Sheikh-Dzheylin Formation

Sheikh-Dzheylin Fm

Period:

Devonian

Age Interval:

upper Emsian-lower part of the Eifelian, U5

Province:
Ustyurt-Sultanuzdag

Type Locality and Naming

By the Sheikhjeili, Sultanuizdag mountains G.Yu. Alferov et al., 1965 (457, pp.106-115).

Synonym: Sheikhjeyilin Suite, Шейхджейлинская св.

Lithology and Thickness

Upper - rhyolites, dacites, plagioporhyrites, interlayers of andesites. Thickness up to 1500 m.

Middle - andesites, their tuffs, tuff-sandstones, interlayers of plagioporhyrites, interlayers and horizons of marbled limestones. Lower part of the suite - basalts, dolerites, andesite-basalts, their tuffs. Thickness up to 1500 m.

Lithology Pattern:

Lava

Relationships and Distribution

Lower contact

Lower contact unknown

Upper contact

Overlain by the Kuyanchik Fm

Regional extent

Western part of the Sultanuizdag mountains, Sheikhjeili, Karatau, Jimurtau, Zangebobo, Kuyanchik elevations.

GeoJSON

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Fossils

Contains rugose corals Grypophyllum gracile Wdkd., Spongophyllidae, Acanthophyllum sp. ind Pseudoamplexus sp. ind., Embolophyllum sp. ind., Tryplasma devoniana (Soshk.), tabulates - Favosites cf. gregalis Porf., Alveolites aff. cavernosus Lec., Scoliopora sp., Chaetetes">Chaetetes sp., Heliolites cf. vulgaris Tchern., H. ex gr. porosus (Goldf.); stromatoporoids - Simplexodictyon cf. primordium grandis Yavor.; brachiopods Zdimir pseudobaschkiricus Tschern.; gastropods - Murchisonia cf. taltiensis? Tschern., Bellerophon cf. uralicus Vern., Platiceras sp., Raphisoma cf. bronni Goldf.; pelecypods - Allorisma cf. uralica Tschern. and others

Age

Fossil data in the volume of the upper Emsian-lower part of the Eifelian.

Age Span:

Beginning stage:

Emsian

Fraction up in beginning stage:

0.5

Beginning date (Ma):

402.41

Ending stage:

Eifelian

Fraction up in the ending stage:

0.5

Ending date (Ma):

389.80

Depositional setting

Depositional pattern:

Additional Information

Compiler:

K. A. Keshishyan, A. I.Kim – In: GeoGPT translation of: “Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)”