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首次利用锆石U-Pb方法测得北祁连山西段石居里辉长岩的生成年龄为(457.9±1.2)Ma。在空间上,石居里辉长岩与石居里铜矿紧密相关,石居里辉长岩位于石居里铜矿的下部;在时间上,虽然目前尚无石居里铜矿的成矿时代年龄,但研究认为与石居里辉长岩同属加里东期,而且成岩时代早于成矿时代,因此推测石居里辉长岩为可能为石居里铜矿提供了热源。由于该区有较多的中酸性岩体存在,该成岩时代的确定对于在该区寻找塞浦路斯型块状硫化物矿床有重要的理论和实际意义。
For the first time, the age of formation of the Shijuli gabbro in the western segment of the North Qilian Mountains measured by zircon U-Pb method was (457.9 ± 1.2) Ma. Spatially, the Shiguri gabbro is closely related to the Shijuli copper deposit, and the Shuli curico-gabbro is located in the lower part of the Shijuli copper deposit. In spite of the fact that there is no mineralization age for the Shurui copper deposit, It is believed that both the gabbro and the gabbro belong to the Caledonian period, and the diagenetic period is earlier than that of the mineralization. Therefore, it is speculated that the Shiguri gabbro may provide a heat source for the Shijuli copper mine. Due to the presence of more acidic rocks in the area, the determination of the diagenetic age is of great theoretical and practical significance for the search for the Cyprus-type massive sulfide deposits in this area.