夏家店下层文化遗址出土铜器的矿料来源分析

Research on the ore sources of some bronze objects from Lower Xiajiadian culture sites

为进一步了解夏家店下层文化铜器的物料信息,探讨其矿料来源,采用多接收电感耦合等离子体质谱仪(MC-ICP-MS)对4处夏家店下层文化遗址和1处高台山文化遗址出土的部分铜器进行了铅同位素比值测定,并将测定结果同辽西地区几处金属矿的铅同位素数据进行了对比。结果表明:这4处夏家店下层文化遗址出土铜器的原料可能是使用辽西当地的大井多金属矿的矿石冶炼而成,而大山前遗址出土铜器的铅料有可能来自辽宁桓仁的多金属矿,二道井子遗址所出红铜器的铜料则可能另有来源。所属高台山文化的湾柳遗址铜器的铅同位素数据具有高放射性成因铅特征,表明其与同期其他考古学文化存在某种联系。

This paper presents lead isotopic analysis results for bronze objects from several Lower Xiajiadian culture sites and one Gaotaishan culture site.It is revealed that,except for two objects,lead isotope data of the bronzes from four Lower Xiajiadian cultural sites are quite close to each other.It is suggested that the resources of bronze objects from the four Lower Xiajiadian culture sites were most likely to be from the Dajing polymetallic deposit.It is also inferred that the bronze object with a high lead content from Dashanqian Site might be related to the Liaoning Huanren Polymetallic deposit in terms of its lead resource.The source of the raw material for an unalloyed copper object from Erdaojingzi Site is different from that of Dajing,a finding that needs further investigation in the future.The test results from Wanliu Site show that it has the characteristics of high radiogenic lead,which indicates that it had some relationship with other archaeological cultures of the same period.