The sedimentary copper deposits in Silurian System in North Qilian area,Gansu Province,occur in red and green clastic rocks.

• 甘肃北祁连山志留系沉积岩铜矿产于红绿交替碎屑岩系中,矿体产在志留系旱峡组灰绿色砂岩层的底部,具有明显的层控特征。