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

Kurpin Formation

Kurpin Fm

Period:

Carboniferous

Age Interval:

Upper Moscovian, N5, N5a

Province:
Nuratau

Type Locality and Naming

Along the village of Kurpa, Malguzar Mountains. V.A. Tabachkov et al. in 1964 (460, p. 193).

Synonym: Kurpinian Suite, Курпинская св.

Lithology and Thickness

Variegated polymictic sandstones, siltstone (aleurolites), claystone (argillites), and micaceous slates with layers of black limestones, calcareous siltstone (aleurolites), gravellites; at the base - conglomerates and gravellites. In the lower and middle parts of the section, large olistoliths of light-gray limestones are noted. Thickness more than 300 m.

Lithology Pattern:

Fine-grained sandstone

Relationships and Distribution

Lower contact

Transgressively with angular unconformity, it lies on different horizons of Bashkirian and Lower Bashkirian deposits or conformably on the Baras Beds Fm

Upper contact

According to I.M. Nigmadzhanov; the upper boundary is unknown.

Regional extent

Along the northern slopes of the Malguzar Mountains, along the middle course of the Kurpa, Uab, and Kullisai rivers.

GeoJSON

null

Fossils

In layers of calcareous siltstone (aleurolites), Late Moscovian conodonts - Idiognathodus obliguus Kos. et Koz., I. delicatus Gun., Streptognathodus parvus Dunn., Gondolella donbassicus Kos. et Koz., G. magna St. et Pl. (165).

Age

According to conodonts, the Fm belongs to the Upper Moscovian substage. In the Strat. sl. (443) and on the State Geol. Map-500 of Uzbekistan (460), it is referred to the Upper Moscovian substage of the Middle Carboniferous.

Age Span:

Beginning stage:

Moscovian

Fraction up in beginning stage:

0.6

Beginning date (Ma):

310.27

Ending stage:

Moscovian

Fraction up in the ending stage:

1.0

Ending date (Ma):

307.02

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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