Murghab Gr

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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Murghab Gr

Period:

Quaternary

Age Interval:

Late Quaternary (Q_II), E-Psh1-3

Province:
East Tajik (East Pamir)

Type Locality and Naming

Includes in East Pshart, East Pshart (southern slope), East Pshart (Agadjan river basin)

Synonym: Murghab complex, Мургабский комплекс

Reference section:

Lithology and Thickness

To this, moraines of the maximum ancient valley glaciation (second in the recent history of the Pamir) are referred, as well as synchronous alluvial, lacustrine, and lacustrine-alluvial sediments, up to 20-200 m thick. In the present river valleys, the Murghab Gr is represented by thick layers of alluvial gravels, in the depressions (Alichur, Karakul, Salangur, etc.) - by clayey lacustrine deposits, overlain by moraines of the last glaciation. Terraces have heights above the valley bottoms from 4-6 to 60 m. In many valleys, the alluvium transitions into moraines that fill the valley bottoms. From the point of view of correlating Quaternary deposits of the Pamir, the lacustrine interglacial clays are most interesting.

Lithology Pattern:

Glacial till

Relationships and Distribution

Lower contact

Overlie moraines of the lower Quaternary East Pamir Gr.

Upper contact

They themselves are overlain by moraines of the considered Murghab Gr.

Regional extent

It is distributed in the Pamir. They are established at many points (Lake Karakul, Lake Salangur, rivers Kyzyldzhyik, Ak-Dzhilga, in the lower reaches of the Alichur River, etc.)

GeoJSON

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Fossils

In the clays, I.P. Yushchin and I.V. Teplouhov found in 1962 plant prints of Monocotyledoneae sp., Potamogeton sp., Butomus cf. junceus Turcz., Myriophyllum boamicum Korn.

Age

The fossil data, which according to V.S. Kornilova's conclusion allow to date the enclosing rocks to the middle Quaternary.

Age Span:

Beginning stage:

Calabrian

Fraction up in beginning stage:

0.5

Beginning date (Ma):

1.29

Ending stage:

Calabrian

Fraction up in the ending stage:

1.0

Ending date (Ma):

0.77

Depositional setting

alluvial, lacustrine, and lacustrine-alluvial sediments

Depositional pattern:

Additional Information

Compiler:

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