the 1st Regional Geological Survey Expedition under the Xinjiang Bureau of Geology and Mineral Resources in 1984


Lithology and Thickness

Limestone and Clastics. Composed of grey-white massive limestone, sandy limestone, marble, bioclastic limestone, clayey siltstone and quartz-sandstone, with a thickness of over 30 m.


Lithology Pattern: 
Sandy limestone


Relationships and Distribution

Lower contact

Uncertain contact with the underlying strata of the Qiatier Gr

Upper contact

Conformable contact with the overlying Kongkashankou Fm.

Regional extent


GeoJSON

null

Fossils

Fusulinida that belongs to the Monodiexodina fauna.


Age 

Zhang Linxin (1988) would think that the above-mentioned fauna is similar to the Monodiexodina from the Tunlonggongba Fm in the Ritu County of Tibet, belonging to the Luodianian and Xianbo’an Stages of the middle Permian Epoch = Kungurian Stage (late Cisuralian Epoch) to earliest Guadalupian Epoch (late-Early to earliest-Middle Permian)

Age Span: 

    Beginning stage: 
Artinskian

    Fraction up in beginning stage: 
1.0

    Beginning date (Ma): 
283.30

    Ending stage: 
Kungurian

    Fraction up in the ending stage: 
0.75

    Ending date (Ma):  
276.60

Depositional setting


Depositional pattern:  


Additional Information

In the Mingtiegai area, this formation is composed mainly of metamorphosed quartz-sandstone, carbonaceous slate and siliceous rocks, with a thickness of 2800 m.


Compiler:  

Wang Yujing