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Cenozoic
Cretaceous
Jurassic
Triassic
Permian
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Devonian
Silurian
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Main source = Baratov, R.B., et al. (1976). Subdivisions of stratified and intrusive rocks of Tajikistan. Publishing House "Donish", Dushanbe, 269 pp. plus tables. Provided by Dr. Jovid Aminov, Nazarbayev University, Astana, Kazakhstan Translated to English by the GeoGPT group, Zhejiang Lab, Hangzhou, China--see About

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Kokdzhar Formation
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Kokdzhar Fm base reconstruction

Kokdzhar Fm


Period: 
Jurassic

Age Interval: 
upper Bajocian (J2 bj), M3a


Province: 
SE Tajik (SE Pamir)

Type Locality and Naming

It is distinguished in the Southeast Pamir in the SE Murghab district Gurumdin type section of the Jurassic.

Synonym: Kokdzharskaya suite

Reference section:


Lithology and Thickness

It is composed by various limestones and marls


Lithology Pattern: 
Shallow-marine marl


Relationships and Distribution

Lower contact

Lying conformably with the Aalenian and Bathonian strata / Kargon Fm

Upper contact

Regional extent

It is widespread in the Southeast Pamir.


GeoJSON

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Fossils

Witchellia cf. regredians Haug


Age 

Upper Bajocian

Age Span: 

    Beginning stage: 
Bajocian

    Fraction up in beginning stage: 
0.5

    Beginning date (Ma): 
169.54

    Ending stage: 
Bajocian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
168.17

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

Extracted from Baratov, R. B. (1976). Subdivisions of stratified and intrusive rocks of Tajikistan. Donish, Dushanbe, 276.