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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Youngest Karamazar Rocks Formation

Youngest Karamazar Rocks Fm

Period:

Cretaceous

Age Interval:

Campanian (undifferentiated - K2), S1

Province:
North Tajik

Type Locality and Naming

Synonym: Upper Cretaceous deposits, youngest Cretaceous rocks

Reference section:

Lithology and Thickness

Sandy_claystone. They are represented by gray sandstones and colorful clays with a thickness of 12 m, followed by sandstones and dolomites with a thickness of 6 m.

Lithology Pattern:

Sandy_claystone

Relationships and Distribution

Lower contact

They are exposed near the village of Shaidan, where they lie in visible conformity on pink sandstones and conglomerates of the Santonian.

Upper contact

They are overlain with an unconformity by Paleogene deposits.

Regional extent

In the Karamazar district, Upper Cretaceous deposits are encountered sporadically at individual points, poorly studied. Upper Cretaceous deposits are distinguished in the Karamazar, Turkestan, Zarafshan-Gissar, Karategin, Zaalay, Darvaz, Sarykol, and the Central Pamir regions.

GeoJSON

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Fossils

In sandstones and dolomites, characteristic upper Campanian bivalves Lopha (Arctostrea) falcata (Mort.), Chlamys dujardini (Roem.) have been found.

Age

The youngest Cretaceous rocks in the Karamazar area are Campanian.

Age Span:

Beginning stage:

Campanian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

83.65

Ending stage:

Campanian

Fraction up in the ending stage:

1.0

Ending date (Ma):

72.17

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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