Syrt Fm
Period:
Carboniferous
Age Interval:
Tournaisian, N2
Province:
Nuratau
Type Locality and Naming
Along the Syrt River, N. Nuratau ridge. R.R. Usmanov et al. in 1991 (1999).
Synonym: Syrt Suite, Сыртская св.
Lithology and Thickness
Light gray aphanitic and oolitic thin-bedded limestones with layers of crinoidal limestones. Thickness is more than 100 m.
Lithology Pattern:
Oolitic limestone
Relationships and Distribution
Lower contact
Presumably conformably overlies the Obay Fm
Upper contact
upper contact unknown.
Regional extent
Northern Nuratau ridge, Dzhalpak city, Merishkor structure. According to A., it crowns the schistose section of the Merishkor klippe.
GeoJSON
null
Fossils
Contains brachiopods and foraminifera - Archaeosphaera sp., Parathurammina sp., Septabrunsiina cf. minuta (Lip.), Paracaligella cf. antropovi Lip. and others.
Age
Belongs to the Tournaisian stage of the Lower Carboniferous.
Age Span:
Beginning stage:
Tournaisian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
359.30
Ending stage:
Tournaisian
Fraction up in the ending stage:
1.0
Ending date (Ma):
346.73
Depositional setting
Depositional pattern:
Additional Information
Compiler:
R.R. Usmanov – In: GeoGPT translation of: “Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)”