Modun Fm
Period:
Cretaceous
Age Interval:
Upper Turonian (K21), K1, D1, C2, C2a, S3, S4, S5
Province:
SW Tajik, North Tajik, Central W Tajik
Type Locality and Naming
Includes in Khation Region, Sughd Region, Darvaz district, Dushanbe - west Shirkent-Luchob, Dushanbe - east Shirkent-Luchob.
Synonym: Modun horizon, Moudun horizon, Moudun Fm
Lithology and Thickness
In the Kafirnigan district, the lower Coniacian stage, Modun horizon, consists of greenish-gray clays with a thickness of 35-100 m, containing frequent interbeds of organic limestones and shell limestones with oysters.
Lithology Pattern:
Claystone
Relationships and Distribution
Lower contact
Overlies the Disgiryak Fm.
Upper contact
Underlies the Modun Fm.
Regional extent
Afghan-Tajik Basin.
GeoJSON
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Fossils
In the Kafirnigan district, the, Modun horizon contains remains of oysters Liostrea rouvillei (Coq.), Exogyra turkestanensis Born., and others
Age
Lower Coniacian
Age Span:
Beginning stage:
Coniacian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
89.39
Ending stage:
Coniacian
Fraction up in the ending stage:
0.5
Ending date (Ma):
87.55
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Extracted from Baratov, R. B. (1976). Subdivisions of stratified and intrusive rocks of Tajikistan. Donish, Dushanbe, 276.