Beldersay Formation

Beldersay Fm

Period:

Neogene

Age Interval:

upper Pliocene, CK11

Province:
Chatkal-Kuramin Region

Type Locality and Naming

Along Beldersai, right tributary of the Aksakata River, Prishashkent region. F.P. Korsakov, 1965 (240, p.88). The stratigraphic name is used limitedly. Lower formation in Murzrabad Gr

Synonym: Beldersaiskaya Suite, Belderesay suite, Бельдерсайская св.

Lithology and Thickness

Reddish and light brown siltstone (aleurolites), sandstones, conglomerates. Thickness up to 600 m.

Lithology Pattern:

Siltstone

Relationships and Distribution

Lower contact

Conformably overlies or overlies with erosion on the Bogustan Fm

Upper contact

Conformably overlain by the Aksakata Fm.

Regional extent

Prishashkent region. Forms the lower part of the Murzabat Fm (166). According to B.I. Pinhasov, enters the composition of the upper Pliocene - Eopleistocene brown-colored molasse formation of the Upper TienShan Gr. Corresponds to the upper part of the section of the upper Pliocene Gidzhal Fm and the Toytyubin Fm.

GeoJSON

null

Fossils

Mammals are associated with the suite - Hipparion sp., Chilothirium cf. schlosseri (Weber) ?, Paleotradus sp. (193).

Age

According to A., conditionally upper Pliocene.

Age Span:

Beginning stage:

Piacenzian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

3.60

Ending stage:

Piacenzian

Fraction up in the ending stage:

0.5

Ending date (Ma):

3.09

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)”