Nazarin Fm
Period:
Devonian
Age Interval:
Upper Devonian (Famennian), F10b
Province:
Fergana
Type Locality and Naming
The origin of the name is not established. T.S. Zamaletdinov in 1962 (460, p. 142). V.B. Goryanov, A.I. Goncharov in 1960 identified it under the name "Kshutskaya suite" (176).
Upper formation in Alay Gr.
Synonym: Nazarinskaya Suite, Назаринская св.
Lithology and Thickness
Thin-bedded dolomites, in the lower part, dolomitic limestones are sometimes noted. Rare layers of clayey rocks are encountered. Thickness 370-775m.
Lithology Pattern:
Dolomite
Relationships and Distribution
Lower contact
Along the stratigraphic position, it lies on the Adyrakou Fm
Upper contact
According to, or with erosion, is overlain by the Karadavan Fm
Regional extent
Alay range.
GeoJSON
null
Fossils
Brachiopods - Cyrtospirifer archiaci Murch., C. verneuili Murch., C. brodi Vern., C. romanowskii Nal. and others, and foraminifera
Age
The Famennian age is substantiated by brachiopods and foraminifera.
Age Span:
Beginning stage:
Famennian
Fraction up in beginning stage:
0.1
Beginning date (Ma):
369.92
Ending stage:
Famennian
Fraction up in the ending stage:
1.0
Ending date (Ma):
359.30
Depositional setting
Depositional pattern:
Additional Information
Compiler:
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)"