Archaeometry最新文献

Changes in the composition of various chemical elements in ancient nephrite artifacts due to prolonged burial are critical factors that should not be underestimated. However, the increasingly stringent heritage management has made many techniques impractical. Consequently, portable X-ray fluorescence (pXRF) has become an indispensable nondestructive field analysis method. This paper aims to make use of the pXRF dataset to distinguish which elements tested are endogenous or exogenous, as well as to gauge which elements have been affected by stronger burial effects. More specifically, we carry out this work on the example of 103 pieces of nephrite excavated from different cemeteries in the Nanyang area. In addition to traditional statistical techniques, a new tool, the concentration-number (C-N) fractal method can shed new light on the analysis of the distribution patterns of different elements in excavated nephrite. The anomalous boundaries generated by the method have clear geochemical significance and can be delineated between background zone and disturbed regions. The degree of resistance of different elements to fluctuations in external factors was assessed, which has a direct relationship with the content of the buried soil. Considering the richness of the model, it has the potential to be used in archaeometrics.

This paper examines newly acquired and previously published carbon and nitrogen isotope values in bone collagen from 58 dogs (Canis familiaris) dated to the Mesolithic–Neolithic transition. Using the Bayesian mixing model FRUITS, we estimate the marine or freshwater dietary fractions. These estimates, together with a radiocarbon-based Bayesian statistical model, have allowed us to calculate the freshwater reservoir age for selected Danish regions. The Ertebølle and Funnel Beaker cultures display different feeding traditions, and stable isotope values of dogs cannot be used as a direct proxy for reconstructing human diet, as the foodstuffs appear to have been subject to some deliberate differentiation.

The systematic studies of composition and spatial distribution of main phases inside volume of 25 fragments of Byzantine ceramic obtained in archeological works in the Dobrudja region, Romania, have been performed using neutron diffraction and tomography, and Raman spectroscopy. The obtained structural data on the content of phases, the presence of calcite grains and pores, and the uniformity of phase spatial distribution made it possible to systematize the studied fragments and correlate them with clay sources or pottery workshop. The experimental possibilities of neutron methods of nondestructive structural diagnostics as well as the structural markers provided by them in the studies of ceramic samples are discussed.

This paper analyzes and identifies the binders used in the jewel settings of the Baodian and Diexie belts excavated from the tomb of Murongzhi in Wuwei, Gansu, China. Fourier transform infrared spectroscopy (FTIR) indicated the presence of protein in the binder samples. The result of gas chromatography–mass spectrometry (GC-MS) shows that samples from both contained hydroxyproline, a characteristic amino acid for animal glue. Principal component analysis was performed on one of the samples, and it was concluded that the binder was a mixture of hide glue and egg glue. Further analysis using scanning electron microscopy with energy-dispersive X-ray (SEM-EDX) and laser Raman spectroscopy (Raman) found that a red particulate matter visually identified in the binder was cinnabar, which was apparently added to binder in order to modify the color of the jewels. This study provides a basis for the conservation and restoration of future finds of elite jewelry. It also shows how imperial jewelry was made during the Tang Dynasty. Finally, the analysis of these heraldic belts provides a key insight the life and role of an exiled prince in the Tang court.

Metallographic examination and compositional study of slag inclusions on iron objects unearthed from Xuechi in Shaanxi, China, have revealed the smelting and manufacturing techniques employed at this Western Han dynasty sacrificial site. The results suggest two production systems among the samples: all knives, nails, and farming implements were made from cast iron that had been decarburised/malleablised through annealing or fining process. It is proposed that these samples were produced in designated state-owned workshop. Two horse-bit sets, on the other hand, were forged into shape using both bloomery iron and fined iron from various sources, with possible repairing and recycling involved in the manufacturing process. It is therefore argued that the horse bits found in the site came with the horse and had been produced separately from the other iron objects. Furthermore, this paper argues that although cast iron-based production was the main method for large-scale iron production, small-scale bloomery iron smelting may have been practiced during the Western Han dynasty in certain regions as an alternate but economically viable method.

