成都金沙遗址铜器研究

Lead Isotopic Analysis of the Bronze Vessels from Jinsha near Chengdu

金沙遗址出土铜器的金属成分和铅同位素组成研究的结果表明 ,在合金配比方面金沙铜器基本上继承了三星堆时期的技术传统 ,用铅较多 ,铅锡青铜为主要材质类型 :大约三分之二的金沙铜器含有与三星堆铜器在铅同位素组成上高度一致的高放射成因铅 ,约三分之一的铜器属于多个产地来源的普通铅。由此可见 ,金沙时期一方面继续开采利用三星堆时期的高放射成因铅青铜原料矿区 。

Lead isotopic analysis of the bronzes from Jinsha shows that they continued the technical tradition of Sanxingdui period,that is,larger proportion of lead as an alloying element,A majority of the Jinˉsha bronzes contain high radiogenic lead,which is quite similar to the Sanxingdui bronzes.About one third of them contain ordinary lead of different sources.So,it is clear that the Jinsha period features not only a continuous exploitation of Sanxingdui mine,but a search for new mineral sources,which prove to be in the southwestern part of the country,roughly speaking.