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

Kashkadarya Formation

Kashkadarya Fm

Period:

Devonian

Age Interval:

, Z1a

Province:
Zarafshan-N.Gissar

Type Locality and Naming

Named after the Kashkadar'ya River, Zarafshan Range. E. G. Fedorov et al., 1987. Stratotype on the watershed of the Kashkadarya and Jindadyarya rivers, east of the village of Madmon.

Synonym: Kashkadary Reef Complex, Кашкадарьинский рифовый компл.

Lithology and Thickness

Reef formations: organogenic polymictic massive limestones with layers of limestone breccias and black flaggy cherts. Thickness 220-310m.

Lithology Pattern:

Reef limestone

Relationships and Distribution

Lower contact

Normally overlies the Khodzhakurgan Fm

Upper contact

Overlain by the Akbasay Fm

Regional extent

Zarafshan Ridge.

GeoJSON

null

Fossils

Contains rugose corals - Sociophyllum longiseptatum (Bul.), S. tarosum (Schlüt.), Neomphyma minima (Ivania), Acanthophyllum vermiculare (Goldf.), Dendrostella trigeme (Quenst.); brachiopods Stringocephalidae; conodonts - Polygnathus costatus costatus Kl., P. cf. eiflius Bish. et Ziegl., P. varcus Stauf., P. pseudofoliatus Witt., Tortodus kockelianus kockelianus (Bish. et Ziegl.).

Age

Age Span:

Beginning stage:

Eifelian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

394.30

Ending stage:

Eifelian

Fraction up in the ending stage:

1.0

Ending date (Ma):

385.30

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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