Muyan Fm
Period:
Cretaceous
Age Interval:
Lower Cretaceous (Barremian- Albian), F9
Province:
Fergana
Type Locality and Naming
Along the village of Muyan, South Fergana. N.P. Vasilkovsky, 1941 (125, p. 169).
Synonym: Muyanskaya Suite, Муянская св.
Lithology and Thickness
Malinovye, gray clays, sandstones with layers of conglomerates, limestones, and dolomites, locally (Kan) layers of gypsum. Thickness up to 100m. Along A.V. Sochava (434), lower part of the Albian and subdivided into the Lower Muyan (Barremian-Aptian) and Upper Muyan (lower part of the Albian) sub-suites
Lithology Pattern:
Clayey sandstone
Relationships and Distribution
Lower contact
Overlies transgressively the Middle Jurassic
Upper contact
Conformably overlain by the Lyakan Fm
Regional extent
South and Central Fergana.
GeoJSON
null
Age
Conditionally attributed to the Upper Barremian - Middle Albian. ; Along S.N. Simakov (416), - to the Lower Cretaceous and Senonian; Along A.V. Sochava (434), - conditionally to the Barremian – Aptian. Along the Decision... 1977 (383), - to the Upper Barremian - Lower Middle Albian.
Age Span:
Beginning stage:
Barremian
Fraction up in beginning stage:
0.8
Beginning date (Ma):
122.42
Ending stage:
Albian
Fraction up in the ending stage:
0.4
Ending date (Ma):
108.12
Depositional setting
Depositional pattern:
Additional Information
Compiler:
I.M. Abdurazimova – In: GeoGPT translation of: “Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)”