The Dabaoshan deposit in Northern Guangdong Province, South China, is a Cu–Mo–W–Pb–Zn polymetallic deposit, located in the southern part of the Qin–Hang porphyry–skarn Cu–Mo ore belt. The deposit mainly comprises porphyry Mo and stratiform skarn Cu ore deposits. The genesis of the Cu ore deposit has been ascribed to a typical skarn ore deposit formed by the metasomatism of Devonian carbonate rock layers or to a volcanic rock-hosted massive sulfide deposit formed by marine exhalation. In this paper, we report on the homogenization temperatures and salinities of fluid inclusions and C, H, O, S, and Pb isotopic compositions of fluids and minerals in this deposit. Homogenization temperatures and salinities of fluid inclusions in garnet, diopside, quartz, and calcite provide information on the skarnification, mineralization, and postmineralization stages. The data show that ore-forming fluids experienced a continuous transition from high temperatures and salinities to low temperatures and salinities over the entire period of mineralization. C, H, and O isotopic compositions indicate that ore-forming fluids were derived mainly from magmatic water. O isotopic compositions indicate that ore-forming fluids mingled with atmospheric water during the last stage of mineralization. Sulfur in the ore came mainly from deep magmatic sources. Pb isotopic compositions in the orebody show that almost all the lead in the ore was derived from magma with a crustal source. Combined geological, geophysical, and geochemical data were achieved before we proposed that the Dabaoshan porphyry–skarn Cu–Mo–W–Pb–Zn deposit, as one member of the Qin–Hang porphyry–skarn Cu–Mo ore belt, formed during the Jurassic subduction of the paleo-Pacific plate beneath the Eurasian continent at quite low angle. NEand EW-trending structures controlled the emplacement of magmatic rocks in the South China region. In the mining area, the Xiangguanping Fault and its branches were the main conduits for magmatic crystallization and mineralization. The many subfaults, folds, and interlayer fracture zones on both sides of the main fault provided the requisite space for the ore and, together, were the controlling structures of the orebody.

中文翻译：

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华南粤北大宝山铜多金属矿床流体包裹体及C、H、O、S、Pb同位素组成

华南粤北大宝山矿床是一个铜-钼-钨-铅-锌多金属矿床，位于秦-杭斑岩-矽卡岩铜-钼矿带南部。矿床主要为斑岩钼矿和层状矽卡岩铜矿床。铜矿床的成因归结为泥盆纪碳酸盐岩层交代形成的典型矽卡岩矿床或海相呼气形成的以火山岩为主的块状硫化物矿床。在本文中，我们报告了该矿床中流体包裹体的均质化温度和盐度以及流体和矿物的 C、H、O、S 和 Pb 同位素组成。石榴石、透辉石、石英和方解石中流体包裹体的均质化温度和盐度提供了关于岩化、矿化、和后矿化阶段。数据表明，在整个成矿过程中，成矿流体经历了从高温高盐到低温低盐的连续转变。C、H、O同位素组成表明成矿流体主要来源于岩浆水。O 同位素组成表明，在矿化的最后阶段，成矿流体与大气水混合。矿石中的硫主要来自深部岩浆源。矿体铅同位素组成表明，矿石中铅几乎全部来自地壳源岩浆。在我们提出大宝山斑岩-矽卡岩铜-钼-钨-铅-锌矿床作为秦-杭斑岩-矽卡岩铜-钼矿带的一个成员之前，综合了地质、地球物理和地球化学数据，形成于侏罗纪俯冲欧亚大陆下方的古太平洋板块以相当低的角度。NE和EW向构造​​控制了华南地区岩浆岩的侵位。在矿区，香官坪断裂及其分支是岩浆结晶成矿的主要通道。主断层两侧的众多次断层、褶皱和层间断裂带为矿石提供了必要的空间，共同构成了矿体的控制构造。香官坪断裂及其分支是岩浆结晶成矿的主要通道。主断层两侧的众多次断层、褶皱和层间断裂带为矿石提供了必要的空间，共同构成了矿体的控制构造。香官坪断裂及其分支是岩浆结晶成矿的主要通道。主断层两侧的众多次断层、褶皱和层间断裂带为矿石提供了必要的空间，共同构成了矿体的控制构造。