Dzhetyimtau Fm
Period:
Cretaceous
Age Interval:
upper part of the Middle - Upper Albian., B1a
Province:
Bukhara-SW Gissar
Type Locality and Naming
Along the Jetymtau ridge, Southwest Tajikistan. Yu.N.Andreev, 1966 (366, p.38). Stratotype at the village of Dasgirak, in the central part of the Jetymtau ridge. Enters the Luchak Horizon and Akkapchigay Horizon (55; 189; 318;446; 452)
Synonym: Dzhetimtauskaya Suite, Джетыимтауская св.
Lithology and Thickness
Clays, siltstone (aleurolites) reddish-brown spotted with rare interlayers of sandstones. Thickness 30-90m.
Lithology Pattern:
Claystone
Relationships and Distribution
Lower contact
Overlies the Mingbatman Fm and Kyzylangur Fm with erosion
Upper contact
It is conformably overlain by the Shirabad Fm.
Regional extent
Central and Southwest Gissar.
GeoJSON
null
Fossils
Contains marine bivalve mollusks Exogyra plicata Lam.; ostracods - Oncocytheridea daganakiicensis Andrv., Asciocythere dorsumangulata Andrv.
Age
Conditionally assigned to the upper part of the Middle - Upper Albian
Age Span:
Beginning stage:
Albian
Fraction up in beginning stage:
0.6
Beginning date (Ma):
105.58
Ending stage:
Albian
Fraction up in the ending stage:
0.8
Ending date (Ma):
103.04
Depositional setting
Depositional pattern:
Additional Information
Compiler:
I.M.Abdazimova – In: GeoGPT translation of: “Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)”