Zhuji Fm
Type Locality and Naming
It was named by the Geological College of Beijing in 1959-1961. The naming section is located in the Zhuji area of Shangcheng County, Henan Province, with its reference section being situated in the area extending from the Xiahewan Reservoir to the vicinity of the Wumiao Temple of Gushi County, Henan Province.
Synonym: （朱集组）
Lithology and Thickness
Lower part is composed of purple conglomerates. Middle part is grey and yellow-brown lithic arkosic sandstones. Upper part consists of purple sandstones and siltstones, intercalated with conglomerates and sandy conglomerates. The total thickness of the strata is 2200 m.
Relationships and Distribution
Lower contact
Its basal part is in an unconformable contact with the underlying Lower Carboniferous Huayuanqiang Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Duanji Fm
Regional extent
It is distributed in the area extending from the Wenshu Temple of Guangshan County to the Zhuji Market of Shangcheng County in eastern Qinling Mts, entering the territory of Anhui Province easterly. The best development of the formation is found to occur at the Wumiao Temple of Gushi County. In the Saliping area the thickness of the formation is reduced to be 1393 m, yet the thickness of the basal conglomerate is increasing up to 200 m.
GeoJSON
Fossils
No fossil has been found from the formation so far.
Age
Depositional setting
The formation belongs to fluvial-lacustrine deposits.
Additional Information