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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Sebisurkh Formation

Sebisurkh Fm

Period:

Permian

Age Interval:

Lower Permian (P₁ kr), D1

Province:
SW Tajik

Type Locality and Naming

Distinguished in the Southwestern Darvaz by N. G. Vlasov (Vlasov, 1959; Vlasov and Miklukho-Maklai, 1959)

Synonym: Sebisurkh suite, себисурхскойс виты

Reference section:

Lithology and Thickness

It belongs to Karachatyrsky horizon. The lower sub-suite of the Sebisurkh suite is represented by layered light gray and dark gray reef (?) limestones with a thickness of 0-920 m.

Lithology Pattern:

Reef limestone

Relationships and Distribution

Lower contact

Conformably underlain by Khorezh Fm

Upper contact

Conformably overlain by Zygar Fm

Regional extent

Khorezhska Fm (Хориджская свита) and the lower sub-suite of Sebisurkh Fm replace each other in the lateral direction and are coeval. It is distributed in Southwestern Darvaz district.

GeoJSON

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Fossils

In them, numerous remains of Karachatyrsky fusulinids Quasifusulina cayeuxi Depr., Q. karawanensis M.-Maclay., Schubertella sphaerica Sul., Schwagerina moelleri Dutk., Schw. vulgaris, Pseudofusulina alpina Scherbw., as well as corals characteristic of the deposits corresponding to the Karachaturskian stage of Central Asia (the Wolfcamp formation of America, the Ch'uanshan suite of China, the Pseudoschwagerina zone of Japan) Caninia mapingensis Lee et Yu, C. schechunovi Fom., Gschelia roulleri Stuck., Gerthia marinica Pyzh. (Pyzhyanov and Vlasov, 1970).

Age

Based on the fossil data, it is taken as Sakmarian for schematic stratigraphic representation.

Age Span:

Beginning stage:

Sakmarian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

293.52

Ending stage:

Sakmarian

Fraction up in the ending stage:

1.0

Ending date (Ma):

290.51

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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