沙沟一带是河南省重要的银铅矿集区，具有矿床多，矿脉薄，品位高，大延深的特点，引起国内外投资者和学者的关注。通过对成矿地质背景和矿床特征的总结，进一步分析研究区微量元素和稀土元素的变化，揭示成矿演化的内在规律，结合S、Pb同位素和成矿年代学的特点，初步认为中生代时期，随着大规模成矿作用的发生，基底太华岩群在地壳深处部分熔融，经过复杂的演化，形成富含银、铅的成矿流体，上侵至构造薄弱部位成矿，成矿时代大约为距今125～147 Ma。%Shagou area is an important silver-lead ore concentration area in Henan Province, and its big amount of deposits, narrow veins, high-grade and extension of deep cause the attention of domestic and foreign investors and scholars. Based on the summary of the geological background and the characteristics of the deposit, this paper further analyzes the changes of microelements and rare earth elements in the study area, and reveals the inherent regularity of metallogenic evolution. According to the characteristics of S, Pb isotope and mineralization chronology, preliminary view is that the basement Taihua Group partially melted in the depth of the earth crust with the occurrence of large-scale mineralization, forming the ore-forming fluids of the silver-rich, lead, intrusion to the weak parts of structure mineralization after the evolution of complex in Mesozoic era, metallogenic epoch about 125~147 Ma.
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