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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Gabirut Formation

Gabirut Fm

Period:

Cretaceous

Age Interval:

Albian, S4

Province:
North Tajik

Type Locality and Naming

Identified by T.A. Sixtel (Decisions..., 1959)

Synonym: Gabirutskaya suite, Габирутская свита

Reference section:

Lithology and Thickness

It consists of alternating light gray medium- and coarse-grained quartz sandstones and gravels with dark gray and gray siltstones, clays, and coal layers. In the lower part of the layer, coarser-grained rocks with clear large-scale uni- and bidirectional cross-bedding are noted. The thickness of the suite is 180-290 m.

Lithology Pattern:

Coarse-grained sandstone

Relationships and Distribution

Lower contact

The considered deposits lie either sharply unconformably on the rocks of the Paleozoic, or with a slight erosion on the formations of the Ravat Fm, previously attributed to the Upper Triassic deposits, and according to our and R.Z. Gengkina's data, included in the Lower Triassic section.

Upper contact

The Jurassic stratum is overlain by Cretaceous red beds with an unclear contact.

Regional extent

In the valleys of the rivers Fandarya, Pasrud, Yagnob, the section of the coal-bearing Lower-Middle Jurassic deposits - J₁₊₂is subdivided into a number of suites identified by T.A. Sixtel (Decisions..., 1959): Fand, Kukhiraat, Gabirut, Dzhizhikrut, Kukhimalek.

GeoJSON

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Fossils

In these deposits, a large amount of plant remains has been found, among which are typically Middle Jurassic Equisetum ferganensis Sew., Coniopteris spectabilis Brick., C. latifolia Brick, C. pulcherrima Brick, Eboracia lobifolia (Phill.) Thom., Cladophlebis suluctensis Brick, C. nebbensis (Brongn.) Nath., C. denticulata (Brongn.) Font., Ptilophyllum cutchense Morr., Nilssonia orientalis Heer, N. acuminata (Presl) Goepp., Ginkgo sibirica Heer, Sphenobaiera spectabilis (Nath.) Florin, etc.

Age

The complex of plant remains indicates the Albian age of the Gabirut Fm, габирутской свиты.

Age Span:

Beginning stage:

Albian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

113.20

Ending stage:

Albian

Fraction up in the ending stage:

1.0

Ending date (Ma):

100.50

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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