Iskinaukat-Mioc Formation

Iskinaukat-Mioc Fm

Period:

Miocene

Age Interval:

Lower–Middle Miocene, F1

Province:
Fergana

Type Locality and Naming

Along the village of Iski-Naukat, Fergana, Kyrgyzstan. A.S. Telenkov, 1964 (468, p.82). The term is used restrictively. B.I. Pinhasov

Synonym: Iskinaukat Suite, Искинаукатская св.

Lithology and Thickness

Red-colored siltstone (aleurolites), sandstones, in the eastern part - sandstones with lenticular interlayers of gravelites. Thickness up to 330 m.

Lithology Pattern:

Siltstone

Relationships and Distribution

Lower contact

Often lies unconformably on the Karasugat Fm

Upper contact

It is unconformably overlain by the Aldyr Fm or Akburin Fm

Regional extent

Fergana. Along A., it is correlated with the Iskinaukat-Mioc Fmwith the Chil'darin Fm of Darvaz (Tajikistan), others - with the subsalt and salt-bearing suites of the scheme of N.P. Vasilkovsky (126; 166). A.S. Telenkov, P.K. Chikhachev. P, age of the stratigraphic legend (444). Along B.I. Pinhasov, it is a constituent part of the Mailisay suite (Lower-Middle Miocene).

GeoJSON

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Fossils

Contains freshwater ostracods.

Age

Along A., the age is Lower Miocene (?). For schematic stratigraphic column representation, it is considered Aquitanian

Age Span:

Beginning stage:

Aquitanian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

23.04

Ending stage:

Serravallian

Fraction up in the ending stage:

1.0

Ending date (Ma):

11.63

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)”