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

Katadzhar Formation

Katadzhar Fm

Period:

Silurian

Age Interval:

Lower Wenlock, Z5

Province:
Zarafshan-N.Gissar

Type Locality and Naming

Along the Katadzhar Mountains, Zirabulak uplift. V.S. Korsakov et al., 1984

Synonym: Katadjar Fm, Katadzhar Suite, Катадаярская св.

Lithology and Thickness

Thin-bedded, dark, clayey, nodular limestones, gray dolomitic limestones, in the upper part dark-gray limestones with layers of pinkish-gray siltstone (aleurolites). Thickness 70-200m.

Lithology Pattern:

Dolomitic limestone

Relationships and Distribution

Lower contact

Conformably overlies the Daraitut Fm

Upper contact

Gradually transitions into the Terikbabin Fm

Regional extent

South-eastern part of the Zirabulak Mountains (Squallyaul, Jilga, and Sykpi regions), Turytau Mountains. Age equivalent of the Uchkuduk Fm. Kuldzhuktau. (165; 460).

GeoJSON

null

Fossils

Graptolites - Monoclimacis sp. (ex gr. incomplata Chal.), M. sp. (ex gr. vomerina Nich.); tabulates - Catenipora gotlandica Yabl. and others.

Age

Early Wenlock age is established by graptolites

Age Span:

Beginning stage:

Sheinwoodian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

432.93

Ending stage:

Sheinwoodian

Fraction up in the ending stage:

1.0

Ending date (Ma):

430.62

Depositional setting

Depositional pattern:

Additional Information

Compiler:

V.S. Korsakov – In: GeoGPT translation of: “Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)”