新疆库斯拉甫一带铅锌矿床数量众多,规模巨大,主要包括卡兰古、乌苏里克、托库孜阿特和托吾白等矿床。矿石中w(Ba)很高,为776×10~(-6)~15 511×10~(-6)(平均6 495×10~(-6)),Th/U值为0.42~1.26(平均0.91),稀土元素含量较低,ΣREE仅为27.4×10~(-6)~87.5×10~(-6)(平均49.9×10~(-6)),矿石的δEu为0.68~1.05(除一特高值2.53外),具有弱负Eu异常。矿石的Pb同位素表生年龄为461 Ma~508 Ma,δ~(34)S为-26.2‰~+3.4‰,范围较为宽泛,δD_(SMOW)值为-114‰~-70‰(平均-92‰);δ~(18) O_(SMOW)值为-1.70‰~-15.2‰(平均-8.24‰),图6中靠近大气降水线附近。综合分析认为铅锌矿床主要形成于有海底热水活动相对贫氧的非典型淡水海相环境,区域上西侧的寒武纪中酸性侵入岩和奥陶纪地层可能为铅锌矿的形成提供了初始的成矿物质来源,成矿流体主要以大气降水为主,成矿与低温热卤水关系密切,印支造山期后侏罗纪的伸展拉伸构造为成矿热卤水及海底热液的上涌提供了通道。 There are a large number of lead-zinc deposits in the area of ​​Kuslafu, Xinjiang, which are large-scale deposits, mainly including the deposits of Calangu, Ursulik, Tokizit and Tuobai. The w (Ba) in ore is very high, ranging from 776 × 10 -6 to 15 511 × 10 -6 (average 6 495 × 10 -6), and the Th / U value ranges from 0.42 to 1.26 With an average of 0.91). The content of rare earth elements is relatively low, ΣREE is only 27.4 × 10 -6 -6 87.5 × 10 -6 (average 49.9 × 10 -6), δEu is 0.68-1.05 Except for a special high 2.53), with a weak negative Eu anomaly. The Pb isotopic ages of ore are 461 Ma ~ 508 Ma, and δ ~ (34) S is -26.2 ‰ ~ + 3.4 ‰, and the range of δD_ (SMOW) is -114 ‰ ~ -70 ‰ (average -92 ‰). The δ ~ (18) O SMOW values ​​range from -1.70 ‰ to -15.2 ‰ (average -8.24 ‰), which is close to the precipitation line in Figure 6. The comprehensive analysis indicates that lead-zinc deposits mainly formed in the atypical freshwater marine environment where seafloor hot water activities are relatively poor in oxygen. The Cambrian intermediate-acid intrusive rocks and Ordovician strata in the upper west of the region may provide an initial stage for the formation of lead-zinc deposits . The ore-forming fluid is mainly dominated by atmospheric precipitation. The mineralization is closely related to the low-temperature hot brine. After the Indo-China orogenic period, the extensional extensional tectonics of the Jurassic was the upwelling of the hydrothermal brine and hydrothermal fluids Provided access.