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

Nilyu Formation

Nilyu Fm

Period:

Cretaceous

Age Interval:

Late Turonian-Coniacian, B2

Province:
Bukhara-SW Gissar

Type Locality and Naming

Along the village of Nilyu, Gissar ridge. M.R. Jalilov, 1968 (190, p. 43). Stratotype in the area of the village of Nilyu, on the left bank of the Sangardak River.

Synonym: Nilyuskaya Suite, Нилюская св.

Lithology and Thickness

Alternation of gray, dark-green clays, glauconitic green sandstones, organogenic gray limestones. Thickness 105-167 m.

Lithology Pattern:

Shallow-marine marl

Relationships and Distribution

Lower contact

Conformably overlies the Sangard Fm

Upper contact

Conformably overlain by the Kuruk Fm.

Regional extent

South, Northwest Gissar.

GeoJSON

null

Fossils

Contains ammonites Placenticeras akrabatense Vinok., Proplacenticeras proplanum Gein.; marine bivalve mollusks - Lima marrobiata Orb., Liostrea rouvillei Coq., Gyrostrea akrabatensis Mirk.; sea urchins - Hemiaster fournelli Desh.; foraminifers Gaudryinella pseudoasiatica N. Byk.

Age

Belongs to the upper Turonian - Coniacian; Along A., - to the Coniacian (56, 189; 452).

Age Span:

Beginning stage:

Turonian

Fraction up in beginning stage:

0.7

Beginning date (Ma):

90.74

Ending stage:

Coniacian

Fraction up in the ending stage:

1.0

Ending date (Ma):

85.70

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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