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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Kutal Formation

Kutal Fm

Period:

Permian

Age Interval:

Upper Permian, M1-M3d

Province:
SE Tajik (SE Pamir)

Type Locality and Naming

Includes in SE Murghab district (Mynkhadjr type), SE Murghab district (Istyk type (Dunkeldyk area), SE Murghab district (Gurdumdin type), SE Murghab district (Gurdumdin type Kastanatdjilga, Buryukurmes rivers), SE Murghab district (Gurdumdin type Shin and Igrymiyu rivers), SE Murghab district (Gurdumdin type Gurumd and Kattamardzhana rivers).

It is the uppermost formation in Gan Gr

Synonym: Kutal Fm, Kutral'skaya stratum, Kutalskaya suite

Lithology and Thickness

The Gan Gr ends with about 30m of interbedded yellow, purple, and green cherty bioclastic limestones, cherts and volcaniclastic ashes. Regional thickness is 0-50 m.

Lithology Pattern:

Siliceous limestone

Relationships and Distribution

Lower contact

Overlies the Karasu Fm

Upper contact

The boundary with the overlying Takhtabulak Fm was drawn by Angiolini et al. (2017) at an ash bed (frequently covered) which marks the disappearance of limestones.

Regional extent

It is widespread in the Southeast Pamir.

GeoJSON

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Fossils

In it, representatives of the Pamir Palaeofusulina, Reichelina, Codonofusiella, Kahlerina, Verbeekina, Sumatrina, Armenina, Neoschwagerina cf. katoi Oz., N. haydeni Dutk., N. craticulifera (Schw.) have been found.

Age

Spans uppermost Capitanian on the summary stratigraphic columns by Angiolini et al. (2010). [However, in terms of time, considering that the underlying unit has thick conglomerate events, then this siliceous limestone is placed in the upper half of Capitanian for paleogeographic purposes.]

Age Span:

Beginning stage:

Capitanian

Fraction up in beginning stage:

0.5

Beginning date (Ma):

261.94

Ending stage:

Capitanian

Fraction up in the ending stage:

1.0

Ending date (Ma):

259.55

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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

Angiolini, L., et al. (11 authors) (2015) From rift to drift in South Pamir (Tajikistan): Permian evolution of a Cimmerian terrane. Jour. Asian Earth Sciences, 102: 146-169. http://dx.doi.org/10.1016/j.jseaes.2014.08.001