Journal of Archaeological Science最新文献

Evidence of different compound resin-based adhesives is present in South Africa from at least 77000 years ago. Ancient glue production is considered one of the oldest known highly complex technologies, requiring advanced technological and mental abilities. However, our current knowledge of adhesive materials, recipes, and uses in South Africa is limited by the lack of in-depth analysis and molecular characterization of residues. To deepen our knowledge of past adhesive technology, we performed a detailed multi-analytical analysis (use-wear, XRD, μ-CT, IR spectroscopy, GC-MS) of 30 Later Stone Age tools with adhesive remains from Steenbokfontein Cave, South Africa. At the site, tools made of various rocks were hafted with compound adhesives, and we identified three recipes: 1) resin/tar of Widdringtonia or Podocarpus species combined with hematite; 2) resin/tar of Widdringtonia or Podocarpus species mixed with hematite and another plant exudate; 3) resin/tar without hematite. The studied scrapers were used in hide-working activities, and the studied cutting tools were used to work animal and soft plant matters. All scrapers display evidence of intense resharpening and were discarded when no longer useable. The combination of different methods for residue analysis reveals the flexibility of adhesive technology at Steenbokfontein. Despite the consistent use of conifer resin/tar throughout the sequence, we observed that other ingredients were added or excluded independently of the tools’ raw materials and functions. Our results highlight the long-lasting tradition of using adhesive material from conifer species but also the adaptability and flexibility of adhesive traditions. The systematic application of this multi-analytical approach to Pleistocene adhesives will be useful to better characterise adhesive traditions and enhance the debate on the technological, cognitive, and behavioural implications of this technology.

Building the UNESCO World Cultural Heritage site of Liangzhu City and its hinterlands was an enormous undertaking that required an unprecedented level of architectural innovations, clever logistic planning, and sophisticated labour organisation. We draw on environmental, archaeological and experimental data on the preparation and construction of grass-wrapped clay blocks at the Liangzhu City and investigate the importance of technological innovations to understand architectural energetics and labour organisation behind the unprecedented urbanisation at Liangzhu and beyond in prehistoric Yangtze Delta region. We estimate that each clay block took only around 5 min to prepare by 2–4 workers. Considering digging and other tasks, a small group of 3–4 workers would have been the most efficient arrangement in the preparation of grass-wrapped clay blocks. We reproduced different types of clay blocks, classified their sizes, and identified the standard sized (45x15 × 15cm) clay blocks that match with archaeological finds. Our results also show that standard-sized clay blocks had a more optimal grass-earth ratio which increased the drainage efficiency of the built clay-blocked structures and their resistance to weathering in wet conditions. The different architectural technologies applied by the Liangzhu builders constituted the Liangzhu builders’ earth-building toolkit. To maximize the efficiency, labour was divided and organised according to different construction tasks. The clay-blocked structures and stone beddings were mostly built by smaller groups, who were responsible for the preparation, transportation and construction tasks. Mobilization and division of labour during these construction activities might not follow the classical top-down process. Instead, the need to apply different architectural technologies, each restrained by availability of resources, convenience of transportation, and/or intrinsic engineering properties, at construction sites in a predominantly aquatic environment, prompted a creative form of labour organisation. Our study therefore provides fresh insights into understanding labour organisation, social structure and power relations at the Liangzhu Civilisation.

The archaeological analysis of Historical mobility is an increasingly studied topic thanks to new geographic information technologies. This paper proposes a modelling exercise of the spatial behaviour of a Second Iron Age community in the Middle Tagus Valley: the hillfort of Villasviejas del Tamuja (Botija, Cáceres). Based on our knowledge of the configuration of the site and the surrounding settlements, we propose a heuristic use of a series of GIS tools to understand how the spatial relationship between both elements was structured. More specifically, we compare the results obtained with different calculation methods that combine two essential variables to address this issue: mobility and visibility relations. On the one hand, we evaluate the results with the application of an already developed methodology: the MADO analysis. On the other hand, we present a complementary procedure for the calculation of Least Cost Paths (LCP), considering the visibility as a key element in the mobility. The methodology uses the same data, in a paradigmatic case study for comparing results. The differences obtained through the use of different tools are thus evaluated in order to weigh up the additional or complementary knowledge that they can provide us with to investigate archaeological research questions such as the defensive architecture of the hillfort or the distribution of other nearby settlements.

