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作者综述了龙首山地区元古宙的地层岩性组合、岩石地球化学、年代学等特征,证明龙首山地区在整个元古宙期间的地质构造背景为大陆裂谷环境。结合甘肃金川铜镍硫化物矿床年代学进展(单颗粒锆石U-Pb年龄约827Ma),界定了金川矿床成岩成矿的地质背景为新元古代的裂谷环境,可能与Rodinia大陆裂解有关,但不具备地幔柱成因的诸多特征。
The authors summarize the Proterozoic stratigraphy and lithology assemblage, lithogeochemistry and geochronology in the Longsonshan area, and prove that the geotectonic background of the Longsishou area during the entire Proterozoic was the continental rift environment. Based on the chronological progress of the Jinchuan copper-nickel-sulphide deposit in Gansu (U-Pb dating of single grain zircon about 827 Ma), the geological setting of the Jinchuan deposit diagenesis and mineralization is the Neoproterozoic rifting environment, which may be related to the Rodinia continental fracture. But do not have many characteristics of mantle plume causes.