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

Kofrun-Neog Formation

Kofrun-Neog Fm

Period:

Neogene

Age Interval:

Lower Pliocene, B2

Province:
Bukhara-SW Gissar

Type Locality and Naming

Along the village of Kofrun, Surkhandarya depression. Yu.R. Smolnikov et al., 1971.

Synonym: Kofrun Suite, Кофрунская св.

Lithology and Thickness

Interbedded gray, brown, and reddish-brown sandstones, siltstone (aleurolites), and clays. In the southwestern end of the Babatag ridge, interlayers of gravelites and conglomerates. Thickness 100-688m.

Lithology Pattern:

Fine-grained sandstone

Relationships and Distribution

Lower contact

Conformably overlies the Baysun-Neog Fm

Upper contact

It is overlain with erosion by the Yamchin Fm

Regional extent

Baysun and Surkhandarya depressions. B.I. Pinhasov correlates it with the Bahmaltepin Fm of Fergana.

GeoJSON

null

Fossils

Contains ostracods Limnocythere batashica Gr., in litt., Cyprideis littoralis Brady., C. sp., Eucypris similis Schn., E. grandis Bod., Cyclocypris sp., Cypris mandelstami Lüb., Cyprinotus arasensis Bod., C. novellus Bod.

Age

Age, according to A.A., late Miocene-middle Pliocene, Along G.Yu. Alferov et al. (61), conditionally late Miocene. B.I. Pinhasov refers the suite to the lower Pliocene

Age Span:

Beginning stage:

Zanclean

Fraction up in beginning stage:

0.0

Beginning date (Ma):

5.34

Ending stage:

Zanclean

Fraction up in the ending stage:

1.0

Ending date (Ma):

3.60

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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