Borehole Conglomerate-sandstone Fm
Period:
Cretaceous
Age Interval:
Valanginian(?)-Barremian(?), U2
Province:
Ustyurt-Sultanuzdag
Type Locality and Naming
By the predominance of conglomerates and sandstones. Pitnyak uplift. I.M. Abdurazimova in 1996.
Synonym: Conglomerate-Sandstone Tolsha, Конгломерато-песчанистая т.
Lithology and Thickness
Coarse-clastic terrigenous rocks - conglomerates, sandstones, gravels gray, reddish-brown, brownish-gray with clay layers. Thickness 55-100m.
Lithology Pattern:
Aus conglomerate
Relationships and Distribution
Lower contact
Transgressively overlies the Paleozoic or Jurassic
Upper contact
Conformably overlain by the Borehole Sandy-siltstone Fm.
Regional extent
Pitnyak uplift, Khorezm depression. Boreholes.
GeoJSON
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Fossils
Contains in the upper part foraminifers - Miliolina kuznetzovae Mamed.
Age
Conditionally attributed to the Valanginian-Barremian. Used in the legend of the Pre-Aral subseries to geological maps m-ba 1: 200000,1998. For schematic stratigraphic representation, Base Valanginain for TEMP.
Age Span:
Beginning stage:
Valanginian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
137.70
Ending stage:
Valanginian
Fraction up in the ending stage:
1.0
Ending date (Ma):
132.60
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)”