Mogotau Formation

Mogotau Fm

Period:

Devonian

Age Interval:

Middle Devonian (Givetian), CK9c

Province:
Chatkal-Kuramin Region

Type Locality and Naming

In the Mogoltay Mountains, Kuraminsky range. O.I. Sergun'kova in 1959 (457, pp. 85, 90).

Synonym: Mogoltauskaya Formation, Mogoltau suite, Молгатауская св.

Lithology and Thickness

Dark gray, black, thin-bedded and banded dolomites with layers of marls and limestones. Thickness from 200-240 to 600m.

Lithology Pattern:

Dolomite

Relationships and Distribution

Lower contact

It lies on the Mashrap Fm (the nature of the contact is unclear)

Upper contact

It conformably overlies the Karamazar-Dev Fm. (165,441; 460).

Regional extent

Kuraminsky range, Mogoltay Mountains, Baraktyntau.

GeoJSON

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Fossils

Stromatoporoids - Amphipora ramosa Phill., Actinostroma">Actinostroma cystosum Bog., Stromatoporella">Stromatoporella tuberosa Yavor, tabulates - Thamnopora cervicornis Blain., Alveolitella sp.; brachiopods Emanuella subumbona Hall., Stringocephalus burtini Defr. and others.

Age

Middle Devonian (Givetian) age is determined by stromatoporoids, brachiopods and others.

Age Span:

Beginning stage:

Givetian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

385.30

Ending stage:

Frasnian

Fraction up in the ending stage:

0.2

Ending date (Ma):

377.34

Depositional setting

Depositional pattern:

Additional Information

Compiler:

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