Abstract:

The wall rocks of gold deposits located in Zhaoyuan gold mineralization area were rooted in metamo‘phic rocks in Jiaodong rock group in Archaean era and granites in Mesozoic era．The average values of δ³⁴S in Jiaodong rock group，granites and gold deposits are 7.4‰，6.9‰and 8.1‰respectively．
Three positive values increase successively，so they have sulfur homologue and continuity in evolvement．Lead isotope is similar to sulfur isotope，the average values of ²⁰⁷Pb/²⁰⁴Pb in Jiaodong rock group，granites and gold deposits are 15.381，15.562 and 15.475 respectiveb，and it is very clear that their values are all less than the average value of basalt rooted in mantle 18.269．The μ values in lead isotope are all less than their critical value 9.58, so it is indicated that lead was rooted in rocks formed at the same structural settings．In addition，it is also indicated by contact relations among them that Jiaodong rock group，granites and gold deposits are the evolutive results at the different geological stages with the same mineral source rock．

Key words: gold deposit, sulfur isotope, lead isotope, Zhaoyuan, Shandorlg province