Niazek Fm
Period:
Triassic
Age Interval:
Ladinian-Carnian (T2-3), E-Psh1
Province:
East Tajik (East Pamir)
Type Locality and Naming
Includes in East Pshart.
Synonym: Niazek layer, Ниязекская толща
Reference section:
Lithology and Thickness
It is composed of greenstone-altered volcanic rocks of basic composition. In the lower and upper parts, there are beds of metamorphosed sandstones, sandstone-siltstone rocks, and limestones.
Lithology Pattern:
Volcanics
Relationships and Distribution
Lower contact
The lower contact of the layer is tectonic
Upper contact
The upper contact represents an eroded surface, on which the Lower Jurassic Jerunsay Fm lies without apparent angular discordance.
Regional extent
It is exposed to the west of the Muzdubulak Fm (муздубулакской толщи) outcrops, in the basin of the Kayindy River.
GeoJSON
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Fossils
No organic remains have been found in the layer.
Age
Similar in composition to the Ladinian-Carnian volcanics of the Kattamardzhana Fm, relative to the Musdubulak Fm, it apparently occupies a lower stratigraphic position. Hence it is considered as Middle-Upper Triassic for schematic stratigraphic column purpose.
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.