Chambil Fm
Period:
Carboniferous
Age Interval:
Visean, N1
Province:
Nuratau
Type Locality and Naming
Along the Chambil quarry, N. Nuratau Range. R.R. Usmanov in 1991 (460, p. 162).
Synonym: Chambil Suite, Чамбильская св.
Lithology and Thickness
Gray, light-gray, rarely dark-gray, clearly layered, aphinitic, oolitic, organogenic-detrital limestones. Thickness 270-300m.
Lithology Pattern:
Oolitic limestone
Relationships and Distribution
Lower contact
Conformably overlies the Besragatin Fm
Upper contact
The upper boundary is drawn at the base of bauxites or alloites at the base of the middle Carboniferous limestones, Bashkirian stage (Usmanov et al., 1999).
GeoJSON
null
Fossils
Contains foraminifers - Earlandia elegans (Raus. et Reitl.), Omphalotis cf. frequentata (Gan.), Tuberetina maljavkini Mikh., Endostaffella shamordini (Raus.) and others.
Age
Assigned to the Visean stage of the lower Carboniferous.
Age Span:
Beginning stage:
Visean
Fraction up in beginning stage:
0.0
Beginning date (Ma):
346.73
Ending stage:
Visean
Fraction up in the ending stage:
1.0
Ending date (Ma):
330.34
Depositional setting
Depositional pattern:
Additional Information
Compiler:
R.R. Usmanov, V.V. Mikhailov – In: GeoGPT translation of: “Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)”