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Quzon Formation

Quzon Fm

Period: 
Carboniferous

Age Interval: 
C21-C2 (67), middle Early to the Late Carboniferous


Province: 
Xizang (Tibet)

Type Locality and Naming

The type section lies at Quzon along Zhagaqu northward to Xishan and Kuyou, Pazhug District, Tingri County, Tibet. It was named by Yin Jixiang and Guo Shizeng in 1976.


Lithology and Thickness

Claystone and Sandstone. Gray-green silty mudstone and shale intercalated with sandstone, containing irregular clay nodules in the mudstone. Thickness >200 m.


Lithology Pattern: 
Claystone


Relationships and Distribution

Lower contact

Unknown: The bottom is in faulted contact with the Ronggama Fm, trending WNW-ENE

Upper contact

Unknown: The top is in faulted contact with the Jilong Fm, trending WNW-ENE.

Regional extent

Distributed along Quzon and Kede of Pazhug District, Tingri County westward to Yali Village of Nyalam. Also exposed at Yunzhug of Xianza County north of the Yarlung Zangbo River.


GeoJSON

null

Fossils

At Beishan-Suishipo of Quzon, several fragments of Brachiopods Syringothyris ex. gr. lydekkeri and Dictyoclostus cf. viminalis as well as crinoid stems have been collected.


Age 

late Visean (middle Early Carboniferous) to Late Carboniferous

Age Span: 

    Beginning stage: 
Visean

    Fraction up in beginning stage: 
0.65

    Beginning date (Ma): 
336.08

    Ending stage: 
Gzhelian

    Fraction up in the ending stage: 
0.5

    Ending date (Ma):  
301.28

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

Fan Yingnian