Akburin Formation

Akburin Fm

Period:

Quaternary

Age Interval:

Eopleistocene (Gelasian), F1

Province:
Fergana

Type Locality and Naming

Along the Akbura River, South-East Fergana, Kyrgyzstan. A.S. Telenkov, 1964 (468, p.84). The term is used in a limited sense.

Synonym: Akburinskaya Suite, Акбуринская св.

Lithology and Thickness

In the foothills, conglomerates with layers of siltstone (aleurolites), sandstones, clays. In the submerged part, siltstone (aleurolites) with layers of conglomerates. Thickness 250-1250m.

Lithology Pattern:

Aus Conglomerate

Relationships and Distribution

Lower contact

It lies with erosion on the Papan Fm or Kaplankul Fm

Upper contact

Often unconformably overlain by the Taldyk Fm

Regional extent

South-East Fergana. A. correlates it with the Karakan Fm of Darvaz (444). Along V.I. Popov et al. (166), it corresponds to suite V2 and C of N.P. Vasilkovsky's scheme (128).

GeoJSON

null

Fossils

In the lower part of the suite, a tooth was found - Archidiskodon cf. meridionalis Nesti.; ostracods - Lineocypris minuta Schn., L. advena Schn., L. namanganica Schn., L. igrasovatica Gr.

Age

A. dates the suite to the late Pliocene. B.I. Pinhasov refers it to the Eopleistocene. B.I. Pinhasov. For schematic stratigraphic column representation, it is considered Gelasian.

Age Span:

Beginning stage:

Gelasian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

2.58

Ending stage:

Gelasian

Fraction up in the ending stage:

0.5

Ending date (Ma):

2.19

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)”