Dongusay Fm
Period:
Carboniferous
Age Interval:
Lower Carboniferous (Tournaisian), CK13
Province:
Chatkal-Kuramin Region
Type Locality and Naming
Along the Danguzsay River, basin of the Sumkar River, southern slope of the Chatkal Range. S.V. Litovchak et al., 1985.
Synonym: Donguzsay Suite, Донгусайская св.
Lithology and Thickness
Dark gray and gray layered organogenic-detrital limestones with frequent nodules and lenses of flint. Thickness 250-350m.
Lithology Pattern:
Limestone
Relationships and Distribution
Lower contact
Along the bedding, it lies on the Sairam Fm
Upper contact
It is overlain by the Aktaush suite.
Regional extent
GeoJSON
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Fossils
Contains foraminifera - Tournayella discoidea Dain., Endothyra (Latiendothyra) latispiralis tipica Lip., Palaeospiroplectammina tchernyshinensis Lip.
Age
Age Span:
Beginning stage:
Tournaisian
Fraction up in beginning stage:
0.5
Beginning date (Ma):
353.02
Ending stage:
Visean
Fraction up in the ending stage:
0.2
Ending date (Ma):
343.45
Depositional setting
Depositional pattern:
Additional Information
Compiler:
I.M. Nigmadzhanov – In: GeoGPT translation of: “Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)”