Qaidam Basin is one of the four great basin in China, with the highest terrain. Qaidam is not only a salt world (there are many salt lakes and swamps in the southeast), but also rich in oil, coal and various metal deposits, such as oil in Lenghu, coal in You Xiang and lead-zinc mine in Xitieshan. Therefore, the Qaidam Basin has the reputation of "cornucopia".
Extended data:
Geological structure of Qaidam basin
The ratio of the inner edge of the Gobi belt in the northwest of the basin is high, and the hills below 100 meters are clustered. The southeastern part of the basin has serious subsidence, and the alluvial area and lake plain are vast. Major lakes, such as South and North Horuson Lake and Dabson Lake, are distributed here. There are large swamps in the lower reaches of Qaidam River, Sulingole River and Golmud River and around the lake. ?
Due to the uplift of a series of low mountain fault blocks of metamorphic rocks in the northeast of the basin, a secondary small intermountain basin was formed between the basin and Qilian Mountain. From west to east, there are Huahaizi, Dachaidan, Delingha and Wulan basins in turn, and the rivers in these basins pour into lakes in their low-lying centers respectively.
Baidu Encyclopedia-Qaidam Basin