Surkhin Fm
Period:
Paleogene
Age Interval:
Lower Eocene (Ypresian), F3
Province:
Fergana
Type Locality and Naming
Along the Surkhi River, N. Fergana. U.M. Rasulov, G. Fathullaev, S.D. Morozov, 1991. Stratotype in the Surkhi River area at the Opichek waterfall. The term is not in use.
Synonym: Surkhinskaya Suite, Сурхинская св.
Lithology and Thickness
Gravels, sandstones, sandy clays, red-colored siltstone (aleurolites). Thickness up to 20m.
Lithology Pattern:
Clayey sandstone
Relationships and Distribution
Lower contact
Conformably overlies the Opichek Fm
Upper contact
Conformably overlain by the Alay Fm
Regional extent
Northern Fergana. Correlated with the upper part of the Kainarbulak Fm of the Prishkent region. Corresponds to the upper part of the Opichek Fm
GeoJSON
null
Fossils
At the base, it contains marine bivalve mollusks - Ostrea hamiglobosa Rom., Pycnodonta errara Vial.
Age
Belongs to the Lower Eocene (Ypresian stage).
Age Span:
Beginning stage:
Ypresian
Fraction up in beginning stage:
0.5
Beginning date (Ma):
52.04
Ending stage:
Ypresian
Fraction up in the ending stage:
1.0
Ending date (Ma):
48.07
Depositional setting
Depositional pattern:
Additional Information
Compiler:
A.A. Abdusamatov – In: GeoGPT translation of: ”Abduazimova, Z.M. (Ed.), 2001. Stratigraphic Dictionary of Uzbekistan. IMR (Institute of Mineral Resources), Tashkent, 580 pp. (In Russian)"