Neogene

Paleogene

Cretaceous

Jurassic

Triassic

Permian

Carboniferous

Devonian

Silurian

Ordovician

Cambrian

Neoproterozoic

Mesoproterozoic

Paleoproterozoic

Main source = Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian) Translated to English by the GeoGPT group, Zhejiang Lab, Hangzhou, China--see About

Sultanbay Formation

Sultanbay Fm

Period:

Proterozoic

Age Interval:

Upper Riphean, N8

Province:
Nuratau

Type Locality and Naming

By the village of Sultanbai, south Nuratau ridge. I.A. Pyanova et al., 1986 (371, p.14). Stratotype in the Sultanbai village area.

Synonym: Sultanbai Suite, Султанбайская св.

Lithology and Thickness

Fthanites, microquartzites, and dark-gray dolomites. Thickness up to 100 m.

Lithology Pattern:

Dolomite

Relationships and Distribution

Lower contact

Conformably overlies terrigenous strata of the Ordovician-Silurian. [NOTE: This relationship would not make sense due to its assigned age.]

Upper contact

Schematic stratigraphic column indicates the upper contact as Chashmin Fm

Regional extent

Fragmentary in the southern Nuratau ridge (Sultanbai village area, Temirchik), Gobduntau mountain, and Marjanbulak elevation. It is an age and lithological analogue of the middle-upper part of the Kokpatass Fm and Tas-Kazgan Fm.

GeoJSON

null

Fossils

Contains microphytolites - Volvatella cf. zonalis Nar., Nubecularites uniformis Z. Zhur.

Age

On the State Geological Map-500 of Uzbekistan (460), it is dated to the late Riphean.

Age Span:

Beginning stage:

Tonian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

1,000.00

Ending stage:

Tonian

Fraction up in the ending stage:

1.0

Ending date (Ma):

720.00

Depositional setting

Depositional pattern:

Additional Information

Compiler:

Z.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)”