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

Charshangin Formation

Charshangin Fm

Period:

Cretaceous

Age Interval:

upper Aptian-lower Albian, B1

Province:
Bukhara-SW Gissar

Type Locality and Naming

Along the village of Charshanga, E. Turkmenistan. Kh.Kh. Mirkamalov, M.E. Egamberdyev, 1969 (300, p.66). Stratotype on the northern slope of the Kundalyangtau ridge, 3km west of the village of Charshanga. Middle formation of the Kamprek Gr. (51)

Enters the Karakuz Horizon. (452)

Synonym: Charshangin Suite, Чаршангинская св.

Lithology and Thickness

Divided into two subsuites.

Upper - dark and greenish-gray clays with layers of siltstone (aleurolites) and sandstones, at the base with phosphorite pebbles and redeposited (from the lower subsuite). Thickness 10-35m.

Lower - dark gray clays with concretions. Thickness 30-75m.

Lithology Pattern:

Sandy_claystone

Relationships and Distribution

Lower contact

The formation conformably overlies the Kulkamysh Fm

Upper contact

It is conformably overlain by the Kallamazar Fm.

Regional extent

Southwest Gissar, Bukhara-Karshinsky district. Corresponds to the upper part of the Karakuz Fm.

GeoJSON

null

Fossils

Age

Attributed to the upper Aptian (H. jacobi zone) and lower part of the lower Albian.

Age Span:

Beginning stage:

Aptian

Fraction up in beginning stage:

0.9

Beginning date (Ma):

114.02

Ending stage:

Albian

Fraction up in the ending stage:

0.1

Ending date (Ma):

111.93

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)”