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Poindo Gr

Poindo Gr


Period: 
Carboniferous

Age Interval: 
C22-P11 (), Late Carboniferous to early Early Permian


Province: 
Xizang (Tibet)

Type Locality and Naming

The type section is located at Poindo, north of Lhünzhub County, northeastern Lhasa, Tibet. It was named by Li Pu et al. in 1955.


Lithology and Thickness

Volcanics and Conglomerate. A suite of volcanic and clastic rock formation. Lower part is composed of gray-green intermediate-basic volcanic rock and volcanic brecciated clastic rock; Upper part is of gray-green pebbly sandstone, black pebbly conglomerate and black slate. Thickness 435 m.


Lithology Pattern: 
Volcanics


Relationships and Distribution

Lower contact

Unknown: The basal part of the group is cut through by fault, bottom unexposed

Upper contact

Conformable contact with the Lower Permian Wululong Fm

Regional extent

Mainly distributed between Wululong and Majula, north of Lhünzhub County


GeoJSON

null

Fossils

Brachiopods Bandoproductus hemiglobicus, Chaoilla latisinuata, Syringothyris cf. namagensis, S. lyddekeri and Leiorhynchoidea sp., Bivalve Deltopecten sp.


Age 

Late Carboniferous to early Early Permian

Age Span: 

    Beginning stage: 
Moscovian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
315.15

    Ending stage: 
Asselian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
293.52

Depositional setting

It is interpreted as a


Depositional pattern:  


Additional Information


Compiler:  

Fan Yingnian