Zaur Fm
Period:
Triassic
Age Interval:
Middle Triassic (P2+3), S4
Province:
North Tajik
Type Locality and Naming
Synonym: Zaurskaya suite, Зауранская свита
Reference section:
Lithology and Thickness
Coal-free, is distinguished by cyclic sedimentary structure. Each cycle consists of fine-grained sandstones, claystones, clays, carbonaceous rocks, and coal seams. The thickness of the suite is 140-210 m. At the top of the section, there are gravelites and fine-gravel conglomerates.
Lithology Pattern:
Sandy_claystone
Relationships and Distribution
Lower contact
The Jurassic deposits lie with a sharp angular unconformity on the Paleozoic rocks
Upper contact
They are overlain discordantly by the Upper Cretaceous.
Regional extent
In the southern part of the Turkestan region, J1+2 deposits are exposed along the rivers Kshut, Zauran, Rivat, Surhat.
GeoJSON
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Fossils
Age
The suite can be tentatively dated to the Baikal period based on a depleted complex of plant remains. For schematic stratigraphic representation, it is considered Early-Middle Triassic, based on the subdivisions in the extracted book.
Age Span:
Beginning stage:
Ladinian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
241.46
Ending stage:
Ladinian
Fraction up in the ending stage:
0.5
Ending date (Ma):
239.23
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Extracted from Baratov, R. B. (1976). Subdivisions of stratified and intrusive rocks of Tajikistan. Donish, Dushanbe, 276.