{"title":"Investigation on restoration materials and techniques on bronze artifacts using non-invasive imaging and spectroscopic methods","authors":"Wei Liu , Pengyu Zhang , Yuliang Zhao , Na Wu","doi":"10.1016/j.aia.2025.100043","DOIUrl":"10.1016/j.aia.2025.100043","url":null,"abstract":"<div><div>Archaeological bronze artifacts are often found in fragmented or damaged states during excavation, necessitating restoration before they can be displayed in exhibitions. However, many early restoration works lack detailed documentation, posing significant challenges for museum conservators and scientists who want to reanalyze these restored artifacts. Reconstructing past restoration processes via scientific analysis is becoming a fundamental job. Previous studies on restoration materials and techniques for bronze artifacts have mostly relied on micro-analytical and invasive techniques, which are limited in providing comprehensive restoration information about artifacts as a whole. The present study employed imaging techniques, including macro X-ray fluorescence spectroscopy, X-ray radiography, and ultraviolet-induced visible luminescence imaging, in combination with Raman spectroscopy and fiber optics reflectance spectroscopy, to investigate two bronze artifacts dated to the early Spring and Autumn period (770–476 BCE) in the collection of the National Museum of China. The results indicated that one of the artifacts, a bronze vessel (<em>yan</em>), exhibited extensive surface cracks and a large missing piece, which had been repaired using a copper plate joined with tin-lead soldering. Both artifacts showed evidence of surface retouching with pigments such as lithopone, lazurite, phthalocyanine blue, barium white, and chrome yellow. Lithopone, in particular, helps researchers estimate the restoration period of these artifacts, providing valuable insight into their conservation history. The integration of imaging and spectroscopic techniques proves to be an effective approach for characterizing the restoration materials and techniques applied to bronze artifacts, helping conservators in assessing the condition of restored bronze artifacts.</div></div>","PeriodicalId":100038,"journal":{"name":"Advances in Archaeomaterials","volume":"5 ","pages":"Article 100043"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ao Sun, Huimin Wu, Tian Liu, Yuchen Wang, Siran Liu
{"title":"Identifying recipes of historical cupels from Yunnan, China","authors":"Ao Sun, Huimin Wu, Tian Liu, Yuchen Wang, Siran Liu","doi":"10.1016/j.aia.2025.100044","DOIUrl":"10.1016/j.aia.2025.100044","url":null,"abstract":"<div><div>Cupellation was the most important silver extraction technology in the ancient world. No later than the Han Dynasty, China adopted cupellation in silver extraction. However, the cupel, the most significant physical evidence of this process, is not frequently identified archaeologically in China and is rarely analyzed to reconstruct the technology and material characteristics of the process. Here we present new findings from the sites of Beiyachang and Baixiangchang in Dali, Yunnan. Five used cupel fragments from the two sites were generally dated to the Ming and Qing Dynasties. Chemical and microscopic analyses show that the cupels were made primarily of a mixture of bone ash (∼30–50 wt %) and plant ash (∼50–70 wt %). Intriguingly, Chinese historical documents recorded only plant ash as the raw material of cupels and did not mention bone ash until the nineteenth century AD. Thus the current analytical result provides the first physical evidence of cupels made with a bone ash and plant ash mixture in historical China.</div></div>","PeriodicalId":100038,"journal":{"name":"Advances in Archaeomaterials","volume":"5 ","pages":"Article 100044"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ritual use, consumption, and depositional practices at Agriomernos Cave, Northwestern Samos (Greece): A ceramic analytical approach","authors":"Sergios Menelaou , Edyta Marzec , Fotis Georgiadis , Stella Katsarou , Anastasios Siros , Andreas Darlas","doi":"10.1016/j.aia.2024.100041","DOIUrl":"10.1016/j.aia.2024.100041","url":null,"abstract":"<div><p>This study utilises pottery as a proxy to identify patterns of use and consumption, as well as depositional strategies at Agriomernos, a recently discovered cave site on Samos Island (Greece). This discovery challenges our understanding of human–landscape interaction within a marginal region across two distinct prehistoric chronological