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
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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)”