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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Saratash Formation

Saratash Fm

Period:

Triassic

Age Interval:

Ladinian-Carnian (T_1-3), M2

Province:
SE Tajik (SE Pamir)

Type Locality and Naming

Includes in SE Murghab district (Istyk type Dunkeldyk area). It is distinguished by V. I. Dronov in 1968.

Synonym: Sarytash Fm, Saratashskaya suite, сарыташская свита

Reference section:

Lithology and Thickness

It is universally divided into three parts. The lower part of the suite (Djangisuy member (джангисуйская Толща)), with a thickness of up to 45 m, is composed of finely layered cherts with limestone interlayers; the middle (Bosterek member (бозтеринская толща), with a thickness of up to 15 m, is composed of massive and coarse-bedded limestones; the upper (Kurudzhilgin member), with a thickness of up to 25 m, is composed of finely layered cherts and calcareous-chert shales with limestone interlayers.

Lithology Pattern:

Limestone

Relationships and Distribution

Lower contact

Upper contact

It is overlain conformably by the Istyk Fm of Norian-Rhaetian.

Regional extent

It is widespread in the Southeast Pamir.

GeoJSON

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Fossils

Organic remains are contained in all members. The Djangisuy member at the bottom includes Anisian-Ladinian pelecypods - Posidonia wengensis W.issm., P. alta Mojs. et al., in the middle and upper parts - Ladino-Carnian pectinids - Daonella pichleri Bitt., D. reticulata Mojs., D. indica Bitt. The Bozterinskaya formation contains Early Carnian ammonoids - Jovites aff. daci Mojs., Tropites estellae Mojs. Kyruzhilgin member contains abundant remains of Late Carnian-Early Norian pectinids Halobia austriaca Mois., H. cassiana Mojs., H. charlyana Mojs.

Age

Ladinian-Carnian

Age Span:

Beginning stage:

Ladinian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

241.46

Ending stage:

Carnian

Fraction up in the ending stage:

1.0

Ending date (Ma):

227.30

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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