Kynyr-Perm Formation

Kynyr-Perm Fm

Period:

Permian

Age Interval:

Asselian, K5

Province:
Kyzylkum Region

Type Locality and Naming

By the Kynyr well, S. Tamdytau, Central Kyzylkum. N.P. Petrov et al., 1938.

Synonym: Kynyr Suite, Кынырская св.

Lithology and Thickness

Conglomerates, gravellites, sandstones, siltstone (aleurolites), and slates. Thickness up to 460m. Along Ya.B. Aysanov (1986), it is divided into two parts:

Upper - red-colored conglomerates, gravellites, sandstones, siltstone (aleurolites), claystones (argillites), limestones.

Lower - green-colored conglomerates, gravellites, sandstones, siltstone (aleurolites), claystones (argillites).

Lithology Pattern:

Aus Conglomerate

Relationships and Distribution

Lower contact

It sharply unconformably lies on the metamorphic rocks of the Uchkuduktau Fm of Proterozoic

Upper contact

It is overlain by Quaternary formations (443; 460).

Regional extent

Central Kyzylkum, northeastern end of the Tamdytau Mountains.

GeoJSON

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Fossils

Limestone pebbles of conglomerates contain Devonian, Carboniferous foraminifera, including late Moscovian forms (122).

Age

It is tentatively assigned to the Permian by comparison with the red-colored molasses of the Farish Fm of the S. Nuratau ridge. Previous researchers, considering the suite as a molasse formation, date it to the Moscovian epoch of the Middle Carboniferous (122; Bukharin et al., 1990; Aysanov et al., 1986) or Middle (late Moscovian) - Late Carboniferous (Abduazimova et al., 1993) or conditionally Permian (460).

Age Span:

Beginning stage:

Asselian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

298.89

Ending stage:

Asselian

Fraction up in the ending stage:

1.0

Ending date (Ma):

293.52

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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