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Lading Gr

Lading Gr

Period: 
Carboniferous

Age Interval: 
C21−P1 (63), Late Carboniferous to Early Permian


Province: 
Xizang (Tibet)

Type Locality and Naming

The type section is located around Lading of the Mozhugongka area, east of Lhasa, Tibet. It was named by Li Pu in 1955.


Lithology and Thickness

Sandstone, Claystone and Volcanics. Lower part consists of interbeds of coarse-grained quartz sandstone and gray-green slate, intercalated with thin-bedded limestone, 200−300 m thick. Middle part, gray thick-bedded quartzite intercalated with black slate, andesite and andesitic tuff, 300−350 m thick. Upper part, dominated by green andesite and tuff, intercalated with limestone lenses, 400−500 m thick.


Lithology Pattern: 
Volcanics


Relationships and Distribution

Lower contact

Unknown: The bottom boundary is unclear.

Upper contact

Unknown: The top boundary is unclear. Regionally, next younger unit is the Pangduo Gr (Artinskian)

Regional extent


GeoJSON

null

Fossils

Lower part contains coral Kueichouphyllum sp.


Age 

Assigned as Late Carboniferous to Early Permian (but Permian column in this Linzhou region suggests non-deposition in earliest Permian)

Age Span: 

    Beginning stage: 
Visean

    Fraction up in beginning stage: 
0.65

    Beginning date (Ma): 
336.08

    Ending stage: 
Asselian

    Fraction up in the ending stage: 
0.8

    Ending date (Ma):  
294.59

Depositional setting

It is interpreted as marine-facies terrigenous clastic rock with eruptive volcanics.


Depositional pattern:  


Additional Information


Compiler:  

Fan Yingnian