Kshut Fm
Period:
Jurassic
Age Interval:
Toarcian-Aalenian (P2+3), S4
Province:
North Tajik
Type Locality and Naming
In recent years, they have been studied by R. Z. Genkina (Explanatory note..., 1971).
Synonym: Kshut suite
Reference section:
Lithology and Thickness
It is represented by the alternation of quartz medium-coarse-grained sandstones, claystones, clays, and carbonaceous rocks. Power is 60-100 m.
Lithology Pattern:
Coarse-grained sandstone
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. The most complete sections are known in the area of the Kshut coal deposit.
GeoJSON
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Fossils
Spore-pollen complex
Age
The spore-pollen complex allows dating the suite to the Toarcian-Aalenian stages.
Age Span:
Beginning stage:
Toarcian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
184.20
Ending stage:
Aalenian
Fraction up in the ending stage:
1.0
Ending date (Ma):
170.90
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Extracted from Baratov, R. B. (1976). Subdivisions of stratified and intrusive rocks of Tajikistan. Donish, Dushanbe, 276.