Shodimir Formation

Shodimir Fm

Period:

Carboniferous

Age Interval:

Lower-Middle Carboniferous (Visean-Moscovian), F11

Province:
Fergana

Type Locality and Naming

Along the village of Shodymir, Turkestan ridge. A.K. Bukharin et al. in 1986 (1990). Stratotype in the village of Shodymir.

Synonym: Shodymir Topitsa, Шодимирская т., Shodimir Thickness

Lithology and Thickness

Bouldery conglomerates, carbonaceous-argillaceous slates, siltstone (aleurolites), sandstones, limestones with chaotically located boulders of terrigenous, volcanogenic, siliceous, and carbonate rocks and large (more than 1 km in extent) olistoliths mainly from carbonate rocks. Thickness up to 500 m.

Lithology Pattern:

Aus Conglomerate

Relationships and Distribution

Lower contact

Often tectonically overlies various Paleozoic

Upper contact

It is overlain with erosion by the volcanites of the Dargun Fm

Regional extent

Southern Fergana, northern slope of the Turkestan ridge, on the western side between Zaaminsay and Turkmen say.

GeoJSON

null

Fossils

In boulders, olistoliths of limestones, numerous organic remains of the Silurian, Devonian, and Lower Carboniferous have been found, which allows us to consider the age of the lower boundary of the suite not lower than the Lower Carboniferous.

Age

Comparison of these deposits with similar olistostromal t. of S. Tamdytau, S. Nuratau allows us to refine the age of the t. as early Middle Carboniferous with unclear relationships

Age Span:

Beginning stage:

Visean

Fraction up in beginning stage:

0.0

Beginning date (Ma):

346.73

Ending stage:

Moscovian

Fraction up in the ending stage:

0.3

Ending date (Ma):

312.71

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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