Kezirtag Fm
Type Locality and Naming
North Tarim Basin. The type section is located at Tongguzibulong nearby Kalpin County, the Xinjiang Uygur Autonomous Region. It was named by No 13 Xinjiang Geological Team in 1957, and was published by Xinjiang Compiling Group for Regional Stratigraphical Scale in 1980.
Lithology and Thickness
Sandstone. It is dominated by brick-red and purplish-red thick-bedded sandstone, thin-bedded fine-grained sandstone and siltstone, with interbeds of dark-red siltstone and red sandstone at the base. It is 1170 m in thickness.
Relationships and Distribution
Lower contact
It conformably contacts onto the underlying Yimugantawu Fm.
Upper contact
It has a disconformable contact to the overlying Kangkelin Fm of Upper Carboniferous.
Regional extent
At southern Tage in Kalpin County, the upper part of the formation is intercalated with red thin-bedded micritic dolomite; there are also salt beds of 1-2 cm in thickness in eastern Yimugantawu. In Akqi County, north of Kalpin there is red greywacke, usually intercalated with pebble beds, suggesting piedmont (?) river facies deposits. The thickness of the formation decreases to about 100 m, or even thins out, in the area east of Kalpin to Yinganshan Mt.
GeoJSON
Fossils
No fossils have been recorded in this formation.
Age
Depositional setting
Additional Information