Neogene

Paleogene

Cretaceous

Jurassic

Triassic

Permian

Carboniferous

Devonian

Silurian

Ordovician

Cambrian

Neoproterozoic

Mesoproterozoic

Paleoproterozoic

Main source = Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian) Translated to English by the GeoGPT group, Zhejiang Lab, Hangzhou, China--see About

Shatut Formation

Shatut Fm

Period:

Proterozoic

Age Interval:

, B1a

Province:
Bukhara-SW Gissar

Type Locality and Naming

By the Shatut stream, Southwest Gissar. V.A. Khokhlov, V.E. Golovin, et al. in 1972, as part of the Baysun crystalline rock series (307, p.68). Stratotype in the Baysuntau mountains, basin of the Shatut river. Uppermost formation in Baysuntau Gr.

Synonym: Shatut Suite, Шатутская св.

Lithology and Thickness

Uniform layer of biotite plagiogneisses, muscovitized with numerous low-power bodies of quartzites; in the lower part (thickness 400m) - single bodies of sillimanite-biotite, biotite-amphibole, garnet-biotite-amphibole gneisses; in the upper (thickness 410m) - bodies of quartzitic slates and micaceous quartzites. In the upper parts of the suite, near the Gumatak intrusive, numerous low-power (3m) bodies of granitogneisses are developed. Thickness 810m.

Lithology Pattern:

Gneiss

Relationships and Distribution

Lower contact

It is connected by gradual transitions with the underlying Aylangar Fm

Upper contact

It is overlain by the Vakhshvar Fm with a sharp unconformity.

Regional extent

Southwest Gissar, Baysuntau and Susyztau mountains.

GeoJSON

null

Fossils

Age

Potassium-argon dating of amphiboles from amphibolites gave figures: 702 +/- 10; 743 +/- 10; 946 million years; biotites from biotite-muscovite gneiss - 1239 million years (307). I.M. Mirkhodzhaev, V.A. Khokhlov, et al. (307) attributed the suite to the lower-middle Proterozoic; in the Strat. sl. (442) - conditionally to the Archean.

Age Span:

Beginning stage:

Tonian

Fraction up in beginning stage:

0.6

Beginning date (Ma):

832.00

Ending stage:

Tonian

Fraction up in the ending stage:

0.8

Ending date (Ma):

776.00

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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