Renzhit Formation

Renzhit Fm

Period:

Carboniferous

Age Interval:

Moscovian, F3a

Province:
Fergana

Type Locality and Naming

Along the R. Renzhit, southern slope of the Bosbutau Mountains, N. Fergana.

F.R. Bensh, 1977 (439, p. 317).

Synonym: Renzhitskaya Suite, Ренжитская св.

Lithology and Thickness

In the lower part, limestone conglomerates and limestones. In the upper part - sandstones, siltstones, argillites, layers of conglomerates and limestones. Thickness 500-600m

Lithology Pattern:

Sandy_claystone

Relationships and Distribution

Lower contact

It lies unconformably on the limestones of the lower Carboniferous

Upper contact

It is overlain with erosion by the Mamay Fm

Regional extent

Northern Fergana, locally on the southern slope of the Bosbutau Mountains

GeoJSON

null

Fossils

In the lower part, limestones with foraminifera - Fusulinella schwagerinoides Deprat, F. ex gr. bocki Moel., Hemifusulina bocki Moel., H. aff. graciosa Lee, Kamaina aspera (Chern.), Fusulina cylindrica Fisch., Beedeina elegans (Raus. et Belja.). In the upper part - limestones with foraminifera - Fusulinella schwagerinoides Deprat, F. aff. kumpani Putrja., Fusulina cf. mjackovensis Raus., F. ex gr. Quasifusulinoides Raus. The complex of foraminifera dates the late Moscovian age - the zone of Fusulinella schwagerinoides.

Age

It belongs to the Shunkmazar horizon of the upper Moscovian substage. In 1965 (457), F.R. Bensh considered the deposits as a conglomerate-sandstone suite of the late Moscovian age.

Age Span:

Beginning stage:

Moscovian

Fraction up in beginning stage:

0.7

Beginning date (Ma):

309.46

Ending stage:

Moscovian

Fraction up in the ending stage:

0.9

Ending date (Ma):

307.83

Depositional setting

Depositional pattern:

Additional Information

Compiler:

F.R. Beni – In: GeoGPT translation of: ”Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)"