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中文摘要：
金龙山金矿床位于南秦岭造山带的复理石褶冲带中,赋矿围岩为碎屑岩-碳酸盐建造,矿化明显受地层岩性与韧-脆性构造发育程度的控制。矿床稀土元素地球化学研究表明,地层岩石、矿石和热液矿物的轻重稀土分异程度和特征参数基本一致,表明成矿流体应主要来自于赋矿地层。铅同位素研究表明,地层岩石、矿石和热液矿物均具有较高的放射性成因的铅同位素组成,且均落入南秦岭造山带的泥盆系范围内,暗示铅也主要来自赋矿地层。对前人已有的碳-氧-硫-氢同位素组成和流体包裹体数据综合分析表明,碳和氧应主要来自海相碳酸盐的溶解作用,硫主要来自海相硫酸盐的热化学还原反应;从成矿早阶段到晚阶段,成矿流体的δ18O及δD值向大气降水线＂漂移＂,指示成矿流体以盆地建造水和变质水为主,在晚阶段有大气降水加入。金龙山金矿床与卡林型金矿床的矿床地质-地球化学特征相似,应属于卡林型金矿床,其形成于秦岭造山带陆内造山作用过程中,多层次陆壳叠置加厚的地球动力学背景,是陆内碰撞造山作用的产物。
英文摘要：
The Jinlongshan gold deposit is located in the fold- and thrust belt of South Qinling orogenic belt and mainly hosted in the carbonate and clastic rocks. Mineralization is controlled by lithology and the degree of ductile-brittle structural deformation. Host rocks, ores and hydrothermal minerals have similar REE distribution patterns with ap- proximate （La/Yb）N, δEu and δ Ce values, which indicates that the ore-forming fluids are probably derived from host rocks. Lead isotopic date indicates that host rocks, ores and hydrothermal minerals have relatively high radiogenic lead isotopic compositions. The lead isotopic ratios of host rocks, ores and hydrothermal minerals fall in the area of Devonian strata of South Qinling orogenic belt, which suggest that the lead was also derived from host rocks. The known C-O-S-H isotopic compositions and fluid inclusion data indicate C and O of ore-forming fluids are mainly sourced from the dissolution of marine carbonate, and S is originated from the thermochemical reduction of marine sulfate. The δ^180 and δD values of ore-forming fluids decreased gradually from early to late mineralization stage, reflecting devolatillizaton of sediments and metamorphic in origin and being mixed with meteoric water in late stage. In terms of the geological-geochemical characteristics of the Jinlongshan gold deposit being similar to Carlin-type gold deposit, it can be classified to the class of Carlin-type gold deposit. The Jinlongshan gold deposit formed in the intra- continental subduction tectonic setting and was a result of intralcontinental orogeny of Qinling orogenic belt.
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