Karaulatin Formation

Karaulatin Fm

Period:

Carboniferous

Age Interval:

Lower Carboniferous (Visean), CK13

Province:
Chatkal-Kuramin Region

Type Locality and Naming

By Mount Karaul Tepa, upper reaches of the Gavasay River, southern slope of the Chatkal Ridge. S.V. Litovchak et al., 1985.

Synonym: Karaultin Suite, Караулатинская св.

Lithology and Thickness

Gray crystalline limestones with interlayers of crinoidal, brachiopod varieties, as well as microgranular dolomites. In the upper part of the suite, more layered limestones with nodules, lenses of flint on the surfaces of bedding. Thickness 240-260m.

Lithology Pattern:

Limestone

Relationships and Distribution

Lower contact

Overlies conformably on the Aktash Fm

Upper contact

overlain conformably by the Chukurchak Fm

Regional extent

Chatkal Ridge, Aktaush and Echki-Too mountains, basin of the Koksaray River.

GeoJSON

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Fossils

Foraminifera Eostaffella minutissima Raus., Archaediscus convexus Grozd et Leb., Asteroarchaediscus ovoides (Raus.); brachiopods - Moderatoproductus sarsimbaii (Serg.), Gigantoproductus mirus Fred., Striatifera striata Fisch.; corals Ganganophillum sp., Aulina carinata Carr., Litostrotion sp.

Age

The Visean (late Visean) age of the suite is substantiated by foraminifera, brachiopods and corals.

Age Span:

Beginning stage:

Visean

Fraction up in beginning stage:

0.6

Beginning date (Ma):

336.90

Ending stage:

Visean

Fraction up in the ending stage:

0.8

Ending date (Ma):

333.62

Depositional setting

Depositional pattern:

Additional Information

Compiler:

I.M. Nigmadzhanov – In: GeoGPT translation of: “Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)”