Tuzkabak Fm
Period:
Paleogene
Age Interval:
early Oligocene
Province:
Zaisan (Zaysan) Basin - Central
Type Locality and Naming
Synonym: Tuzkabakskaya, E3tk
Lithology and Thickness
Ca. 130 m of Green-gray and dark-green clay and aleurite (silty) clay with brown and fallow spots. In the middle of the section are rare sand interbeds. At the bottom are gypsum inclusions.
Lithology Pattern:
Claystone
Relationships and Distribution
Lower contact
Overlies the Turangin Fm
Upper contact
Underlies the Ashutas Fm
Regional extent
GeoJSON
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Fossils
Age
Early and middle Oligocene (shown as lower 2/3rds of Oligocene)
Age Span:
Beginning stage:
Rupelian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
33.90
Ending stage:
Chattian
Fraction up in the ending stage:
0.25
Ending date (Ma):
26.22
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Information provided by Nariman Jamikeshev from Kazakh-language sources and from other publications.