Apshir Formation

Apshir Fm

Period:

Cretaceous

Age Interval:

Lower Cretaceous (upper Albian), F9, F9e

Province:
Fergana

Type Locality and Naming

Along the Apshir (Abshir) River, South-Eastern Fergana. S.N. Simakov, 1953 (416, p.98).

Synonym: Aishirskaya Formation, Апширская (абширская) св.

Lithology and Thickness

Red, gray, mottled gypsum-bearing clays with nodules and layers of gypsum, conglomerates, and sandstones; in the Isfayram-Sokh interfluve, gypsums predominate with layers of clays and dolomites only in the lower part. Thickness 40-90m.

Lithology Pattern:

Gypsiferous claystone

Relationships and Distribution

Lower contact

Conformably overlies the Iskinaukat-Cret Fm

Upper contact

Conformably overlain by the Tokubay Fm or Kyzylpilyal Fm

Regional extent

Naukat Basin, South-Eastern Fergana and the interfluve of the Isfayram-Sokh in Southern Fergana. Along A.V. Sochava, it is the upper sub-suite of the Lyakan Fm (166; 417; 434). N.N. Bobkova". Page following (446).

GeoJSON

null

Fossils

Contains ostracods and blue-green algae of the type Ottonosia.

Age

Belongs to the upper Albian. A. attributed it to the Senonian.

Age Span:

Beginning stage:

Albian

Fraction up in beginning stage:

0.7

Beginning date (Ma):

104.31

Ending stage:

Albian

Fraction up in the ending stage:

0.75

Ending date (Ma):

103.68

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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