Khan-Yuly Fm
Period:
Jurassic
Age Interval:
Upper Callovian - Lower Oxfordian (J3), Sar2
Province:
East Tajik (easternmost Pamir)
Type Locality and Naming
Includes in Sarykoln district (Istyk type section (Kokchagin area)
Synonym: Khan-Yuly Suite, Ханюлыйская свита
Reference section:
Lithology and Thickness
It is represented by gray and light-colored variable-bedded limestones, interbedded with claystones and marls. (80 m).
Lithology Pattern:
Limestone
Relationships and Distribution
Lower contact
Schematic stratigraphic column indicates the lower contact as Kichikhan-Yuly Fm
Upper contact
Schematic stratigraphic column indicates the upper contact as Jerkapchal Fm
Regional extent
In the Kokchaginsky area, in the basin of the rivers Zhilgakochusu (Kokchagi), Khan-Yuly.
GeoJSON
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Fossils
It contains numerous remains of fauna, including the following pteriomorphs: Aequipecten subinaequicostatus Kas., A. fibrosus Sow., Exogyra ex gr. virgula Buv., Ceratomya calloviensis Kas.
Age
Based on the remains of the fauna and its position in the section, the suite is considered Upper Callovian and partly, possibly, Lower Oxfordian.
Age Span:
Beginning stage:
Callovian
Fraction up in beginning stage:
0.7
Beginning date (Ma):
162.66
Ending stage:
Oxfordian
Fraction up in the ending stage:
0.2
Ending date (Ma):
160.18
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Extracted from Baratov, R. B. (1976). Subdivisions of stratified and intrusive rocks of Tajikistan. Donish, Dushanbe, 276.