Shumtau Fm
Period:
Paleogene
Age Interval:
Rupelian, F4
Province:
Fergana
Type Locality and Naming
Along the Shumtaus ridge, northern Akbel mountain, northwest Fergana. I.V. Plechenco, A.K. Voronkov, 1965 (347, p.32-33). The term is not used.
Synonym: Shumtau Suite, Шумтауская св.
Lithology and Thickness
Red-colored aleuritic clays and clayey siltstone (aleurolites) with layers of sandstones. Thickness 750m
Lithology Pattern:
Clayey sandstone
Relationships and Distribution
Lower contact
Underlying deposits are not specified.
Upper contact
Along the overlay, it is covered by the Bardamtul Fm
Regional extent
Northwest Fergana.
GeoJSON
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Fossils
Along A.A., it belongs to the lower Oligocene (444). Along B.I. Pinhasov, it corresponds to the Oligocene-Miocene red-colored molasse formation of the Lower Tien Shan Gr, which in Fergana are represented by the Sumsar-Paleog Fm and Mailisay Fm.
Age
Rupelian
Age Span:
Beginning stage:
Rupelian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
33.90
Ending stage:
Rupelian
Fraction up in the ending stage:
1.0
Ending date (Ma):
27.29
Depositional setting
Depositional pattern:
Additional Information
Compiler:
B.I. Pinhasov – In: GeoGPT translation of: “Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)”