Akmechet Fm
Period:
Cretaceous
Age Interval:
Middle Cenomanian, B1a
Province:
Bukhara-SW Gissar
Type Locality and Naming
After the village of Akmechet, Southwest Tajikistan. M.R. Jalilov, 1968 (190, p. 43). Stratotype at Chorokh Pass, Babatag Ridge, 3 km northwest of Akmechet village. Included in the Tagarin Horizon (56; 362; 383; 452).
Synonym: Akmechet Suite, Акмечетская св.
Lithology and Thickness
Greenish-gray sandstones, siltstone (aleurolites), gray limestones with layers of white gypsum and raspberry clays in the middle part. Thickness 46m.
Lithology Pattern:
Sandy limestone
Relationships and Distribution
Lower contact
Conformably overlies the Chorrokh Suite
Upper contact
It is conformably overlain by the Gazdagan Fm
Regional extent
Babatag Ridge.
GeoJSON
null
Fossils
Contains gastropods - Oligoptyxis bobkovae Dzhal.; foraminifers - Gaudryinopsis asiaticus (N.Byk.), Bykoviella chinaria Kortch.
Age
Belongs to the middle Cenomanian, in Strat. Sl. (446) - to the upper and lower Senonian (Cenomanian).
Age Span:
Beginning stage:
Cenomanian
Fraction up in beginning stage:
0.4
Beginning date (Ma):
97.86
Ending stage:
Cenomanian
Fraction up in the ending stage:
0.75
Ending date (Ma):
95.55
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)”