Telibay Formation

Telibay Fm

Period:

Ordovician

Age Interval:

Floian-Dapingian, K2

Province:
Kyzylkum Region

Type Locality and Naming

Along the col. Telibay, S. Bukantau, Central Kyzylkum. Ya.B. Aysanov et al., 1984f., 1986f.

Synonym: Telibay Suite, Телибайская св.

Lithology and Thickness

Claystones, clay-siliceous slates, platy jasper-like cherts with layers and lenses of fine-grained aleuropelites and gray, bluish-greenish-gray, greenish-gray limestones. Thickness 200m.

Lithology Pattern:

Claystone

Relationships and Distribution

Lower contact

The Telibay Fm lies conformably on the Bokteken Fm

Upper contact

It is overlain conformably by the Lyupek Fm

Regional extent

Central Kyzylkum, Southern Bukantau, in the form of narrow strips (width 0.1-0.5 km) south of the Irlyr carbonate ridge. It is correlated with the Jalatar Fm and Kurbanazin Fm of the S. Nuratau Range (165; 460).

GeoJSON

null

Fossils

In platy cherts, numerous traces of mud-eater activity, worm burrows; in limestones - brachiopods and crinoids. Conodonts - Drepanodus cf. proteus Lind., D. subarcuatus Furn., Drepanoistodus cf. forceps (Lind.), Paroistodus parallelus (Pand.), Periodon Flabellum Lind. and others, typical for the Arenigian; upper radiolarians - Entactinia cf. complanata Naz., E. cf. akdjmensis Naz., E. aff. elongata Naz., Ulcundia sp.

Age

Middle Ordovician of the lower part is substantiated by conodonts. Ya.B. Aysanov et al. (1984f, 1986f), A.K. Bukharin et al. (1990f.) attributed it to the Middle Ordovician; on the geological map of the geodynamic polygon of the Kyzylkum, the suite is dated as early-Middle Ordovician (Arenig-Llandeilo) (Abdurazimova et al., 1993f.).

Age Span:

Beginning stage:

Floian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

477.08

Ending stage:

Dapingian

Fraction up in the ending stage:

1.0

Ending date (Ma):

469.42

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)”