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

Saukbulak Formation

Saukbulak Fm

Period:

Carboniferous

Age Interval:

Lower Carboniferous (upper Tournaisian), CK9-9b

Province:
Chatkal-Kuramin Region

Type Locality and Naming

Along the Saukbulak river, left tributary of the Akhangaran river, northern slope of the Kuramin ridge. I.M. Nigmadzhanov et al., 1992. Stratotype in the lower reaches of the Urgaz River, left bank, northeastern slope of Urgaz-Karatau.

Synonym: Saukbulak Suite, Саукбулакская св.

Lithology and Thickness

Gray limestones, often with a bluish tint, predominantly medium-bedded, clotted-nodular, clotted-algal, clotted-spheroidal, with rare mud and detritus. Distinguishing feature from overlying and underlying subdivisions - absence of siliceous inclusions and presence of oncoid-like algal formations. Thickness 120-160m.

Lithology Pattern:

Limestone

Relationships and Distribution

Lower contact

Conformably overlies the Tutbulak Fm (lower reaches of the Urgaz and Saubulak rivers) or with stratigraphic unconformity on the Kulyat Fm dolomites (Almalyk River, Kalkanata Mountains).

Upper contact

Conformably overlain by the Sallyatash Fm (Tkachev et al., 1996). (165).

Regional extent

Kuraminsky Ridge, Kalkanata Mountains, Almalyk, Urgaz, Saubulak basins.

GeoJSON

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Fossils

Contains foraminifera - Septabrunsiina krainica (Lip.), Endothyra latispiralis Lip., Spinoendothyra kosvensis (Lip.); brachiopods - Composita megala (Toln.), Rugosochonetes sp.; conodonts - Neopolygnathus Carina (Hass.), Eotaphrus bultyncki (Groes.), Clydagnathus cavusvormis R.A. et D.

Age

Lower Carboniferous (Tournaisian)

Age Span:

Beginning stage:

Tournaisian

Fraction up in beginning stage:

0.8

Beginning date (Ma):

349.24

Ending stage:

Tournaisian

Fraction up in the ending stage:

1.0

Ending date (Ma):

346.73

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)”