The bleeding phenomenon, a persistent and widespread issue in the application of cobalt-bearing pigment during porcelain decoration, has spurred different civilisations to develop various response strategies to alleviate this problem. In this study, we challenge the prevailing hypotheses concerning the role of composition and viscosity in determining the bleeding effect on blue-and-white wares, proposing a novel physical model framing it as a diffusion process that occurs within vitreous silicate, where the severity can be qualitatively expressed using the diffusion distance. Drawing upon the phenomenological Fick's law and microscopic diffusion mechanism, we quantitatively discuss the primary physical parameters that influence the diffusion behaviour for the first time, clarifying that the diffusion of cobalt ions is not related to the medium viscosity. Moreover, compared with the microstructural features of blue decors with and without the bleeding effect, we reveal that domestic cobalt particles are all encapsulated by anorthite crystals, acting as a passivation shell to hinder the dissolution of cobalt particles. Significantly, our reinterpretation has broader archaeological implications for the bleeding effect associated with cobalt pigment in ceramics, elucidating the historical trajectories of responsive practices and the multifaceted interplay between resource form, artistic expression and technological advancement across varying environmental and cultural contexts. Overall, these responses to the bleeding effect exemplify the complexities of technological evolution, highlighting that technology is not merely an extension of technical knowledge but also functions as a form of social construction deeply intertwined with its local context. This comprehensive understanding contributes to our understanding of historical narratives in ceramics and the diversity of human ingenuity in ancient societies, with potential implications for contemporary pigment manufacture.

Human population growth and the technological advancements of the 20th and 21st centuries have significantly altered human-environment interactions and led to unprecedented anthropogenic footprints on coastal and ocean systems. Despite thousands of years of exploitation for subsistence and, later, commercial purposes, the ecology of mangrove fisheries along the Brazilian coast and the consequences of these activities remain poorly understood. This is largely due to a pervasive lack of historical baselines, and highlights the conservation crises affecting some of the world's biodiversity hotspots. In this study, we used otolith metrics and stable isotope analysis to investigate changes in the body length and trophic ecology of several demersal species recovered from pre-colonial (4500 cal BP to 1500 AD) and historical (late 19th and early 20th centuries AD) archaeological sites in Babitonga Bay, the largest mangrove system in southern Brazil. Our results revealed that pre-colonial and historical fisheries exploited a wide range of mangrove habitats, encompassing brackish to marine systems. Pre-colonial subsistence fisheries, however, targeted predominantly small and juvenile individuals in nursery areas, while early commercial fisheries targeted larger adult specimens, likely due to their higher commercial value. Our study shows that some drivers of stock overexploitation, such as the preferential capture of large and adult individuals, were found to be occurring more than 150 years ago along the southern Brazilian coast. Given the deep roots of human footprints in Brazil, our findings underscore the significance of incorporating historical data into the formulation of fisheries management strategies in subtropical and tropical regions.

Teeth from the Family Bovidae that are associated with our early humans ancestors are important for reconstructing paleoenvironments. However, age, degree of attrition, and taphonomic factors often make fossil identification difficult. A recent technique for classifying these teeth uses the size-and-shape of the occlusal surface as a summary of the surface, deriving features from this, and then using these features in machine learning classification algorithms. Bovid teeth have previously been classified using this method with features derived from coefficients of elliptical Fourier analysis (EFA). This study assesses the utility of using other shape representations for feature generation, specifically elastics shape analysis. Features were derived using this frame work for both shape only and size-and-shape (i.e. size is not considered a nuisance parameter), and those features were used as input for machine learning algorithms. We demonstrate that features derived elastic shape analysis generally outperform features derived from EFA in terms of cross validation classification accuracy. Finally, an application of the classification methods studied here was applied to fossils recovered from the deroofed Gladysvale External deposit (GVED), Gauteng Province, South Africa. Previous analyses of GVED identified a group of bovids as medium sized alcelaphines (Lacruz et al., 2002). Specifically, this study reclassified 32 unbroken, medium sized alcelaphines looking at shape and size-and-shape. The reclassifications increased the number of individuals and diversity of bovids recovered from the site. The results were used to generate a more precise paleoenvironmental reconstruction.

