Tuleykan Formation

Tuleykan Fm

Period:

Permian

Age Interval:

Upper Permian, F9

Province:
Fergana

Type Locality and Naming

Along the village of Tuleykan, South Fergana. A.S. Adelung in 1939 (294, p. 23). V.V. Mikhailov

Synonym: Tuleykan Suite, Тулейканская св.

Lithology and Thickness

In the lower part - polymictic conglomerates with layers of gravelites, sandstones, less frequently siltstone (aleurolites), the upper part is a variegated layer of sandstones, siltstone (aleurolites), claystones, and clays with layers of conglomerates, gravelites, marls, limestones; at the base of the body are rhyolites and dacites. Thickness 1500-1800m.

Lithology Pattern:

Sandy_claystone

Relationships and Distribution

Lower contact

Lies with angular unconformity on Middle and Upper Carboniferous

Upper contact

overlying deposits are unknown

Regional extent

South Fergana, Karachatyr Mountains. Completes the Paleozoic section in South Fergana.

GeoJSON

null

Fossils

In the pebbles of limestones - remains of Lower Permian foraminifers, in the sandy layers of the lower part of the suite - plants Phyllotheca sp., Callipteris ex gr. martinsi (Kurtze), Madygenopteris aravanensis Sixt. and others; at the base of the upper part - Sphenobaiera aravanica Sixt., Cordaites tuleikanensis Sixt., Samaropsis tuleikanensis Sixt. and others, dating the Late Permian age of the enclosing rocks.

Age

Age accepted as Late Permian. In (166), Strat. sl. (439) and on the State Geol. Map-500 of Uzbekistan (460) it is conditionally attributed to the Upper Permian, G.L. Belgovsky et al. (170) - to the lower part of the Upper Permian; A.S. Masumov et al. (291) consider it Early Permian; in the monograph (165) it is attributed to the Upper Permian.

Age Span:

Beginning stage:

Wuchiapingian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

259.55

Ending stage:

Changhsingian

Fraction up in the ending stage:

1.0

Ending date (Ma):

251.90

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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