Oguztau Fm
Period:
Devonian
Age Interval:
Frasnian, K2
Province:
Kyzylkum Region
Type Locality and Naming
By the Oguztau Mountain, Bukantau, Central Kyzylkum. Ya.B. Aysanov et al., 1984.
Synonym: Oguztauskaya Suite, Огузтауская св.
Lithology and Thickness
Dolomites with lenses of cherts. Thickness up to 100 m.
Lithology Pattern:
Dolomite
Relationships and Distribution
Lower contact
Conformably, with a gradual transition, lies on the Dzhetyimtau Fm (Jetymtau suite)
Upper contact
It is conformably overlain by the Tashibulak Fm (460).
Regional extent
Central Kyzylkum, as a narrow sublatitudinal strip along the slope and watershed part of the Bukantau carbonate ridge.
GeoJSON
null
Fossils
Stromatoporoids Paramphipora ex gr. abluta Yavor., Amphipora patockensis Riab., A. koivensis Riab., brachiopods - Theodossia anossoffi Yorn., T. cf. schubkei Kays.
Age
Age is determined by stromatoporoids of the Frasnian stage.
Age Span:
Beginning stage:
Frasnian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
378.90
Ending stage:
Frasnian
Fraction up in the ending stage:
1.0
Ending date (Ma):
371.10
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Z.M.Abdualimova – In: GeoGPT translation of: “Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)”