A Study on the Relationship between Large-sized Proterozoic Igneous Provinces and Jinchuan-type Magmatic Cu-Ni Sulfide Deposits in Qilian-Longshou Mountains
ZHANG Zhao-wei, LI Wen-yuan, GAO Yong-bao
MLR Key Laboratory for the Study of Focused Magmatism and Giant Ore Deposits, Xi’an Institute of Geology and Mineral Resources, Xi’an, Shaanxi 710054, China
Abstract：The relationship between the mineralization and large-scale Jinchuan magmatic events with respect to the mafic-ultramafic intrusions in the Qilian-Longshou mountain area is not yet clear. This study redefines the geochronological framework of the mafic-ultramafic intrusions and their mineralization by comparison of regional geological formations, detailed description of sections, and petrological and geochemical analysis. The preliminary results showed that the super-sized Jinchuan magmatic Ni-Cu sulfide deposits were the products of large-scale magmatic events in the Neoproterozoic, and may be related to large igneous provinces resulting from the breakup of the Rodinia Supercontinent. There are multi-phased mafic-ultramafic intrusions in the peripheral area. Although the age of the mafic-ultramafic intrusions in the Hualong area in the southern part of the Qilian mountains is different from that of Jinchuan, they were important Cu-Ni mineralization events, which are important to mineral exploration in the region.
张照伟，李文渊，高永宝. 祁连-龙首山元古宙大火成岩省与金川型铜镍矿关系探讨[J]. 中国地质调查, 2014, 1(1): 14-18.
ZHANG Zhao-wei, LI Wen-yuan, GAO Yong-bao. A Study on the Relationship between Large-sized Proterozoic Igneous Provinces and Jinchuan-type Magmatic Cu-Ni Sulfide Deposits in Qilian-Longshou Mountains. , 2014, 1(1): 14-18.
[1] Naldrett A J. Magma Sulfide Deposits Geology,Geochemistry And Exploration [M]. Springer,2004: 1-17. [2] Mao J W, Pirajno F, Zhang Z H, et al. A review of the Cu-Ni sulphide deposits in the Chinese Tianshan and Altay orogens (Xinjiang Autonomous Region, NW China): Principal characteristics and ore-forming processes[J]. Journal of Asian Earth Sciences, 2008, 32: 184-203. [3] Keays R R, Ihlenfed C, Mcinnes B I A, et al. Re-Os isotope dating of the Jinchuan Ni-Cu-PGE, sulfide deposit, China[M]//Shellnutt J G, Zhou M F,Pang K N. Recent Advancees in magmatic Ore Systems in Mafic-ultramafic Rocks.Hong Kong SAR China: Proceedings of the IGCP 479 Hong Hong Workshop, Abstract Volume. 2004: 41-42. [4] Lightfoot P C, Naldrett A J. Geological and geochemical relationships in the Voisey’s Bay intrusion, Nain Plutonic Suite,Labrador, Canada[M]//Keays R R, Lesher C M, Lightfoot P C, et al. Dynamic Processes in Magmatic Ore Deposits and Their Application in Mineral Exploration.Geol Assoc Can Short Course Notes. 1999,13:1-30. [5] 田毓龙, 包国忠, 汤中立, 等. 金川铜镍硫化物矿床岩浆通道型矿体地质地球化学特征[J]. 地质学报, 2009,83(10):1515-1525. [6] Li C S, Ripley E M. Empirical equations to predict the sulfur content of mafic magmas at sulfide saturation and applications to magmatic sulfide deposits[J]. Mineralium Deposita, 2005, 40: 2l8-230. [7] Li C, Ripley E M . Sulfur contents at sulfide-liquid or anhydrite saturation in silicate melts: Empirical equations and example applications[J]. Economic Geology, 2009,104: 405-412. [8] 张照伟, 李文渊, 高永宝, 等. 青海省化隆县下什堂岩体地质-地球化学特征及其含矿性研究[J].大地构造与成矿学, 2011, 35(4):596-602. [9] 张照伟, 李文渊, 高永宝, 等. 南祁连化隆微地块铜镍成矿地质条件及找矿方向[J].地质学报, 2009, 83(10): 1483-1489. [10]张照伟, 李文渊, 高永宝, 等.南祁连亚曲含镍铜矿基性杂岩体形成年龄及机制探讨[J]. 地球学报, 2012,33(6): 925-935. [11]陆松年,李怀坤,王惠初,等.秦-祁-昆造山带元古宙副变质岩层碎屑锆石年龄谱研究[J].岩石学报,2009,25(9):2195-2208.
2014, Vol. 1 
