摘要
研究表明，太华群是小秦岭地区金矿床的矿源层。通过对比混合岩化、花岗岩化、围岩蚀变和成矿作用过程中的微量元素的分布情况，发现Ａｕ和Ｐｂ、Ｃｕ、Ａｇ、Ｚｎ等在这一系列过程中始终表现出变化的一致性，说明Ａｕ等成矿物质来源于太华群变质岩，同位素证据也表明Ａｕ等成矿物质来源于太华群。
Based on the geological development history of Xiaoginling district ,Taihua group is con-sidered the possible source bed of ore-forming materials of Xiaoqinling gold deposits， Theconcentration changes of trace elements of rocks and／or ore throughout migmatitization，granitization，alteration and mineralization show that the changes of Au concentration is inaccordane with that of other ore－forming materials such as Pb，Cu，Ag，Zn，etc. all thetime。It suggests that the ore-forming materials come from Taihua group．Furthermore，iso-topic data also show the ore-forming materials come from Taihua group.