In the present study, red slip wares excavated from the ancient city of Germanicia (modern Kahramanmaraş, Southeastern Anatolia) were subjected to an archaeometric analysis. A multi-analytical approach was employed, including stereomicroscopy, optical microscopy, XRPD, SEM-EDS, and XRF to explore the mineralogical and chemical compositions of the samples. Based on both archaeological and archaeometric criteria, the samples were classified into three main categories: African, Phocaean, and Sagalassos red slip wares. The African red slip wares were characterized by an abundance of coarse quartz inclusion, accompanied by lesser quantities of plagioclase and mica. The Phocaean red slip wares primarily consisted of quartz, feldspar, and mica. In contrast, the Sagalassos red slip wares featured a groundmass rich in quartz, mica/biotite, hematite, and opaque minerals. Thermoanalytical data indicated that all samples were fired at temperatures between 800 and 900°C. The results suggest that red slip wares found at Germanicia were not manufactured using local available clay sources but rather originated from different regions. This evidence further provides that Germanicia was actively involved in trade networks and interacted with various ancient urban centers, such as Africa, Phocaean, and Sagalassos, during the Late Roman Period, between the fourth and fifth centuries AD.

The publication presents the functions of the SLAG software created to recreate historical metallurgical processes. SLAG allows for determining the smelting temperature, the viscosity of the metallurgical melt, and the oxygen and sulfur fugacities during smelting. With software, both liquidus temperature and melt viscosity can be calculated using different models, covering the range of chemical compositions of historical slags as wide as possible. Based on thermodynamic calculations, SLAG allows the performance of O₂ and S₂ fugacity calculations in the temperature range of 1000–2000 K (727–1727°C). The range of applicability of other properties (viscosity and liquidus temperature) depends only on the limitations of individual models. Using SLAG, it is also possible to create predominance area diagrams (PADs) and diagrams that consider the viscosity's dependence on temperature for slag of a given chemical composition. Based on glass transition temperature (Tg) and melt fragility, it is also possible to reconstruct the conditions that prevailed during the various stages of historical glass manufacturing processes.

Bronze and iron objects from the middle-class Xiongnu burials at Tamiryn Ulaan Khoshuu were examined for technology and chronology. The bronze objects were made from copper–tin–lead alloys, mostly for ornamental purposes, while the iron objects were household items made of cast iron. Radiocarbon measurements dated the site to the 4th century bce to the 1st century ce. The results revealed two key factors: (1) Xiongnu style material culture established by incorporating various contributions from across Eurasia at an earlier date than previously supposed; and (2) the emergence of regionally stratified material culture suggesting intimate political relationships consistently maintained between geographically distant Xiongnu communities.

Shijia Yucun site is a northwestern settlement from the Zhou period (1046–221 BCE). Faience beads used as a personal ornament and coffin decoration are notable among plenty of funerary objects. Thirteen faience objects are determined using analytical electron probe micro-analysis (EPMA) and scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM–EDS). The information on their provenance indicates that the types of faience beads around bodies include the mixed-alkali faience from Europe or the Eurasian Steppe, the soda-enriched faience from West Asia, and the local products rich in potash. However, faience samples adorning coffins are all local products, and the quality is rougher compared to the faience decorating the body. This unique feature is hardly found in other tombs of Zhou elites. As faience was a precious personal ornament in other stronger polities, it was already available as a general coffin decoration in such a small-economy feudal state, so faience samples decorating coffins were not likely to be precious gifts from other elites. It is reasonable to assume that faience beads adorning coffins might have been made near the ruins. This investigation is significant to reveal the cultural exchange in the western frontier of the Zhou realm that dates back to the power decline of the Western Zhou period and highlight a possible high-potash faience production area.

Chemical and lead isotope analyses aided by metallographic examination of copper axes found at the Late Neolithic settlement of Kietrz in southwestern Poland provide new evidence for the origin of copper and metal trade routes in the region. Our results indicate that metal used for the axes could be sourced from copper mines in modern Slovakia, Bulgaria and perhaps Serbia. The evidence from this study confirms that the Funnel Beaker people from Poland became parties to a metal trading network that connected much of continental Europe in the mid-4th millennium bce and provides a better understanding of how these contacts provided the background for the technological and socio-economic developments of the Baden era.