Kaindi Formation

Kaindi Fm

Period:

Silurian, Devonian

Age Interval:

Silurian-Middle Devonian, F9c

Province:
Fergana

Type Locality and Naming

Along the Kaindy River, a right tributary of the Akbura River, Alay Range. V.I. Kotel'nikov, G.S. Porshnyakov, A.V. Yagovkin in 1959 (176, p.14). Stratotype - right bank of the Kaindy River, about 8 km upstream from the mouth.

Synonym: Kaindinian suite, Kaindinskaya Suite, Каиндинская св.

Lithology and Thickness

Lower part - clayey slates, siltstone (aleurolites), and sandstones with interlayers of limestones, often clastic, less frequently gravelites and conglomerates. Upper part - polymictic sandstones with interlayers and packages of clayey-silty slates, gravelites, small-pebble conglomerates, limestones, cherts, and tuffs of basic composition. Thickness from 100-300 to 600 m

Lithology Pattern:

Siltstone

Relationships and Distribution

Lower contact

Lies transgressively on the Kan Fm

Upper contact

It is unconformably overlain by Lower Carboniferous limestones or terrigenous deposits of the Upper Paleozoic.

Regional extent

Karachatyr Mountains. Along V.V. Mikhailov's data (460), the stratigraphic volume of the suite varies in different regions.

GeoJSON

null

Fossils

In the Karachatyr Mountains, the lower part of the suite contains Upper Silurian corals - Spongophylloides aff. pertecta Dub., Dividyctyon aff. uniformis Soc., and above - Lower Devonian - Plasmophyllum ex gr. salairica Peetz., Microplasma ex gr. impunctum (Lonsd.), Microphyllum aff. ligeriensis (Bevirois).

Age

Belongs to the Silurian-Middle Devonian. Beyond Uzbekistan, its lower part is characterized by organic remains of Lower and Upper Silurian, Lower and Middle Devonian (459). In the Stratigraphic Lexicon (441), it is assigned to the Upper Silurian (?) - Middle Devonian; on the State Geological Map-500 of Uzbekistan (460) - to the Silurian-Middle Devonian.

Age Span:

Beginning stage:

Pridoli

Fraction up in beginning stage:

0.0

Beginning date (Ma):

422.73

Ending stage:

Givetian

Fraction up in the ending stage:

1.0

Ending date (Ma):

378.90

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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