episodes. As part of a broader research project, this paper presents the results from an integrated, multiscale analysis of pottery through morpho-stylistic and macroscopic examination, thin section petrography, and wavelength dispersive X–ray fluorescence spectroscopy (WD-XRF). The analysis has revealed a compositionally diverse ceramic assemblage that represents a range of different raw material sources on the island and, by extension, different groups of people. The identification of off-island imports adds new evidence to the reconstruction of Aegean connectivity patterns. Agriomernos Cave constitutes a key archaeological site within an area previously unexplored, offering a unique opportunity to investigate ancient mobility, landscape sacrality, and ritual performances manifested through periodical and repeated acts of deposition.</p></div>","PeriodicalId":100038,"journal":{"name":"Advances in Archaeomaterials","volume":"5 ","pages":"Article 100041"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667136024000141/pdfft?md5=4c6b3215fcca25da9ca7fcaccc62d32b&pid=1-s2.0-S2667136024000141-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142229798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Philip Ebeling , Liora Bouzaglou , Dana Ashkenazi , Johannes H. Sterba , Alexander Fantalkin
{"title":"From the hills to the sea: Mineralogical and chemical characterization of a roof tile assemblage from the Byzantine church at Ashdod-Yam (Israel)","authors":"Philip Ebeling , Liora Bouzaglou , Dana Ashkenazi , Johannes H. Sterba , Alexander Fantalkin","doi":"10.1016/j.aia.2024.100040","DOIUrl":"10.1016/j.aia.2024.100040","url":null,"abstract":"<div><div>This paper presents the results of a multidisciplinary approach characterizing roof tiles excavated at the Ashdod-Yam Byzantine church (Israel). Occupied from the late fourth/early fifth century CE, the building was destroyed by fire toward the end of the sixth century CE, sealed by tiles from the roof's collapse. The assemblage of 3846 roof tiles was initially classified through macroscopic and typological analysis. Selected samples were further subjected to optical microscopy of petrographic samples for provenance studies and ceramic technological insights, along with instrumental neutron activation analysis (INAA). The findings reveal the artifacts to be imported from the eastern Mediterranean ophiolitic complexes and from the Judean Hills. Additionally, fragments of painted ceramic roof tiles were tested using scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS) to assess the composition of the pigments, examine their microstructures, and understand the manufacturing technologies used. Despite the presence of different types of roof tiles, the paint applied to some of them was found to be uniform, consisting of red, ocher-based pigment, likely sourced locally and applied during the roof's construction. This comprehensive examination on a relatively unexplored type of material sheds new light on specific construction choices during the Byzantine period in the southern Levant.</div></div>","PeriodicalId":100038,"journal":{"name":"Advances in Archaeomaterials","volume":"5 ","pages":"Article 100040"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The use and disappearance of vegetal fibres in clay–sand mixtures in furnace walls in pre-seventeenth-century iron smelting sites in the Chūgoku region (Japan)","authors":"Xavier Michel-Tanaka (Associate professor)","doi":"10.1016/j.aia.2024.100030","DOIUrl":"10.1016/j.aia.2024.100030","url":null,"abstract":"<div><div>This paper investigates the importance of the presence of vegetal fibres within clay–sand mixtures in Japanese furnace walls in iron smelting sites in the Chūgoku region during the antique and medieval periods. This presence is all the more interesting as these fibres disappeared with the advent of tatara, the traditional Japanese iron smelting process, at the beginning of the seventeenth century. Understanding this disappearance is a major challenge in the study of the evolution of iron reduction in Japan. The data from archaeological excavations, despite a few scattered clues, are not yet able to give us a sufficiently clear picture of the presence or absence of these fibres in the clay–sand mixture that makes up the furnace walls. Therefore this study highlights the need for systematic research by the creation of a database combined with further analyses and experiments to understand the role fibres might have had in the iron smelting process and why they disappeared from the tatara process in Japan.