Tologoy Fm
Period:
Triassic, Jurassic
Age Interval:
late Triassic-early Jurassic
Province:
Zaisan (Zaysan) Basin - Central
Type Locality and Naming
Synonym: Tologoyskaya, T3-J1t
Lithology and Thickness
Ca. 275 m of Coaly sandstone, aleurolite (silt) and claystone. In the upper part of the log, finely divided rocks prevail over coarser-grained ones. According to geophysical data, bes of coaly claystone and coal are available.
Lithology Pattern:
Fine-grained sandstone
Relationships and Distribution
Lower contact
Overlies the conglomerate of the Akzhai Fm
Upper contact
Unconformably overlain by the Middle Jurassic sands of the Kustin Fm
Regional extent
GeoJSON
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Fossils
Age
late Triassic (Norian?) – early Jurassic (through Toarcian?)
Age Span:
Beginning stage:
Norian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
227.30
Ending stage:
Toarcian
Fraction up in the ending stage:
1.0
Ending date (Ma):
174.70
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Information provided by Nariman Jamikeshev from Kazakh-language sources and from other publications.