Kokchukur Fm
Period:
Jurassic
Age Interval:
middle Callovian (J3), M3a
Province:
SE Tajik (SE Pamir)
Type Locality and Naming
It is distinguished in the Southeast Pamir in the SE Murghab district Gurumdin type section of the Jurassic
Synonym: Kokchukurskaya suite
Reference section:
Lithology and Thickness
It consists of dark gray dense limestones.
Lithology Pattern:
Limestone
Relationships and Distribution
Lower contact
Schematic stratigraphic column indicates the lower contact as Uzuntau Fm
Upper contact
Schematic stratigraphic column indicates the upper contact as Duylangtash Fm
Regional extent
It is widespread in the Southeast Pamir.
GeoJSON
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Fossils
with flint nodules and remains of middle Callovian ammonites Reineckeia sp. and Hecticoceras sp.
Age
middle Callovian
Age Span:
Beginning stage:
Callovian
Fraction up in beginning stage:
0.5
Beginning date (Ma):
163.41
Ending stage:
Callovian
Fraction up in the ending stage:
0.8
Ending date (Ma):
162.28
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Extracted from Baratov, R. B. (1976). Subdivisions of stratified and intrusive rocks of Tajikistan. Donish, Dushanbe, 276.