Relationship between Surface Copper Mineralization and Salt Dome System in
- 责任者：Cao Yangtong (Institute of Mineral Resources ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Liu Chenglin
- 刊名：Mineral Deposits
- 出版年：2010
- 卷期：29(3)
- 关键词：铜矿 ; copper ores ; 盐丘构造 ; salt domes ; 库车坳陷 ; Kuche Depression
- 页码：p.553-562
- 图表：5 illus., 2 tables, 16 refs.
- 分类号：1001
- issnNo：ISSN0258-7106
- isbnNo：CN11-1965/P
A series of Neogene salt domes are developed in Kuqa basin. Up till now, 36 salt domes have been found by remote sensing and field morphologic investigation, which are mainly scattered in Qiulitage tectonic belt in the south and Kelasu tectonic belt in the north, exhibiting EW-trending faulted zonal distribution. Surface copper mineralization is developed near the salt dome, lies at the axial parts of the two large tectonic belts (anticlinal belts), somewhat close to the two limbs, and consists of four types, i.e., sandstone type, mudstone type, limestone type and sulfide-bearing quartz vein type. Scanning electron microscopic analysis reveals that salt rock samples from the salt dome contain native copper and atacamite, suggesting that the salt dome could provide copper for surface copper mineralization, whereas the salt in the brine was derived from the solution of salt and gypsum in the salt dome.