Shirgalan Fm
Period:
Devonian
Age Interval:
Givetian, N1
Province:
Nuratau
Type Locality and Naming
Along Shyrghalansay, Shokhetau Mountains, N. Nuratau ridge. R., R. Usmanov et al. in 1993 (Korsakov et al., 1993). Stratotype in Shyrghalansay.
Synonym: Shirgalan Suite, Ширгаланская св.
Lithology and Thickness
Thin-bedded, organogenic-detrital and aphinitic limestones. Thickness 67-200m.
Lithology Pattern:
Reef limestone
Relationships and Distribution
Lower contact
Contacts with surrounding formations are tectonic (165).
Upper contact
Contacts with surrounding formations are tectonic (165).
Regional extent
Northern Nuratau ridge, Shokhetau Mountains.
GeoJSON
null
Fossils
Age
Middle Devonian Givetian
Age Span:
Beginning stage:
Givetian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
385.30
Ending stage:
Givetian
Fraction up in the ending stage:
1.0
Ending date (Ma):
378.90
Depositional setting
Depositional pattern:
Additional Information
Compiler:
V.V. Mikhailov, 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)”