Pusige Fm
Type Locality and Naming
The type section is located at Duwa about 100 km to the southeast of the Pishan County, Xinjiang. It was named by the Compiling Group on the Regional Stratigraphic Chart of the Xinjiang Uygur Autonomous Region in 1981.
Lithology and Thickness
Sandstone. Composed mainly of brown-red, grey and grey-green sandstones, sandy siltstone and a small amount of thin-bedded limestone. Thickness is 1791 m.
Relationships and Distribution
Lower contact
Conformable contact with the underlying Keziliqiman Fm
Upper contact
Regional extent
Distributed in the area to the east of the Pishan River, and is 1365-m thick in the Piyaman area, 851-m thick in the Aqike area, 512-m thick in the Buya-Pixi, and 1110-m thick in the Keziliqiman area.
GeoJSON
Fossils
Fang Zhongjie (1996) in the lower part of the formation had discovered Ostracoda fossils represented by the Whipplella-Darwinula assemblage; and Bivalves represented by the Palaeanodonda posepnyi, P. faba, etc., belonging to the Yangsingian Series. The top part of the formation yields such Bivalves seen very often in the Shajingzi Fm as Palaeomutella subparallela, Palaeanodonta subcastor, etc.; Spore-pollen fossils represented by the Apiculatisporis-Verrucosisporites assemblage and the Lueckisporites-Protohaploxypinus assemblage, with the former Spore-pollen assemblage being seen in the Shajingzi Fm, and with the latter Spore-pollen assemblage belonging already to the Lopingian Epoch. In the Celeheqik area, the formation is 851-m thick, yielding Plant fossils (phytolites) such as Compsopteris wongi, Taeniopteris multinervis, Cordaites principalis, etc., and representing lake-facies deposits.
Age
Depositional setting
It contians a lake facies in the Celeheqik area.
Additional Information