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

Sarykeriz Formation

Sarykeriz Fm

Period:

Silurian

Age Interval:

Wenlock- Upper Ludlow, N1

Province:
Nuratau

Type Locality and Naming

Along the Sarykeriz village, Shokhetau mountain, N. Nuratau ridge. R.R. Usmanov et al. in 1991 when compiling the reference legend for the geological map of the North-Nurata region. Stratotype approximately 2 km southwest of the Sarykeriz village.

Synonym: Sarykeriz Suite, Сарыкияская св.

Lithology and Thickness

Gray, dark gray calcareous, carbonaceous-clayey, silty (aleurolitic) slates with layers of siltstone (aleurolites) and clayey limestones. Thickness no more than 200m.

Lithology Pattern:

Pelagic marl

Relationships and Distribution

Lower contact

Contacts are tectonic.

Upper contact

Contacts are tectonic.

Regional extent

Northern Nuratau ridge, Shokhetau structure, in tectonic scales. The lower part of the suite is an age and lithological analogue of the Kyzkolsay Fm; the upper part - the East-Daristan Fm, exposed in the Mikhin-Daristan structure.

GeoJSON

null

Fossils

In the lower part contains Wenlock graptolites - Monograptus (Testograptus) testis Barr., Cyrtograptus sp., Monoclimacis fleminge (Salter.); in the upper part - Ludlow graptolites - Neodiversograptus nilssoni (Lapw.), Pseudomonoclimacis ausykensis Abd., Bohemograptus bohemicus (Barr.), Lobograptus crinitus (Wood.), L. scanicus (Tullb.) and others (4; 6; 165).

Age

Age Span:

Beginning stage:

Gorstian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

426.74

Ending stage:

Gorstian

Fraction up in the ending stage:

1.0

Ending date (Ma):

425.01

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)”