Cenozoic

Cretaceous

Jurassic

Triassic

Permian

Carboniferous

Devonian

Silurian

Ordovician

Cambrian

Neoproterozoic

Main source = Baratov, R.B., et al. (1976). Subdivisions of stratified and intrusive rocks of Tajikistan. Publishing House "Donish", Dushanbe, 269 pp. plus tables. Provided by Dr. Jovid Aminov, Nazarbayev University, Astana, Kazakhstan Translated to English by the GeoGPT group, Zhejiang Lab, Hangzhou, China--see About

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Kaindin Formation

Kaindin Fm

Period:

Triassic

Age Interval:

Induan – Carnian (T? kn), C3

Province:
Central Tajik

Type Locality and Naming

It was distinguished by M. I. Shabalikin under the name "violet-green" (Geol. USSR, vol. 24, 1959). The geographical name was proposed by E. F. Roman'ko and E. Z. Tairou (1962). Lakhsh (formerly Jirgatol) District — officially renamed in 2016 — is located in northeast Tajikistan, and includes the village of Mugh (formerly Muk) within its administrative jamoat Lakhshi Bolo (Wikipedia, 2025; RFE/RL via Asia-Plus, 2016; Wikipedia: Mugh; Wikipedia: Lakhshi Bolo).

Synonym: Kaindinskaya suite, Kаиндинская свита

Reference section:

Lithology and Thickness

The lower part of the Kaindin Fm is composed of green, greenish-gray, and raspberry thinly slaty and foliated slates with lenses, interlayers, and blocks of yellowish-gray marble limestone. Thickness 700 m. The upper part of this suite is formed by green and red polymictic sandstones, gravelites, and conglomerates. Its incomplete thickness is 800 m. The incomplete thickness of the entire suite is 1500 m. The fragments in the conglomerates are represented by quartz diorites, granodiorites, and altered.

Lithology Pattern:

Aus Conglomerate

Relationships and Distribution

Lower contact

The Kaindin Fm (Каиндинская свита) lies conformably on the black sandstones and shales of the Permian Psikharv Fm (пшихарвской свиты)

Upper contact

overlying strata older than Quaternary are unknown.

Regional extent

It is distributed in the southeastern part of the Muxuy, Lakhsh district.

GeoJSON

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Fossils

In the clasts, as well as in the lenses (or in the blocks?) of limestones in the suite, fusulinid remains of the upper Permian Murgab horizon, Neoschwagerina sp., Verbeekina sp., have been found.

Age

E.F. Romanenko and E.Z. Tair (1962) considered the limestones with fusulinids as lenses and therefore assigned the age of the Kaindin Fm (каиндинской свиты) as late Permian. However, these limestones are most likely re-deposited. This is indicated by the aforementioned clasts of late Permian granitoids, as well as the possible presence of upper Permian fusulinids in the underlying Psikharv Fm (пшихарвской свите) (see the description of the Psikharv Fm). Based on these considerations, the Kaindin Fm is conditionally attributed to the Triassic period.

Age Span:

Beginning stage:

Induan

Fraction up in beginning stage:

0.0

Beginning date (Ma):

251.90

Ending stage:

Carnian

Fraction up in the ending stage:

1.0

Ending date (Ma):

227.30

Depositional setting

Depositional pattern:

Additional Information

Compiler:

Extracted from Baratov, R. B. (1976). Subdivisions of stratified and intrusive rocks of Tajikistan. Donish, Lakhsh district, 276.