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

Kuruk Olistrostrome Formation

Kuruk Olistrostrome Fm

Period:

Carboniferous

Age Interval:

Upper Moscovian, N4

Province:
Nuratau

Type Locality and Naming

Along the Kuruksay stream, northern foothills of the N. Nuratau range. I.A. Pyanova, V.S. Korsakov in 1976 (481, p. 15).

Synonym: Kuruksayskaya Formation (Olistostrome), Курукская св. (ополистострома)

Lithology and Thickness

Gray-green and dark-green claystone (argillites) and slates, including fragments and boulders of limestones with late Cambrian trilobites, dolomites with microphytolites of the late Proterozoic Bogambir Fm, greenish-gray sandstones and variegated slates of the Ilonchisay Fm, and metadiabasites and spilites of the Shavaz Fm.

Lithology Pattern:

Aus Conglomerate

Relationships and Distribution

Lower contact

Schematic stratigraphic column indicates the lower contact as Mikhin Fm

Upper contact

Schematic stratigraphic column indicates the upper contact as Farishk Fm

Regional extent

A strip in the northern foothills of the North Nuratau range, northeast of the village of Ilonchi, extending 1.3 km to the north-south.

GeoJSON

null

Fossils

Age

Based on the presence of fragments of the Shavaz Fm and considering the late Moscovian time of formation of olistostromal thicknesses in the Kyzylkum-Nurata region, the Kuruk olistostrome is attributed to the upper substage of the Moscovian stage 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. Abdurazimova – In: GeoGPT translation of: “Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)”