Kuzigongsu Fm
Type Locality and Naming
It was named by the Compiler
Jingeng Sha (coordinator) Group for the Regional Stratigraphic Chart of the Xinjiang Uygur Autonomous Region in 1981. The naming section is located at Xiaoheiziwei Village in the lower reaches of the Kuzigongsu River, Wucha County, Xinjiang.
Synonym: （库孜贡苏组）
Lithology and Thickness
Composed of thick-bedded and massive red conglomerates, intercalated with sandstone and sandy mudstone, with pebbles getting coarser in an ascending order. In many places of the Xiaoheziwei section there occur quartz-sandstone and muddy quartz-sandstone with cross-beddings.
Relationships and Distribution
Lower contact
The formation is in a conformable contact with the underlying Ta’erga Fm
Upper contact
It is in an unconformable contact with the overlying Kezilesu Gr (Sanjianfang Fm)
Regional extent
The particular formation is distributed mainly in the area of Kuzigongsu River-Xiaoheiziwei-Tuoyun northeast of Wucha County. A more Compiler
Jingeng Sha (coordinator) exposure of the particular formation is found along the Kuzigongsu River in the vicinity of Wucha County. Southerly it is found to occur in the areas of Tarmu, Shalayi, and Yigeziya to the west of Yingjisha. Besides, it is also found to occur in the area of Buya-Pixi of Hetian County, as well as in the area of Taxidaban of Arkin Mts. The thickness of the formation is changeable from place to place, being of only 160 m in Tuoyun County, while in the area of Arkin Mts its thickness is of 500-1100 m.
GeoJSON
Fossils
No fossils have been found there.
Age
Depositional setting
The formation represents fluvial facies.
Additional Information
Age:
Its geological age was determined on the basis of its stratigraphic position relative to both its overlying and underlying stratigraphic horizons. Schematic strat column suggests Bathonian-Callovian age (implying major hiatus at top).
Age span:
Beginning stage: Bathonian
Fraction up in beginning stage: 0.0
Beginning date (Ma):
Ending stage: Callovian
Fraction up in ending stage: 1.0
Ending date (Ma):
Depositional setting:
The formation represents fluvial facies.
Depositional-pattern:
Additional Information
Compiler
Jingeng Sha (coordinator)