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Bugti Formation
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Bugti Fm base reconstruction

Bugti Fm

Period: 
Paleogene, Neogene

Age Interval: 
Oligocene to Miocene


Province: 
Pakistan Indus Basin

Type Locality and Naming

Holotype section: North of Gandoi Post. Author: C.F. Cooper, 1924. Reference section: None.


Lithology and Thickness

Coarse-grained sandstone. It is composed of bright and varicolored sandstones with common interbeds of ferruginous conglomerates and yellow and red sandy silts. Some of the sandstones are pure white and soft with no apparent bedding; such beds increase in number upwards. Conglomerates occur in lower section where lenticular beds of tuff and ash are also present.

Thickness: Attains a maximum thickness of 300 m on the flanks of Zin anticline and gradually wedges out in all directions.


Lithology Pattern: 
Coarse-grained sandstone


Relationships and Distribution

Lower contact

Conformably overlain by Siwalik Gr

Upper contact

Disconformably underlain by Drazinda Fm

Regional extent

Restricted to Bugti area. It is best developed on both flanks of Zin anticline and is not recognized in Sulaiman Range foothills.


GeoJSON

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Fossils

Rich in vertebrate remains. It contains a unique blend of mammals of Asian affinity and of African origin.


Age 

Oligocene to Miocene.

Age Span: 

    Beginning stage: 
Rupelian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
33.90

    Ending stage: 
Aquitanian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
20.45

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

Nusrat K. Siddiqui