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研究区位于北祁连山西段,区内出露有南北2个火山穹窿,分别为南侧的清水沟—香子沟火山穹窿和北侧的大柳沟—白柳沟火山穹窿;北侧穹窿中已发现的矿床均产出于穹窿周边,而南侧穹窿中目前发现的矿床产出于穹窿的中心,研究认为矿床与火山穹窿关系十分密切。矿田中铜多金属矿床均产出于酸性火山岩中,LA-ICP-MS单颗粒锆石U-Pb测年,获得含矿酸性火山岩成岩年龄为(502.6±3.1)Ma,表明清水沟—白柳沟矿田成岩成矿时代为中寒武世,含矿火山岩系形成环境为大陆裂谷环境,是新元古代Rodinia超大陆裂解作用的产物。
The study area is located in the western section of the northern Qilian Mountains. There are 2 volcanic domes north and south exposed in the study area, namely the Qingshuigou-Xiangzigou volcano dome in the south and the Daliugou-Bailiu volcano dome in the north, and the volcanic domes found in the northern dome The deposits are all produced in the perimeter of the dome, while the deposits found in the southern dome are now at the center of the dome. The study shows that the deposit is very close to the volcano dome. The Cu-polymetallic deposits in the orefield are both produced in acidic volcanic rocks. The LA-ICP-MS single-grain zircon U-Pb dating results in an (502.6 ± 3.1) Ma ore-bearing volcanic rock diagenetic age, indicating that the Qingshugou- The ore-forming age of the orefield was Middle Cambrian, and the ore-forming volcanic rocks formed the continental rift environment and was the product of the Neoproterozoic Rodinia supercontinental pyrolysis.