Karatau Limestone Fm
Type Locality and Naming
Synonym: Viséan—Namurian Formations, Unknown Fm (in the original literature it is named as unknown, hence for the Lexicon we named it as Mountain range followed by the lithology, synchronizing with Karatau other deposits)
Reference section:
Lithology and Thickness
Limestones. In the mountains of Karatau, massive limestones with an incomplete thickness of 250 m are exposed. These are light gray, coarse-bedded and massive limestones with an incomplete thickness of about 180 m in the central part.
Relationships and Distribution
Lower contact
Their base is everywhere cut by faults. They are covered conformably by Carboniferous limestones of the Lower-Middle or transgressively by the Kurpin Fm (урпинской Свитой)
Upper contact
the Upper Carboniferous and Lower Permian Kumbel Fm (кумбельской свитой).
Regional extent
They are distinguished in the Turkestan region in the western, eastern, and central parts. In the eastern part of the Turkestan region, Visean-Namurian (намюрские) formations are known in the mountains of Karatau. In the central part of the Turkestan region, the considered formations are exposed in the mountains of Kurganak.
GeoJSON
Fossils
In the limestones, shells of Marginifera glabra Mart., Chonetes comoides Sow., Schellwienella crenistria Phill., and others were found in the eastern part. In the described limestones, there are remains of Visean algae and foraminifera Koninckopora inflata (Kon.), Globoendothyra globulus (Eichw.), Eostaffella ikensis Viss., in the central part.
Age
Depositional setting
Additional Information