Kumyshkan Fm
Period:
Quaternary
Age Interval:
Eopleistocene-Neopleistocene (lower link), CK10
Province:
Chatkal-Kuramin Region
Type Locality and Naming
By the village of Kumyshkan, Parkent district, Tashkent region. T.M. Kremlyakova, M.V. Mikulin, M.P. Safarov (Safarovidr., 1999f.).
Synonym: Kumyshkanskaya Suite, Кумышканская св.
Lithology and Thickness
Reddish-brown paleosols with distinct illuvial layers (shohi) and separating loesses (silt loams). Thickness up to 30m
Lithology Pattern:
Soil
Relationships and Distribution
Lower contact
Lies on siltstone (aleurolites) ("stone loesses") of the upper Pliocene without visible unconformity
Upper contact
It is conformably overlain by deposits of the Zarkent Fm.
Regional extent
Interfluve of the Chirchik and Angren rivers, foothill landscape zone.
GeoJSON
null
Fossils
Age
In the K. suite, 4 pedocomplexes are distinguished, the oldest of which corresponds to the level of the Jaramillo paleomagnetic episode.
Age Span:
Beginning stage:
Calabrian
Fraction up in beginning stage:
0.2
Beginning date (Ma):
1.59
Ending stage:
Calabrian
Fraction up in the ending stage:
0.6
Ending date (Ma):
1.18
Depositional setting
Depositional pattern:
Additional Information
Compiler:
M.V. Mikulin – In: GeoGPT translation of: “Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)”