Urumbash Fm
Period:
Cretaceous
Age Interval:
upper Cenomanian - upper Turonian, F3
Province:
Fergana
Type Locality and Naming
Along the Urumbash River, right tributary of the Kugart River, Fergana. N.N. Verzilin, 1962 (139, p.74). Stratotype in the Kugart River basin. Lower formation in the Varzyk Gr
Synonym: Urumbash Suite, Урумбашская св.
Lithology and Thickness
Red, pink conglomerates, gravelites with layers of greenish-gray clays and limestones. Thickness 5-60m.
Lithology Pattern:
Aus Conglomerate
Relationships and Distribution
Lower contact
With erosion on Karaalmin Fm
Upper contact
It is overlain conformably by Yalovach Fm
Regional extent
N.-E. and N. Fergana.
GeoJSON
null
Fossils
Contains marine bivalve mollusks - Rhynchostreon columbum (Lam.), Megatrigonia turkestanensis (Arkh.), Plicatula turkestanensis (Born.). Zaneraet with erosion on Karaalmin Fm
Age
Along the Decision ... ,1977 (383), in the Strat. sl. (446) and Along N.N. Verzilin (139), - to upper Cenomanian - upper Turonian. It is an analog of the oyster t. I.M. Abdouazimova
Age Span:
Beginning stage:
Cenomanian
Fraction up in beginning stage:
0.75
Beginning date (Ma):
95.55
Ending stage:
Turonian
Fraction up in the ending stage:
0.5
Ending date (Ma):
91.65
Depositional setting
Depositional pattern:
Additional Information
Compiler:
I.M. Abdouazimova – In: GeoGPT translation of: ”Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)"