Cenozoic

Cretaceous

Jurassic

Triassic

Permian

Carboniferous

Devonian

Silurian

Ordovician

Cambrian

Neoproterozoic

Main source = Baratov, R.B., et al. (1976). Subdivisions of stratified and intrusive rocks of Tajikistan. Publishing House "Donish", Dushanbe, 269 pp. plus tables. Provided by Dr. Jovid Aminov, Nazarbayev University, Astana, Kazakhstan Translated to English by the GeoGPT group, Zhejiang Lab, Hangzhou, China--see About

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Kattakamysh Formation

Kattakamysh Fm

Period:

Cretaceous

Age Interval:

Upper Turonian (K₂¹), K1, D1, C2, C2a, S3, S4, S5

Province:
SW Tajik, North Tajik, Central W Tajik

Type Locality and Naming

Includes in Khation Region, Sughd Region, Darvaz district, Dushanbe - west Shirkent-Luchob, Dushanbe - east Shirkent-Luchob.

Synonym:

Lithology and Thickness

The Santonian stage (Kattaqamysh horizon) in the Kafirnigan district is two-membered. The lower part is represented by greenish-gray clays with interbeds of sandstones, limestones, and shell limestones with a thickness of 30-100 m. The upper part of the Santonian stage in the Guadalupan Asian region (Iljin) is formed by interbedded colorful clays, sandstones, siltstones, and gypsums with a thickness of $30-180$ m. The thickness of the Santonian stage in the Kafirnigan area is 90 to 210 m.

Lithology Pattern:

Sandy claystone

Relationships and Distribution

Lower contact

Overlies the Akrabat Fm.

Upper contact

Underlies the Sarykamysh Fm.

Regional extent

Afghan-Tajik Basin.

GeoJSON

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Fossils

Lower part in the Kafirnigan district contains remains of sea urchins Hemiaster akkaptschigensis Schmidt; bivalves Liostrea patina Meek et Hayden, Exogyra decussata Goldf., Megatrigonia syrdariensis (Arkh.), Gyropleura vakhschensis Bobkova; ammonites Stantonoc ?

Age

Santonian

Age Span:

Beginning stage:

Santonian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

85.70

Ending stage:

Santonian

Fraction up in the ending stage:

1.0

Ending date (Ma):

83.65

Depositional setting

Depositional pattern:

Additional Information

Compiler:

Extracted from Baratov, R. B. (1976). Subdivisions of stratified and intrusive rocks of Tajikistan. Donish, Dushanbe, 276.