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

Uryuklin Formation

Uryuklin Fm

Period:

Silurian

Age Interval:

Llandovery, N5a

Province:
Nuratau

Type Locality and Naming

Near the Uryukli settlement, northern slope of the Turkestan Range. A.N. Golikov in 1985 (165, p.51). Stratotype to the east of the Uryukli settlement.

Synonym: Uryukshinskaya Suite, Уроклинская св.

Lithology and Thickness

Uniform flyschoid thickness - gray and greenish-gray, medium- and thick-bedded siltstones, alternating with layers of bluish-gray and black argillite shales. Thickness more than 300-400 m.

Lithology Pattern:

Siltstone

Relationships and Distribution

Lower contact

Overlies the deposits of the Berkutlin Fm.

Upper contact

In the Zamin basin, it is overlain by the Dugabin Fm

Regional extent

Water divide and western parts of the northern slope of the Chumkartau Mountains; southwestern sector of the Kyzyl-Mazar uplift, valleys of the Guralash, Baykungur, and Lyatoband rivers.

GeoJSON

null

Fossils

with numerous graptolite remains: Petalograptus tenuis (Barr.), P. ovatus (Barr.), Monograptus halli (Barr.), M. pandus(Lapw.), M. marri (Perner.), Spirograptus minor (Bouč.), S. turriculatus (Barr.), Oktavites spiralis (Gein.), Streptograptus nodifer (Törnq.), Globosograptus crispus (Lapw.), Stomatograptus grandis grandis (Suess.), Retiolites geinitzianus Barr., Cyrtograptus lapworthi Tullb.

Age

Early Silurian, Llandovery (Telychian). (165,460)

Age Span:

Beginning stage:

Telychian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

438.59

Ending stage:

Telychian

Fraction up in the ending stage:

1.0

Ending date (Ma):

432.93

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)”