Khyrsbulak Fm
Period:
Cretaceous
Age Interval:
Turonian, U6
Province:
Ustyurt-Sultanuzdag
Type Locality and Naming
Along the spring of Khysrbulak on the shore of Lake Sultan-Sandjar. A.I. Smolko, 1934 (422, p.48). Stratotype not specified.
Synonym: Khysrbulak Suite, Хырсбулакская св.
Lithology and Thickness
Coastal marine gray formations. Clays, siltstones, sandstones with layers of limestones. Thickness 170-254m.
Lithology Pattern:
Sandy_claystone
Relationships and Distribution
Lower contact
Conformably overlies the Sultan-Sandjar Fm
Upper contact
Overlain by the Laulau Fm with signs of erosion
Regional extent
Pitnyak uplift, Northwest (southwest?) Kyzylkum.
GeoJSON
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Fossils
Contains marine bivalve mollusks Inoceramus labiatus Schloth., Liostrea ljangarensis Vinok., L. jaxartensis Vinok. Foraminifera - Gaudryiinopsis akrabatensis (Zhuk.), Ammomarginulina amudariensis Zhuk., Vialovia serabulakensis Suleim., Paragaudryina babaevi Suleim.
Age
Age n. - sr Turonian. According to A., - Turonian (422),
Age Span:
Beginning stage:
Turonian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
93.90
Ending stage:
Turonian
Fraction up in the ending stage:
0.7
Ending date (Ma):
90.74
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)”