This study provides a comprehensive review of the current state of the art in marine technology as it pertains to the 3D documentation of underwater archaeological and historical sites. A thorough literature analysis of recent research is presented, with a special emphasis on vision-based approaches for 3D reconstruction and mapping. First, the paper lists different robotic platforms, various underwater imaging systems and possible combinations among them, through their use in marine archaeological research. In addition to robotic vision systems configurations, a thorough survey on computer vision solutions on image processing, online and offline reconstructions, for both simulation environments and real-world UCH scenarios, is given. The final part of the paper reviews strategies for data acquisition optimization through path planning approaches and highlights how working on synthetic data and simulation environments can enhance the quality of real-world operations. Finally, weaknesses, open issues, and future directions of research in marine robotic vision systems within the documentation of UCH are discussed.

A fragment of an ursid radius with seventeen incisions (one of them incomplete) was excavated in the 1950s in the Dziadowa Skała Cave in the Częstochowa Upland in southern Poland from a deposit with faunal remains from the Eemian (ca 130–115 kyr). This object has been cited as the earliest evidence of Neanderthal cognitive abilities in the region, but it has been never studied in detail. The artefact has now been re-examined using microscopy and X-ray computed tomography. For this study we revised the determination of the bone and studied the morphology and metric parameters of the incisions (length, width, depth and opening angle). We also used experiments, statistical analysis and an analysis of the incisions' topography to establish the techniques behind their manufacture. The obtained results show that the bone was marked using a retouched stone tool, and that the incisions were produced during a single episode by a right-handed individual using repeated unidirectional movements of the tools’ cutting edge. The incisions are evidently an effect of a deliberate action, not a side-effect of some practical activity. The bear radius from Dziadowa Skała is thus yet another piece of evidence for the emergence of symbolic culture, evolved by hominins in Africa and Eurasia, and represents the oldest example of marked bone north of the Carpathian Mountains.

The Tibetan Plateau and surrounding regions played a pivotal role in the spread of foxtail millet (Setaria italica) and broomcorn millet (Panicum miliaceum) since the late Neolithic period. However, previous research failed to analyze the spatiotemporal distribution and associated environmental factors. Herein, we collected foxtail and broomcorn millet data from 113 Late Neolithic and Bronze Age sites in the Tibetan Plateau region to reconstruct the spatiotemporal distribution, and integrated palaeoclimatic data to identify the extent of environmental factors influencing the distribution using the Maximum Entropy (MaxENT) model and Growing Degree Day (GDD) model. Our results show that the spatiotemporal distribution of millets can be classified into three routes and four stages during 6000–3500 cal yr BP. Millet agriculture thrived predominantly in areas below 2500 m asl with average summer temperature ranging from 15 to 25 °C. Temperature exerts the most significant influence on the dispersal process, followed by precipitation, distance from reliable water sources, and altitude. These findings provide important environmental insights into the spatiotemporal distribution of millets and dispersal routes surrounding the Tibetan Plateau.

This study focuses on the technological origin of stamped hard pottery, one of the precursors to Chinese porcelain, developed in the Late Neolithic period of China. 160 ceramic sherds of stamped hard wares from the Nanshan site (5300–4300 cal. BP) and Yanzaidong site (5000–4300 cal. BP) were investigated through water absorption, Vickers hardness, petrography, ED-XRF, thermodilatometry, XRD, and SEM-EDS. The results indicate that two categories of samples exhibit commendable physical properties, comparable to stoneware, attributed to specific high-alumina clay with low fluxing elements (porcelain stone), fired at high temperatures ranging from 1100 to 1250 °C. The other categories of samples appear to be defective products during firing process, or have another raw material source, contributing to a diversity of pottery at the two sites. Nanshan and Yanzaidong unequivocally emerge as the earliest known production of stamped hard pottery, dating back to 5000 cal. BP, marking a revolutionary advancement in high-firing technology during the Late Neolithic China.