Tumxuk Fm
Type Locality and Naming
The type section is at Tumxuk in Bachu County, Xinjiang. The Tumxuk Fm is derived from the Tumxuk Gr proposed by Zhao Zhixin in 1987. Zhou et al. (1990) renamed the Tumxuk Gr as the Tumxuk Fm.
Synonym: (吐木休克组）
Lithology and Thickness
The Formation is composed of gray, dark gray calcirudite and purple nodular calcarenite. In the type area, the Tumxuk Fm is 130 m thick.
Relationships and Distribution
Lower contact
It rests conformably on the white limestone of the Yijianfang Fm
Upper contact
It is overlain by the thick-bedded calcirudite and calcarenite of the Lianglitag Fm
GeoJSON
Fossils
This stratigraphic unit yields conodonts of P. serra assemblage, P. anserinus assemblage, B. variabilis assemblage, in ascending order, nautiloid of Dideroceras wahlenbergi- Trilacinoceras assemblage and additional trilobite Calymenesun.
Age
Depositional setting
Additional Information