Qizinafu Gr
Type Locality and Naming
Western Tarim Basin. The Qizinafu Group was derived from the Qizinafu series by De Terra in 1928, who gave the name for a series of purple-red sandstone, conglomerate and volcanic rocks developed in the area south of Yecheng, Xinjiang, but no type section was given.
Lithology and Thickness
Sandstones. In the Yecheng area, the Qizinafu Group is 2000 m thick, and is composed of conglomerate, feldspar sandstone, calcareous sandstone, siltstone and shale.
In the south slope of Kelitag Hill near Mingfeng County, the Group is 729 m thick, and contains Leptophloeum rhombicum within the fifth bed of carbonaceous sandstone.
The Group distributed in the middle reaches of Liangliumu River has brown thick-bedded conglomerate in the Lower part, 200-300 m in thickness, and grayish-green fine-grained sandstone and siltstone in the Upper part, 1500 m in thickness.
In the upper reaches of Yayike River, south of Mingfeng, the Qizinafu Group is dominated by purplish-red, purple and grayish-green sandstone, feldspar sandstone and calcareous siltstone, 1600-2400 m thick.
Relationships and Distribution
Lower contact
It rests unconformably on the formations of various ages. Column 15 shows A'ertaxi Gr (Aertaxi Gr) below (with no gap indicated).
Upper contact
It is conformably overlain by the Lower Carboniferous with corals.
Regional extent
Yecheng area, Mingfeng County.
GeoJSON
Fossils
In the south slope of Kelitag Hill near Mingfeng County, the Group contains Leptophloeum rhombicum.
Age
Depositional setting
Additional Information