</div></div>","PeriodicalId":100038,"journal":{"name":"Advances in Archaeomaterials","volume":"4 ","pages":"Article 100030"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143293687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Casting the Buddha across Southern Asia","authors":"Donna Strahan","doi":"10.1016/j.aia.2024.100029","DOIUrl":"10.1016/j.aia.2024.100029","url":null,"abstract":"<div><div>The production of copper alloy devotional images of the Buddha probably began in northern India sometime in the late second century CE but certainly by the third century. From there the transmission of copper alloy Buddha sculpture technology traveled across Asia, beginning with the earliest known images from Pakistan, Afghanistan, and the Hindu Kush regions then moving across northern India. It continued north into western China, across China, and into Korea and Japan. As the religion spread, the need for sculptures also traveled a southern route, from India into Sri Lanka, Myanmar, Thailand, Cambodia, Vietnam, and Indonesia. Early representations of the Buddha were interpreted differently from region to region, with a range of views about how to use and understand the imagery. Transmission of technique came along with the transmission of style. However, where materials were not available, an evolution of alternative materials and methods developed. These different technologies affected style, producing images of varied appearances. This paper focuses on early casting developments along the southern route from the fourth through the ninth centuries CE.</div></div>","PeriodicalId":100038,"journal":{"name":"Advances in Archaeomaterials","volume":"4 ","pages":"Article 100029"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143294086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ipsa and Odong: Decorative metalwork of Korea","authors":"Paul T. Craddock , Alessandra Giumlia-Mair","doi":"10.1016/j.aia.2023.04.002","DOIUrl":"10.1016/j.aia.2023.04.002","url":null,"abstract":"<div><div>Inlay and patination are important elements in the prestige metalwork of East and Southeast Asia. There are several regional varieties, but they have many features in common, particularly in the use of a patinated copper alloy containing small amounts of gold. This in turn may suggest a common or at least linked ancestry, but probably no earlier than the sixteenth century. Most of this metalwork is no longer produced, but in Korea, production is still practised, albeit on a small scale. Based on the authors’ visits to workshops producing these items, this paper describes the present production of <em>ipsa</em> and <em>odong</em>. In <em>ipsa</em> pieces, wires—usually made of silver, gold, or brass—are hammered into the chased surface of the body metal, predominantly copper alloy or iron, which is then patinated. <em>Odong</em> items are usually complex composites made of several separate parts carefully soldered together in stages. An <em>odong</em> is an artificially patinated special copper alloy containing small amounts of gold, into which silver can be inlaid. Conversely, an <em>odong</em> can itself be inlaid into silver. Then follows a complex process to develop the deep purple-black patination common to all these traditional pieces produced in East and Southeast Asia.</div></div>","PeriodicalId":100038,"journal":{"name":"Advances in Archaeomaterials","volume":"4 ","pages":"Article 100022"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87778818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Evaluating accuracy and inter-laboratory reproducibility of the compositional analysis of ancient bronzes","authors":"Junling Lin , Yuankai Wang , Siran Liu , Wei Qian","doi":"10.1016/j.aia.2023.100027","DOIUrl":"10.1016/j.aia.2023.100027","url":null,"abstract":"<div><div>Chemical analysis is fundamental for archaeometric study of ancient Chinese bronzes. A large corpus of compositional data on ancient bronzes has been acquired through various modern analytical instruments. However, the accuracy and reproducibility of the data have not been systematically evaluated. This renders much difficulty for the comparative study of chemical results from different laboratories. Our research evaluated the accuracy and reproducibility of the analytical data of several laboratories in China based on 10 bronze reference materials. We found that the results were fine for Cu, Sn, Fe, and Ni but relatively poor for Pb, Sb, Bi, Ag, Zn, Co, As, Mn, Al, and Cd. We also examined data distribution from multiple laboratories and analytical methods. Statistical analysis suggests that the results can be used to estimate data variation among different laboratories and that legacy data can be used in a more quantitative way.</div></div>","PeriodicalId":100038,"journal":{"name":"Advances in Archaeomaterials","volume":"4 ","pages":"Article 100027"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139017374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Meghna Desai , Thilo Rehren , Marc Gener , Mokun Shan , Haiwen Luo , S. Jaikishan
