Baymentau Fm
Period:
Carboniferous
Age Interval:
Upper Bashkirian-Lower Moscovian, K2, K6
Province:
Kyzylkum Region
Type Locality and Naming
Along the Baymentau, Bukantau, and Central Kyzylkum regions. Ya.B. Aysanov et al., 1984.
Synonym:
Lithology and Thickness
Thick and medium-bedded, often crinoidal limestones, gray and dark gray in color, at the base of the section (Thickness 1.5m) - basal bauxite horizon. Thickness 150m.
Lithology Pattern:
Limestone
Relationships and Distribution
Lower contact
Lies with erosion, without visible angular unconformity on the Serkeshkuduk Fm.
Upper contact
Upper contact is unclear.
Regional extent
Central Kyzylkum, Bukantau, according toi Ya.B. Aysanov et al. (1981, 1984), along the northern slope of the Bukantau carbonate ridge, as a discontinuous narrow strip.
GeoJSON
null
Fossils
Foraminifera - Tuberitina maljavkini Mikh., Endothyra ex gr. bradyi M., Eostaffella sp., and others
Age
Age according to foraminifera - late Bashkirian-early Moscovian.
Age Span:
Beginning stage:
Bashkirian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
323.40
Ending stage:
Moscovian
Fraction up in the ending stage:
0.5
Ending date (Ma):
311.09
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Z.M.Abdusamitova – In: GeoGPT translation of: “Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)”