广州地区出土西汉青铜器矿料来源分析

广州地区出土汉代青铜器数量众多，在考古学方面研究成果不少，但通过科技考古研究其产地的却不多。为研究广州地区出土西汉青铜器矿料来源，通过对广州出土西汉青铜器进行成分分析和铅同位素比值测试，与广西、江西、云南、贵州、安徽、湖北、河南、河北、北京等地出土同时期青铜器成分进行比较，发现西汉中晚期各地青铜器合金配比情况基本趋同。且根据含砷等微量元素这一显著特征，认为与广西合浦出土同时期青铜器矿料可能来自同一个地方。测试的铅同位素比值高度集中，其矿料应该来自同一个地方。分别与广东、贵州、云南、陕西、河南等地战国至西汉青铜器铅同位素比值进行比对，发现与广东、贵州、云南出土青铜器矿料来源同属一个大的成矿区，与河南、陕西等地明显区别。验证了学者们在考古学研究认为岭南地区出土西汉青铜器产自本地的观点。

Study of the mineral source of Western Han bronzes unearthed in Guangzhou

A large number of Han Dynasty bronzes unearthed in Guangzhou have brought about many achievements in their archaeology, but there are fewer studies of their provenances using archaeometric methods. In this study, the compositions and lead isotope ratios of the Western Han Dynasty bronzes unearthed in Guangzhou were analyzed and then compared with those of bronzes from the same period unearthed in Guangxi, Jiangxi, Yunnan, Guizhou, Anhui, Hubei, Henan, Hebei and Beijing. According to their remarkable characteristics of being arsenic-containing, it was believed that they might share the same mineral source with the bronzes from the same period unearthed in Hepu, Guangxi. The lead isotope ratios tested were highly concentrated, indicating the mineral should come from the same place. Through the comparison of lead isotope ratios of bronzes from the Warring States Period to the Western Han Dynasty in Guangdong, Guizhou, Yunnan, Shaanxi and Henan, it was found that the bronzes unearthed in Guangdong, Guizhou and Yunnan belonged to a large ore-forming area, obviously different from those unearthed in Henan and Shaanxi, etc. It was verified that the Western Han Dynasty bronzes unearthed in the Lingnan region were native to local places.