Kuhiraat Fm
Period:
Triassic
Age Interval:
Lower - Middle Triassic, S4
Province:
North Tajik
Type Locality and Naming
Synonym: Kuhiraatskaya suite, Кухираатская свита
Reference section:
Lithology and Thickness
It is represented by a thick layer of greenish and dark gray argillaceous clays and less often by siltstones with layers of fine-grained sandstones and rare thin coal beds. The thickness of the suite is 200-270 m.
Lithology Pattern:
Clayey sandstone
Relationships and Distribution
Lower contact
The deposits are conformably underlain.
Upper contact
The deposits are conformably overlain.
Regional extent
GeoJSON
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Fossils
The plant remains encountered in the layer are rare and unrepresentative.
Age
The Upper Triassic age of the suite is established by E. N. Dubrovskaya (Explanation note..., 1971) based on the spore-pollen complex. The age was confusing whether it’s a misspelling or Triassic, so put in Early Triassic for schematic stratigraphic purpose.
Age Span:
Beginning stage:
Induan
Fraction up in beginning stage:
0.0
Beginning date (Ma):
251.90
Ending stage:
Olenekian
Fraction up in the ending stage:
0.5
Ending date (Ma):
248.29
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Extracted from Baratov, R. B. (1976). Subdivisions of stratified and intrusive rocks of Tajikistan. Donish, Dushanbe, 276.