皖北地区出土几件周代青铜器的铅同位素比值分析

皖北地区地处安徽淮河以北,是先秦时期南北文化交流的重要通道,也是长江中下游铜矿北进中原的必经区域之一,该地区的青铜器对于探讨长江中下游铜矿与中原青铜文化的关系至关重要.本工作采用X射线荧光光谱仪(XRF)和激光剥蚀多接收器等离子体质谱(LA-MC-ICP-MS)对出土于皖北地区4件青铜器及湖北吉家院战国楚墓出土的青铜器...

Lead Isotope Ratio Analysis of Several Zhou Dynasty Bronzes Unearthed in Northern Anhui Province

BACKGROUND: The northern Anhui region is located north of the Huaihe River in Anhui. It was an important channel for cultural exchanges between the north and the south during the pre-Qin Period. It was also a necessary area for transporting copper resource on the Yangtze River to the Central Plains. Bronzes in this area are very important for exploring the relationship between copper mines in the Middle-Lower Yangtze River and the bronze culture of the Central Plains. OBJECTIVES: In order to understand the diachronic changes of mineral resources in different periods in northern Anhui and the interaction with the surrounding bronze culture.METHODS: Laser ablation multiple-collector plasma-mass spectrometry (LA-MC-ICP-MS) and X-ray fluorescence spectrometry (XRF) were used to analyze the composition and the lead isotope ratios of 4 bronzes unearthed in northern Anhui and 4 bronzes unearthed from the Warring States Chu Tomb in Jijiayuan, Hubei Province.RESULTS: Results showed that among the 4 bronzes in northern Anhui, there were 3 lead-tin bronzes and 1 tin bronze. The copper content ranged from 60.69% to 76.65%. The tin content was generally higher, 9.66% to 33.24%, and the lead content was 0.43% to 18.07%. The composition had a large variation. The lead isotope analysis results showed that the lead isotope ratios of the samples were within the range of common lead. Two tin bronzes (WB-3, JJY-1) indicated the source of copper materials, and the rest of the samples reflected the source information of lead materials. Comparing the ores in different region, it was found that the data of the bronzes in the northern Anhui during the Western Zhou Period and the Tonglushan mining area in Hubei were relatively close. During the Warring States Period, the bronzes in the northern Anhui began to use minerals from the southern Anhui mining area. Therefore, from the Western Zhou Period to the Warring States Period, the metal resources used in the northern Anhui area began to gradually change from the Tonglushan area in Hubei to the area along the Yangtze River in southern Anhui.CONCLUSIONS: This research provides a new scientific basis for the source of minerals used in bronzes in the Zhou Dynasty in the region, and the exchange of bronze culture between northern Anhui and the surrounding areas.