Borehole Sandstone Fm
Period:
Cretaceous
Age Interval:
Maastrichtian, U2
Province:
Ustyurt-Sultanuzdag
Type Locality and Naming
By the predominance of sandstones, Khorezm depression. I.M.Abdurazimov in 1996.
Synonym: Paltauskaya (=Sandy) Topitsa, Песчаная т.
Lithology and Thickness
Sands, gray sandstones with layers of clays. Thickness 15-60m.
Lithology Pattern:
Clayey sandstone
Relationships and Distribution
Lower contact
Lies with erosion on the Borehole Terrigenous Fm
Upper contact
It is overlain with erosion by the Paleocene.
Regional extent
Boreholes. Used in the legend of the Pre-Aral subseries to geological maps of the m-ba 1:200000, 1998.
GeoJSON
null
Fossils
Contains foraminifera - Gavelinella ex gr. danica (Brotz.), Brotzenella complanata (Reuss.), Cibicidoides bembix (Marss.), Bolivina incrassata incrassata Reuss.
Age
Belongs to the Maastrichtian
Age Span:
Beginning stage:
Maastrichtian
Fraction up in beginning stage:
0.5
Beginning date (Ma):
69.11
Ending stage:
Maastrichtian
Fraction up in the ending stage:
1.0
Ending date (Ma):
66.04
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)”