Sayat Fm
Period:
Neogene
Age Interval:
Gelasian, K1-K9
Province:
Kyzylkum Region
Type Locality and Naming
Along the village of Sayat, middle reaches of the Amu Darya River, Turkmenistan. G.I. Amursky, 1958 (320, p.19).
Synonym: Sayat Suite, Саясткая св.
Lithology and Thickness
Alluvial polymictic sands and sandstones with gravel and pebbles of Paleozoic rocks. Thickness 10-15m.
Lithology Pattern:
Coarse-grained sandstone
Relationships and Distribution
Lower contact
With erosion, it overlies the Dengizkul-Neog Fm and, together with the latter, is capped by a single carbonate weathering crust, represented by concretionary sandstones (1-3 m).
Upper contact
At the foot of the Dengizkul-Sayat outliers or plateaus, the Sadyvar Fm and Tashakyr Fm are embedded.
Regional extent
Karakum, Southwest Kyzylkum, Karshinsky Steppe.
GeoJSON
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Fossils
Contains freshwater Pliocene ostracods.
Age
Upper Pliocene Akchagyl regional stage (middle part) (?). A. conditionally attributed the Sayat Fm to the Upper Pliocene-Lower Quaternary deposits. The age of the suite is conditionally mid-Akchagyl.
Age Span:
Beginning stage:
Gelasian
Fraction up in beginning stage:
0.5
Beginning date (Ma):
2.19
Ending stage:
Calabrian
Fraction up in the ending stage:
1.0
Ending date (Ma):
0.77
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)”