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

Sardobin Formation

Sardobin Fm

Period:

Cretaceous

Age Interval:

Valanginian - middle Aptian, Z5

Province:
Zarafshan-N.Gissar

Type Locality and Naming

By the Sardoba elevation, Western Uzbekistan. O.S. Vyalov, 1947 (158, p.133).

Synonym: Sardobin Suite, Сардобинская св.

Lithology and Thickness

I.S. Suleymanov identified three sub-suites.

Upper - variegated conglomerates, gravelites, clays, siltstone (aleurolites). Thickness 24-30m.

Middle - gray, bright-red sandstones with layers of clays, siltstone (aleurolites), with lenses of conglomerates. Thickness 25-30m.

Lower - red with layers of gray clays, siltstone (aleurolites), sandstones, gravelites Thickness 5-50m.

Lithology Pattern:

Aus Conglomerate

Relationships and Distribution

Lower contact

The suite transgressively overlies the Paleozoic and Jurassic

Upper contact

It is overlain with erosion by the Azkamar Fm.

Regional extent

Karaiz, Tuvahtau, foothills of the Karatepin Mountains. Wells

GeoJSON

null

Fossils

Middle – Contains foraminifera - Astocolus doriphorus (Chelil.), Sornayina obscura Suleim.; ostracods - Orthonotacythere ramulosa Sharap., Asciocythere cf. parabrevis Andrv. et Oertli.

Age

It is conditionally attributed to the Valanginian - middle Aptian; Along O.S. Vyalov (158), - to the Neocomian - Aptian; Along I.S. Suleymanov (464), and in the Strat. vol. - to the Berriasian - Aptian. (445; 446).

Age Span:

Beginning stage:

Valanginian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

137.70

Ending stage:

Aptian

Fraction up in the ending stage:

0.7

Ending date (Ma):

115.66

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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