Khanabad Formation

Khanabad Fm

Period:

Paleogene

Age Interval:

Priabonian, F2

Province:
Fergana

Type Locality and Naming

Named after the village of Khanabad, Fergana. Stratotype in the area of Mount Isfara, Fergana. The name of the suite was previously used for the territory of the Tajik Depression (155), subsequently, G.Kh.Salibaev and others identified the Kusan mountain for the territory of the Tajik Depression, uniting several suites (Tairsuy, Gulob, etc.) by age (186).

Synonym: Khanabadskaya Suite, Ханабадская св.

Lithology and Thickness

Green, greenish-gray, weakly carbonate clays with layers of sandstones and concretions of marls and limestones. Thickness: up to 65 m.

Lithology Pattern:

Shallow-marine marl

Relationships and Distribution

Lower contact

Conformably overlies the Isfara Fm

Upper contact

Overlain by the Sumsar-Paleog Fm with slight erosion.

Regional extent

In the Prishashkent region, it corresponds to the middle and upper parts of the Apata Fm. Correlated together with the Isfara Fm with the Chegan Fm of the S. Pre-Aral. (160; 398; 444).

GeoJSON

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Fossils

Contains marine bivalve mollusks - Nucula aralensis Luk., Pecten karadarjensis Korob., Astarte chanabadica Makar., Ostrea tianschanensis Rom., Cyprina alexeiwi Ovetsch., Cardita lukovichi Ruch., Aralocardia eichwaldiana Mica Ovetsch., Cultellus grignonensis Desh.; gastropods Turritella subangulata Brocc.; foraminifers - Bolivina antegressa Subb., Haplophragmoides pressus Min., Gaudryina manca Min., Eponides jacksonensis Curchm., Anomalina munda wachschica Davidz., Caucasina eocaenica Chal.; ostracods - Cytherella oraria Mand., Cythereidea khanabadensis Mand., Clytrocytheridea innae Mand. P.K.Makarov identifies layers: 1) with Cultellus grignonensis; 2) with Pecten karadarjensis-Ostrea tianschanensis; 3) with Astarte chanabadica and small turritellas.

Age

Belongs to the Upper Eocene, forms the upper part of the Kusan horizon. Upper Eocene, Priabonian

Age Span:

Beginning stage:

Priabonian

Fraction up in beginning stage:

0.5

Beginning date (Ma):

35.81

Ending stage:

Priabonian

Fraction up in the ending stage:

0.9

Ending date (Ma):

34.29

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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