Did China Import Metals from Africa in the Bronze Age?

The origins of the copper, tin and lead for China's rich Bronze Age cultures are a major topic in archaeological research, with significant contributions being made by archaeological fieldwork, archaeometallurgical investigations and geochemical considerations. Here, we investigate a recent claim that the greater part of the Shang‐period metalwork was made using metals from Africa, imported together with the necessary know‐how to produce tin bronze. A brief review of the current status of lead isotopic study on Shang‐period bronze artefacts is provided first, clarifying a few key issues involved in this discussion. It is then shown that there is no archaeological or isotopic basis for bulk metal transfer between Africa and China during the Shang period, and that the copper and lead in Shang bronze with a strongly radiogenic signature is not likely to be from Africa. We call for collaborative interdisciplinary research to address the vexing question of the Shang period's metal sources, focusing on smelting sites in geologically defined potential source regions and casting workshops identified at a number of Shang settlements.     

A long-distance copper alloy trade to the North Eastern Baltic during the late pre-Roman and Roman Iron Age (250 BCE–450 CE) explored with lead isotope MC-ICP-MS

The North Eastern Baltic has no copper resources of its own, meaning that Cu alloy was imported either as raw material or as finished objects. The north-eastern coastline of Estonia during the late pre-Roman and Roman Iron Age was connected to the south by sea to the long-distance ‘amber’ trade route and to the east by Russian river systems. This study quantitatively assesses the direction of the Cu alloy supply in the region before and after brass enters circulation at the beginning of the Roman Iron Age. After an initial portable X-ray fluorescence (pXRF) survey, 18 objects were chosen for Pb isotope analysis. This isotope analysis resolved a group of nine brass artefacts from the Roman Iron Age amongst a ‘melting pot’ of other Cu alloys. The similarity between the isotope ratios found in the Roman world suggests the presence of the same ‘melting pot’ in the North Eastern Baltic, possibly created by a large amount of Roman Cu alloy being traded north. No evidence for Cu alloy from Scandinavia or the Ural Mountains could be found. The hypothesis from this small study is that the Cu alloy entering Estonia was dominated by metal from Southern Europe from the late pre-Roman Iron Age and the Roman period.     

Reconstructing Neolithic groups in Sarawak,Malaysia through lead and strontium isotope analysis

Heavy stable isotope analysis of mid-late Holocene Neolithic burials from Sarawak (Malaysia) identifies groups not apparent in mortuary treatment or inferred subsistence. Isotope ratios of strontium (⁸⁷Sr/⁸⁶Sr) and lead (²⁰⁸Pb/²⁰⁴Pb, ²⁰⁷Pb/²⁰⁴Pb, ²⁰⁶Pb/²⁰⁴Pb) from adult tooth enamel show distinct groups at Niah Cave's West Mouth organized by dietary catchment. Two roughly contemporary sites, Gua Sireh and Lobang Angin, are included to assess regional heterogeneity in northern Borneo. Heavy stable isotope ratios for humans differ from sampled modern plants and archaeological fauna from West Mouth, and suggest a non-local origin for some of the West Mouth human remains. Distinct heavy isotope ratios characterize all three sites and show regional differentiation broadly consistent with geological expectations. Results supplement paleodiet and morphological analyses and have implications for clarifying Niah Cave mortuary use during the mid-late Holocene. Further and more precise geographic placement will follow through additional landscape sampling for strontium and lead isotope values.     

斯里兰卡的冶铁考古

介绍了斯里兰卡20世纪80年代以来冶铁考古研究所取得的成就。古代斯里兰卡的铁产品主要是块炼铁和高碳钢,冶铁技术主要有阿腊口腊瓦瓦的自然通风竖炉和以季风为鼓风动力的撒马纳腊瓦瓦开放性矮炉两种,可能与缅甸的自然通风竖炉、日本的踏踏拉以及西非的多哥兰地区抽风式竖炉存在某些历史联系。     

二里头文化研究的新视角——从青铜器的铅同位素比值看二里头四期的文化性质

对于二里头文化的性质问题,学术界已进行了数十年的讨论,然而直到目前,共识却仍未能达成。本文首次从青铜器铅同位素比值分析入手,对二里头文化的性质问题予以探讨。经过对偃师二里头、郑州二里岗、黄陂盘龙城、安阳殷墟等遗址出土青铜器的铅同位素比值数据的分析与讨论,我们支持二里头文化一至三期属夏文化、第四期遗存则已进入了商代纪年的观点。     

A ‘match–no match‘ numerical and graphical kernel density approach to interpreting lead isotope signatures of ancient artefacts

A new method for interpreting lead isotope ratios of artefacts is presented: a numerical and graphical ‘match–no match‘ with possible raw materials. By calculating the definite integral under the kernel density estimate plot of different mining districts, using open-access software and legacy data, the relative probability that an object is made of an ore is indicated. A match with the reference data set may indicate the true origin, while no match indicates an unknown origin, that is, not present in the data set of mineral resources. Likewise, the composite or recycled nature of artefacts can be investigated in a probabilistic manner.