Madyan Fm
Period:
Jurassic
Age Interval:
Bajocian (J2 bj), N-Psh1
Province:
East Tajik (East Pamir)
Type Locality and Naming
Includes in North Pshart. Distinguished in the Southeast Pamir in the Madyan type-section
Synonym: Madyanskaya Suite
Reference section:
Lithology and Thickness
It is composed at the bottom of dark-colored clay slates and siltstones with beds of sandstone and limestone.
Lithology Pattern:
Clayey sandstone
Relationships and Distribution
Lower contact
Lying conformably on Sekyebulak Fm
Upper contact
Regional extent
It is widespread in the Southeast Pamir.
GeoJSON
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Fossils
All parts of this stage are rich in organic remains. From the lower part of the stage (Jarute Fm) - Darellella recticostata Buckm., Emileia brochii Sow., Sonninia cf. multicostata Buckm
Age
Bajocian
Age Span:
Beginning stage:
Bajocian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
170.90
Ending stage:
Bajocian
Fraction up in the ending stage:
0.4
Ending date (Ma):
169.81
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Extracted from Baratov, R. B. (1976). Subdivisions of stratified and intrusive rocks of Tajikistan. Donish, Dushanbe, 276.