Kyzylkalin Formation

Kyzylkalin Fm

Period:

Cretaceous

Age Interval:

middle-upper Albian, U5

Province:
Ustyurt-Sultanuzdag

Type Locality and Naming

At the Kyzylkala fortress, South Pre-Aral. S.S. Shulz (Jr.), 1967 (509, p.14). Stratotype not specified. Parastratotype at Hodzhakulsay.

Synonym: Kyzylkalinskaya Suite, Кызылкалинская св.

Lithology and Thickness

Sandstones, silty (aleuritic) clays, conglomerate interlayer, replaced by sandstones. Thickness 20-55m.

Lithology Pattern:

Clayey sandstone

Relationships and Distribution

Lower contact

Lies with erosion on the Sultanbobin Fm and transgressively on the Istemes Fm

Upper contact

It is overlain with erosion by the Hodzhakul (Khodzhakul-Cret Fm).

Regional extent

Sultanuizdag range, Kokcha ridge and adjacent areas of the South-East Kyzylkum.

GeoJSON

null

Fossils

Contains marine bivalve mollusks - Modiolus bucharensis Rom., Korobkovitriginia korobkovi Sav., Linotrigonia ninae Sav., gastropods - Nerineoptyxis amudariensis (Pchel.), Pseudomesalia subindica (Pchel.); foraminifers Ammobaculoides explanatus Mam., Evolutinella albensis Nikit. et Mjatl., Trochammina ex gr. kugitangensis N. Byk., T. planoconvexa Mam.

Age

Belongs to the upper Albian; according to A., - to the Senonian; according R.P. Soboleva, - to the middle-upper Albian (508).

Age Span:

Beginning stage:

Albian

Fraction up in beginning stage:

0.8

Beginning date (Ma):

103.04

Ending stage:

Albian

Fraction up in the ending stage:

1.0

Ending date (Ma):

100.50

Depositional setting

Depositional pattern:

Additional Information

Compiler:

I.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)”