摘要
中条山铜矿富集区,主要有铜矿峪斑岩型铜矿床和胡篦型、落家河型、横岭关型海底喷流沉积变质型铜矿床。四个铜矿床深部流体包裹体的碳、氧同位素分析样品,无一例外地均落在有关图解上的“地幔多相体系—花岗岩区”与“海相碳酸岩区”之间,表明它们属于低温蚀变作用成矿的一套热液矿床组合。矿石的1δ3CPDB值为-3.3‰^-8.3‰,δ18OSMOW值为10.1‰~19.83‰,包裹体的K/Na<1,富含铜,这些资料显示中条铜矿富集区是深部流体(地幔流体和岩浆流体等)、大气降水和地壳物质组成的极其复杂的成矿系统。
There are two main types of copper deposits in the Zhongtiaoshan area, the porphyry copper type represented by the Tongkuangyu deposit and the metamorphosed submarine exhalative type represented by the Hu-Bi, Luojiahe and Henglingguan deposits. Carbon and Oxygen isotope compositions of these four deposits are plotted unexceptionally between the ＂mantle multiple system-granite＂ and the ＂marine carbonate＂ areas on the δ^18OSMOW constitute an assemblage of hydrothermal deposits. vs. δ^13 CPDB diagram,indicating that these deposits The ores characterized by δ^13 CPDB between - 3.3‰ and - 8.3‰, δ^18OSMOW between 10.1‰ and 19.83‰, fluid inclusions with K/Na〈1 and enrichment in Cu, suggesting that the deep-sourced fluids are very complicated ore-forming systems composed of mantle fluids, magmatic fluids, meteoric water and crustal components.
出处
《地质调查与研究》
2006年第1期30-37,共8页
Geological Survey and Research
基金
"全国铜矿找矿攻关"科研项目部分成果
关键词
深部流体
碳、氧同位素组成
包裹体
铜矿床
中条山
deep-sourced fluid
carbon and oxygen isotope composition
fluid inclusion
copper deposit Zhongtiaoshan
