Vtoroshin Fm
Period:
Neogene, Quaternary
Age Interval:
late Pliocene-early Pleistocene?
Province:
Zaisan (Zaysan) Basin - Central
Type Locality and Naming
Synonym: Vtoroshinskaya,
Lithology and Thickness
Ca. 100 m of Polymictic inequigranular sand, cemented by calcareous aleurite (silty) clay. Gall and selvage of fallow and grey-fallow calcareous and aleurolite clays
Lithology Pattern:
Clayey sandstone
Relationships and Distribution
Lower contact
Unconformable onto the Pavlodar Fm.
Upper contact
Underlies the Gobi Fm
Regional extent
GeoJSON
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Fossils
Age
late Pliocene-early Pleistocene? (late Piacenzian-Gelasian?)
Age Span:
Beginning stage:
Piacenzian
Fraction up in beginning stage:
0.75
Beginning date (Ma):
2.84
Ending stage:
Gelasian
Fraction up in the ending stage:
1.0
Ending date (Ma):
1.80
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Information provided by Nariman Jamikeshev from Kazakh-language sources and from other publications.