Cenozoic

Cretaceous

Jurassic

Triassic

Permian

Carboniferous

Devonian

Silurian

Ordovician

Cambrian

Neoproterozoic

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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Vakhsh Formation

Vakhsh Fm

Period:

Cretaceous

Age Interval:

Valanginian-lower? Hauterivian, K1, D1, S3, C2, C2a

Province:
SW Tajik, North Tajik, Central W Tajik

Type Locality and Naming

Includes in Khation Region, Darvaz district, Dushanbe - west Shirkent-Luchob, Dushanbe - east Shirkent-Luchob.

The Berriasian? stage - middle substage of the Aptian stage is identified in the South Gissar, Dushan, Binsky, Kafirnigan, Vakhsh, Zaalaysky, and Darvaz districts includes the following horizons: 1-Karabil (Berriasian? Valanginian?); 2-Almurad (Valanginian-lower? Hauterivian); 3-Kyzyltash (upper? Hauterivian-lower? Barremian); 4-Okozbulak (upper Barremian-lower Aptian); 5-Kaligrek (middle Aptian). The Karabil horizon includes the Karabil Fm and the lower part of the Shirk Fm. The Almurad horizon includes the upper part of the Shirk Fm, the Almurad Fm, and the Vakhsh Fm. The Kyzyltash horizon is represented by the Kyzyltash Fm. The Ouzbulazh horizon includes the Ouzbulazh Fm and the lower part of the Obigarm Fm. The Kaligrek horizon is represented by the upper part of the Obigarm suite and the Aksuy Fm.

Synonym: Vakhsh suite

Reference section:

Lithology and Thickness

It is composed of interbedded brown-brownish claystones, sandstones, and clays with a dolomitic layer.

Lithology Pattern:

Sandy_claystone

Relationships and Distribution

Lower contact

Overlies the Almurad Fm

Upper contact

Overlain by the Kyzyltash Fm.

Regional extent

Afghan-Tajik Basin.

GeoJSON

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Fossils

No fossil remains have been found.

Age

lower Hauterivian?

Age Span:

Beginning stage:

Hauterivian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

132.60

Ending stage:

Hauterivian

Fraction up in the ending stage:

0.5

Ending date (Ma):

129.55

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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