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
null
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)”