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
null
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)”