Aksakatay Formation

Aksakatay Fm

Period:

Neogene

Age Interval:

upper Pliocene, CK11

Province:
Chatkal-Kuramin Region

Type Locality and Naming

Along the Aksakata River, left tributary of the Chirchik River, Prishashkent region. N.N. Kostenko in 1964 as the Aksakatinian suite (244, pp.164-184). Renamed by F.P. Korsakov in 1965 as the Aksakatayan suite (240, p.88). Upper formation in Murzrabad Gr

Synonym: Aksakatayan Suite, Аксакатайская св.

Lithology and Thickness

In the stratotype opposite the village of Karamazar, at the confluence of the Belderesay into the Aksakata River, it is composed of gray, coarse-gravel, boulder conglomerates. Thickness is approximately 60m.

Lithology Pattern:

Aus Conglomerate

Relationships and Distribution

Lower contact

Along the gradual transition, it lies on the Beldersay Fm of F.P. Korsakov (166) or the Gidzhal Fm of L.D. Anpleeva (Koloyarov et al., 1977).

Upper contact

It is overlain by a layer (7m) of dirty-white, coarse-bedded, debris-rich marls and carbonate clays, which V.V. Shcheglova (511)

Regional extent

Pritashkent District. According to B.I. Pinhasov, the suite is capped by the brown-colored molasse formation of the Upper Tian Shan series (Upper TianShan Gr) (late Pliocene-Early Pleistocene); it corresponds to the Early Pleistocene.

It is correlated with the Kandyr Fm and Kepeli Fm.

GeoJSON

null

Fossils

V.V. Shcheglova indicated presence of rhinoceros remains and indeterminate bones of small animals (upper layer of the Belderesay locality).

Age

V.V. Shcheglova (511) conditionally attributed to the ancient Quaternary based on the presence of rhinoceros remains and indeterminate bones of small animals (upper layer of the Belderesay locality). According to B.I. Pinhasov, the suite is capped by the brown-colored molasse formation of the Upper Tian Shan series (Upper TienShan Gr) (late Pliocene-Early Pleistocene); It is an error to note the presence of Stenon's horse remains in this locality, as indicated by F.P. Korsakov (166) and repeated by E.L. Dmitrieva, S.A. Nesmeianov (193), based on which the suite was dated by F.P. Korsakov to the middle-late Pliocene. Neither V.V. Shcheglova (511), nor R.K. Kambaryddinov (217), nor R.K. Kambaryddinov, T.K. Kambaryddinova (218), who studied the bone remains, mention the discovery of Eguus stenonis Cocchi (136) here. M.P. Safarov et al. (1999) propose to distinguish this layer of marls as a separate suite. In the Strat. Sl. (444), it is attributed to the Pliocene. Hence, for schematic stratigraphic representation, it is considered upper Pliocene.

Age Span:

Beginning stage:

Piacenzian

Fraction up in beginning stage:

0.5

Beginning date (Ma):

3.09

Ending stage:

Piacenzian

Fraction up in the ending stage:

1.0

Ending date (Ma):

2.58

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)”