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Qazil Langer Formation
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Qazil Langer Fm base reconstruction

Qazil Langer Fm

Period: 
Cretaceous

Age Interval: 
(post-Valanginian; ?132 Ma)


Province: 
NW Himalaya Karakoram-east

Type Locality and Naming

Upper Shyok Valley: Type section is in Qazil Langer locality in Upper Shyok Valley, Eastern Karakoram, India. [Original Publication: Gergan, J. T. & Pant, P. C., 1983. Geology and stratigraphy of eastern Karakoram, Ladakh. In: Thakur, V. C. and Sharma, K. K., (eds), Geology of Indus Suture Zone of Ladakh, Wadia Institute of Himalaya Geology, Dehra Dun, India, 99-106; Juyal, K.P. 2018. Lithostratigraphy, biostratigraphy and palaeogeography of the Eastern Karakoram, India. WIHG Monograph series, No. 3. 1-126.]


Lithology and Thickness

Conglomerate. Comprises >1000 m of conglomerate with very minor shales and sandstone at the basal part. Rolled hydrozoans and fossiliferous limestone boulders of the Burtsa Fm occur within the Qazil Langer Conglomerate beds.

[Figure 1: Biostratigraphic section of Qazil Langer Formation, Eastern Karakoram (Juyal, 2018)]


Lithology Pattern: 
Conglomerate


Relationships and Distribution

Lower contact

Not defined; but next older unit is the Burtsa Fm.

Upper contact

Not defined. But geologic map of Karakoram Group succession implies the next unit should be a Kumdan Fm (volcanics = coeval with Shyok Volcanic Fm ?), then a Depsang Fm (not yet in this Lexicon).

Regional extent

Upper Shyok Valley: Not defined.


GeoJSON

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Fossils

None.


Age 

Post-Valanginian age as constrained by biostratigraphy of youngest assemblage in the underlying Burtsa Fm.

Age Span: 

    Beginning stage: 
Hauterivian

    Fraction up in beginning stage: 
0.3

    Beginning date (Ma): 
130.77

    Ending stage: 
Barremian

    Fraction up in the ending stage: 
0.3

    Ending date (Ma):  
124.97

Depositional setting

The conglomerate of the Qazil Langer Formation are mainly derived from the Burtsa Fm therefore it is concluded that the Qazil Langer Formation was deposited under freshwater environment in the post-Early Cretaceous (post-Valanginian) time.


Depositional pattern:  


Additional Information

Juyal, 2018


Compiler:  
:

K.P.Juyal and Birendra P. Singh