Kalachin Fm
Period:
Cretaceous
Age Interval:
Upper Cretaceous (Cenomanian), F9
Province:
Fergana
Type Locality and Naming
Named after the Kalachamazar Mountains, South Fergana. O.S. Vyalov, A.M. Gabrilian, 1947 (157, p.33-34). Stratotype not specified. Initially A.A. identified under the name Kanskaya suite (154; 166; 417; 433; 445).
Synonym: Kalachin Suite, Калачинская св.
Lithology and Thickness
Red, gray, coarse-grained conglomerates with lenses and interlayers of sandstones and gravels. Thickness 3-30m.
Lithology Pattern:
Aus Conglomerate
Relationships and Distribution
Lower contact
Overlies conformably on the Kyzylpilyal Fm
Upper contact
Overlain conformably by the Ustrichnaya Fm
Regional extent
South and Central Fergana.
GeoJSON
null
Fossils
Age
Conditionally assigned to the Middle Cenomanian. Along N.N. Verzilin (383; 446), - to the Cenomanian.
Age Span:
Beginning stage:
Cenomanian
Fraction up in beginning stage:
0.4
Beginning date (Ma):
97.86
Ending stage:
Cenomanian
Fraction up in the ending stage:
0.8
Ending date (Ma):
95.22
Depositional setting
Depositional pattern:
Additional Information
Compiler:
I.M. Abdurazimova – In: GeoGPT translation of: “Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)”