Koksaray Fm
Period:
Carboniferous
Age Interval:
Lower-Middle Carboniferous (Visean-Bashkirian), F9c
Province:
Fergana
Type Locality and Naming
By the Koksarai mountain, Southern Fergana. A.D. Miklouho-Maclay, G.S. Porshnyakov, 1961 (296, p. 13).
Synonym: Koksaian suite
Lithology and Thickness
Organogenic-detrital limestones, marls, siltstone (aleurolites) with layers of sandstones and clayey-siliceous slates. At the base, limestone and serpentinite-limestone conglomerates and conglobreccias with fragments of sandstones and metamorphic slates. Thickness 20-130m.
Lithology Pattern:
Shallow-marine marl
Relationships and Distribution
Lower contact
With angular unconformity lies on the Kaindi Fm or on the metaultrabasites of the Kan Fm
Upper contact
It is overlain with erosion by the Kalmakbulak Fm
Regional extent
Southern Fergana, Karachatyr mountains.
GeoJSON
null
Fossils
Age
In the Strat. sl. (439) attributed to the upper Serpukhovian-lower Bashkirian stage. It is mentioned in the book that it is Visean-Bashkirian, it is represented in the same to show lithologies schematically.
Age Span:
Beginning stage:
Visean
Fraction up in beginning stage:
0.0
Beginning date (Ma):
346.73
Ending stage:
Bashkirian
Fraction up in the ending stage:
0.3
Ending date (Ma):
320.93
Depositional setting
Depositional pattern:
Additional Information
Compiler:
– In: GeoGPT translation of: ”Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)"