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Neogene
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Cretaceous
Jurassic
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Permian
Carboniferous
Devonian
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Main source = Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian) Translated to English by the GeoGPT group, Zhejiang Lab, Hangzhou, China--see About

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Kaznok Formation

Kaznok Fm

Period: 
Permian

Age Interval: 
Lower Permian (?), Z1


Province: 
Zarafshan-N.Gissar

Type Locality and Naming

Along the Kaznok River. D.A. Starshinin in 1971 (460, p. 218). Stratotype on the right bank of the Kaznok Say.

Synonym: Kaznok Suite, Казнокская св.


Lithology and Thickness

Polychrome clasto-lavas, rhyolite, trachyte, phonolite tuffs, alkaline volcanites with interlayers of volcanomictic sandstones, limestone conglomerates, limestones. At the base, a package (M. 50-100m) of polymictic, predominantly limestone conglomerates with abundant remains of Visean brachiopods, crinoids, rugose corals, foraminifers. Thickness up to 1500m.


Lithology Pattern: 
Volcanic_ash


Relationships and Distribution

Lower contact

Lies with erosion and unconformity on Silurian, Devonian, and Middle-Upper Carboniferous Marguzor Fm rocks

Upper contact

Overlying deposits are absent.

Regional extent

North part of the Gissar Range, Chakylkalyan Mountains.


GeoJSON

null

Fossils


Age 

The age of the suite is conditionally accepted as Early Permian based on its position in the section and correlation with the nepheline syenite massif developed here, considered Permian.

Age Span: 

    Beginning stage: 
Sakmarian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
293.52

    Ending stage: 
Artinskian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
283.30

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

B.B. Muxaŭlov – In: GeoGPT translation of: “Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)”