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

Kakir Formation

Kakir Fm

Period:

Devonian

Age Interval:

Eifelian, N2a

Province:
Nuratau

Type Locality and Naming

By native Kakyrs (ephemeral), upper reaches of the left tributary of the Aidynsay. I.A. Kim et al., 1987, previously identified as layers by A.I. Kim. Stratotype of the Kakir Fm is located.

Synonym: Kakyr Suite, Какирская св.

Lithology and Thickness

Light gray, massive, thickly and unevenly bedded biomorphic limestones. Thickness 90-117m.

Lithology Pattern:

Limestone

Relationships and Distribution

Lower contact

Contacts with surrounding formations are tectonic.

Upper contact

Contacts with surrounding formations are tectonic.

Regional extent

North Nuratau Range, southwestern part of the Jalpak Mountains (Dzhalpak Mtns), upper reaches of the left tributary of the Aidynsay River - stratotype locality, where the composite

GeoJSON

null

Fossils

Eifelian age is determined by brachiopods Schizophoria striata (Schlott.), Clorinda pseudolinguifera Kozl, Uncinulus parallelepipedus Bronn., Vagrania (Vagrania) kolymensis Nal., Atrypa devoniana Fent. et Fent., Desquamatia totaensis Khod. and others; trilobites - Proetus lazutkini Tchern., P. peetri Tchern. and others; conodonts - Polygnathus parawebbi Chat., P. trigonicus Bischoff. et Ziegler, P. angusticostatus Wittekind, P. robusticostatus Bischoff. et Ziegler.

Age

Assigned to the Eifelian of the Middle Devonian. V.S. Korsakov et al. (1993), in the monograph (165) and on the State Geological Map-500 of Uzbekistan (460) considered them Eifelian of the Middle Devonian. Put as 50% up in Eifelian for graphics - "Eifelian [Coeval with Taraklin Fm? Contacts are tectonic.]

Age Span:

Beginning stage:

Eifelian

Fraction up in beginning stage:

0.5

Beginning date (Ma):

389.80

Ending stage:

Eifelian

Fraction up in the ending stage:

1.0

Ending date (Ma):

385.30

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)”