安徽含山凌家滩与韦岗遗址出土部分动物遗骸的锶同位素比值分析

Strontium Isotope Ratio Analysis of Some Animal Remains Unearthed from the Lingjiatan and Weigang Sites in Hanshan County, Anhui Province

凌家滩遗址是长江下游巢湖流域迄今发现面积最大的新石器时代聚落遗址,其年代距今约5500年~5300年之间。韦岗遗址距凌家滩遗址仅2千米多,是以凌家滩遗址为核心的遗址群的一部分。经过数年考古发掘,凌家滩与韦岗遗址均出土了动物的遗骸。对这些动物的原栖息地进行追溯,将为进一步探讨该地区先民之间的交流,乃至凌家滩文化与周邻文化之间的关系提供信息。本文采用锶同位素检测技术,通过测定凌家滩与韦岗遗址出土动物遗骸的锶同位素比值,首先得到了当地的生物可利用的锶同位素比值地区特征在0. 711128~0. 713376之间,其次推测该锶同位素比值适用区大致为凌家滩遗址周边5-15千米范围内。据此锶同位素比值范围,可以推测凌家滩遗址出土的狗和鹿是当地动物,韦岗遗址出土的猪也可能为本地出生。

Lingjiatan site is located at Hanshan County,Anhui Province.It is a large settlement site of Neolithic age,and it is dated to 5500~5300 aB.P..Weigang site is only 2 km away from Lingjiatan site,This site belonged to Lingjiatan cuiture,which proved that the Lingjiatan site was not an isolated one and its high level development had its own social bases.Research on migration patterns for the ancient animal of Lingjiatan and Weigang sites is of great scholarly benefit to archaeological investigations of ancient civilizations in Neolithic Culture.In this paper,Tooth enamel and bone samples from 14 animal individuals were analyzed for strontium isotope ratio(87 Sr/86 Sr),by the thermal ionization mass spectrometry,including 10 pigs,2 deers and 2 dogs.The results show that the mean87 Sr/86 Sr ratios of 7 pigs enamel samples of Lingjiatan site were 0.712252,Based on the local bioavailabl strontium isotopes ratio range determined by the mean87 Sr/86 Sr ratios±2σof 7 pig enamel samples(0.711128~0.713376),we found that 2 deers and 2 dogs fell into this range,suggesting that these individuals were born and raised locally.3 pigs from the Weigang site fell well into the local strontium isotopes ratio range and were considered to be the local ani-mals.