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祁连-龙首山地区发育多处镁铁-超镁铁质岩体,其成矿表现及与金川矿床所代表的大规模岩浆事件的关系尚不清晰。本次研究通过区域地质建造对比、详细剖面刻画,岩石学、地球化学辅助,厘定了祁连-龙首山地区镁铁-超镁铁质岩体年代学格架与含矿性评价,初步表明金川超大型岩浆铜镍硫化物矿床是新元古代大规模岩浆事件的产物,可能与诺迪尼亚超大陆的裂解所导致的大火成岩省有关。在其外围,发育有多期镁铁-超镁铁质岩体,尽管南祁连化隆地区所发现的镁铁-超镁铁质岩体与金川铜镍矿为非同期的产物,但也表明是一期比较重要的岩浆铜镍矿成矿事件,对于拓展区域找矿实现找矿突破具有重要作用。
The development of multiple mafic-ultramafic rocks in the Qilian-Longsashan area shows that the relationship between the ore-forming behavior and the large-scale magmatic events represented by the Jinchuan deposit is not clear. The study determined the geochronological framework and ore-bearing evaluation of mafic-ultramafic rock mass in Qilian-Longshanshan area through regional geological construction contrast, detailed profile depiction, petrology and geochemical aids, and initially indicated The Jinchuan super-large magmatic copper-nickel-sulfide deposit is a product of the Neoproterozoic large-scale magmatic events and may be related to the large igneous province due to the cracking of the Nordidia supercontinent. In its periphery, there are multiple stages of mafic-ultramafic rocks. Although the mafic-ultramafic rocks and the Jinchuan-Cu-Ni deposits found in the Hualong area of the southern Qilian are non-contemporaneous products, they also indicate Is a more important magmatic copper-nickel ore metallogenic event, which plays an important role in expanding ore prospecting in the region.