{"title":"Surface matters: Decarburising wootz crucible steel ingots","authors":"Meghna Desai , Thilo Rehren , Marc Gener , Mokun Shan , Haiwen Luo , S. Jaikishan","doi":"10.1016/j.aia.2024.100042","DOIUrl":"10.1016/j.aia.2024.100042","url":null,"abstract":"<div><div>Wootz, the Indian crucible steel, is a hypereutectoid iron–carbon alloy and famous for its outstanding qualities. Due to the paucity of archaeological and historical ingot finds and conservative sampling strategies, discussions of the homogeneity of such ingots and the microstructural representativeness of samples have remained generic and assumptive. Thus two major shortcomings in the study of crucible steel ingots include the determination of their absolute carbon content and its relative distribution across the ingots. The recent discovery of a large hoard of wootz ingots from Telangana (Jaikishan et al. 2021) offered a unique opportunity to study their microstructure and determine their carbon content.</div><div>Reports based on traditional metallography suggest a wide carbon range, from 1 to 2 wt% carbon, for similar ingots (Scott 2013). Recent work based on image analysis (Desai and Rehren 2023) offered narrower carbon estimates (about 1.8 wt%) for several of the recently discovered ingots, with some variation in concentration towards the edge of the samples. As a collaborative effort to determine absolute carbon values and potential uneven distribution of the carbon in the Telangana ingots, traditional metallography was coupled with laser-induced breakdown spectroscopy (LIBS). Beyond documenting the microstructure across several ingots, the study provides macrostructural evidence of rim decarburisation, which we believe to be intentional. This study presents the micro- and macrostructure of two of the hypereutectoid Telangana ingots, highlighting the skill of the craftsmen in decarburising the outer surfaces of their ingots, potentially for ease of subsequent forging.</div></div>","PeriodicalId":100038,"journal":{"name":"Advances in Archaeomaterials","volume":"4 ","pages":"Article 100042"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143293686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Review of the History of Research in Lost-Wax Casting in Bronze Age China Over the Past Century","authors":"Yang Huan, Du Jingnan","doi":"10.1016/j.aia.2023.06.002","DOIUrl":"10.1016/j.aia.2023.06.002","url":null,"abstract":"<div><p>This study analyzes in detail the last century of scholarly study, in China and internationally, into China's Bronze Age lost-wax casting techniques. It finds that research beginning in the early twentieth century has differentiated five lost-wax casting research periods, linked to different research methods and new archaeological discoveries of bronzes and casting relics. The methods that can be identified with a particular research period are: complete lost-wax (before 1931); semi lost-wax (1931–1959); complete piece-mold (1960–1977); both casting technologies (1978–2018); hollowed lost-wax (after 2019). Research shows that piece-mold casting was the dominant casting technology in the territories of the Shang and Zhou dynasty (before 221 BC) kings, but craftspeople used lost-wax casting skillfully at the latest in the Qin dynasty (before 210 BC). Lost-wax artifacts influenced by other cultures are occasionally seen in the border areas of the Shang and Zhou kingdoms. Research on organic constituents in the clay cores of hollowed lost-wax artifacts may provide a definite answer to this question.</p></div>","PeriodicalId":100038,"journal":{"name":"Advances in Archaeomaterials","volume":"3 2","pages":"Pages 47-55"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667136023000079/pdfft?md5=b96e8204c5c4ec167ecd9026f91093e2&pid=1-s2.0-S2667136023000079-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81695194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}