NEUTRON TOMOGRAPHY AS A VALUABLE TOOL FOR THE NON‐DESTRUCTIVE ANALYSIS OF HISTORICAL BRONZE SCULPTURES

This paper explains, with the example of a Roman object (the ‘Mars from Oberweningen’, Switzerland), why neutrons can be used preferentially for the non‐destructive analysis of metallic objects of relatively large size. This method is superior to the conventional X‐ray tomography method due to the higher penetration ability in metals such as copper, tin and even lead. With this method, differing materials can also easily be differentiated. In this way, the inner and outer structures of objects can be observed with the help of tools based on mathematical algorithms. Slices at arbitrary positions and segmentation of different material clusters aid the understanding of manufacturing processes and can describe the present preservation status. This helps in selecting optimal and additional conservation measures in museums for further preservation. Beside the qualitative overview on structure and inner properties of the objects, quantitative information can be derived about material content and composition. This method and the subsequently needed facilities for this method are available at PSI for similar studies on demand.     

THE WRITING'S IN THE WALL: A REVIEW OF NEW PRELIMINARY APPLICATIONS OF ELECTRICAL RESISTIVITY TOMOGRAPHY WITHIN ARCHAEOLOGY

Natural processes are known to cause significant damage to archaeological monuments. In fact, the key to understanding the decay of building materials is the internal movement of water through the mineral matrix, which influences the distribution of chemical, physical and biological deterioration processes. Electrical resistivity tomography (ERT) was traditionally used as a surveying tool within archaeology, but a new high‐resolution technique that accurately traces the movement of moisture in building materials could provide a vital tool for understanding the decay of many archaeological monuments. This paper considers current progress, the shift of ERT from soil to rock research and the impact that this development could have on future conservation, using Hertford College (Oxford) and Neolithic rock art (Golden Gate Reserve, South Africa) as case studies.     

A HYBRID APPROACH TO CREATE AN ARCHAEOLOGICAL VISUALIZATION SYSTEM FOR A PALAEOLITHIC CAVE

This paper presents a visualization system based on metric data to manage and disseminate archaeological information on the Internet. We describe the integration of two different types of sensors: laser scanning and close‐range photogrammetry. How we created an automatic and hierarchical approach based on processing and matching the images coming from a digital camera and a terrestrial laser scanner is also shown. This development has created a visualization system combining spherical photographs and georeferences for graphical and numerical data acquired by the sensors. The case study where we have applied this method is the Palaeolithic rock art of the Llonín Cave (Asturias, Spain), which has been declared a World Heritage Site by UNESCO and has restricted public access. Our results demonstrate that this tool integrates data, metadata, services and information, which simplifies the location, identification, selection and management of archaeological information.     

The State We're in on the Eve of World Archaeological Congress (WAC) 6: Archaeology in Ireland vs Corporate Takeover and a Reply from University College Dublin

Abstract

There has been a change in how the state in Ireland uses archaeology since the 1990s, when it began collaboration with the private sector on large-scale development. Most archaeologists are now employed by private companies on temporary, short-term contracts. As in other countries, this has happened in tandem with increasing bureaucratic, corporate control of universities and pressure on academics to orient teaching to meet the needs of industry. This is an inevitable expression of expansion by multi-national corporations, often part of the ‘spreading democracy’ which, updating a famous phrase, can be characterised as a US-led ‘war by other means’. I present a case study of that process unfolding in one country, focusing on road development, the corruption upon which it is necessarily founded, and the role of archaeology. The M3 motorway which threatens the landscape of the Hill of Tara provides a good example. Crucial questions of professional ethics and standards, particularly professionals’ accountability to the community, have been sidelined. WAC 6 will be held in University College Dublin in June 2008; this congress will be pivotal because WAC will decide for or against archaeologists’ accountability to communities and their life-or-death struggle for survival, and for or against embedding the profession with cultural destruction in the private sector. A reply from University College Dublin follows this article.     

Imagining the Grand Duchy of Lithuania: The Politics and Economics of the Rebuilding of Trakai Castle and the ‘Palace of Sovereigns’ in Vilnius

Abstract

In 1884 the prominent nation-builder Jonas Basanavi?ius declared that castle mounds and literature were the only appropriate elements from which to build the Lithuanian nation. Basanavi?ius’s view, this article suggests, had a lasting influence on the public uses of history in twentieth-century Lithuania. The study explores the construction of two iconic images of the Grand Duchy of Lithuania, Trakai Castle and the ‘Palace of Sovereigns’ in Vilnius. Built in the fourteenth and fifteenth centuries, Trakai Castle was once the seat of the Grand Duke of Lithuania, but fell into neglect before its reconstruction in the 1960s. Dating back to the thirteenth century, the Palace in Vilnius deteriorated during the eighteenth century, was dismantled at the beginning of the nineteenth, and has been completely rebuilt since 2000. It is striking that the reconstructions of castles were the largest state investments in culture in both the Soviet and post-Soviet regimes. The reconstruction of Trakai Castle was criticized on economic and ideological grounds by Nikita Khrushchev. The rebuilding of the Palace polarized Lithuanian intellectuals. The presentation compares the intellectual, social, and political rationales which underpinned the two projects and explores the changes and continuities in the uses of the Grand Duchy of Lithuania under the Soviet and post-Soviet regimes.     

AN ASSESSMENT OF THE CURRENT APPLICATIONS AND FUTURE DIRECTIONS OF OBSIDIAN SOURCING STUDIES IN ARCHAEOLOGICAL RESEARCH*

This paper thematically characterizes a large body of recent obsidian sourcing discourse as a means of highlighting the current place of obsidian provenance studies in larger archaeological discourse. It is shown that the field of obsidian sourcing is flourishing, with a clear upward trend in the number of published studies in the past decade. This paper further argues that sourcing is a means to an end, a way to determine where artefacts originate, and thus a means of addressing broader archaeological problems. Through this contextual framework, obsidian sourcing studies—and indeed all provenance studies—are seen as relevant because they transcend the increasingly specialized world of archaeological discourse.     

COPPER ALLOYS FROM THE ‘ENOT SHUNI CEMETERY AND THE ORIGINS OF BRONZE METALLURGY IN THE EB IV – MB II LEVANT

Tin bronze replaced arsenical copper as the preferred alloy in the Levant for reasons that have long been debated. Found almost exclusively in graves, these two types of copper alloys share nearly identical mechanical properties. The Bronze Age cemetery of ‘Enot Shuni has yielded the first metals ever analysed from an uninterrupted stratigraphic sequence in the Levant, spanning the earliest adoption of tin bronze from the Early Bronze Age (EB) IV through the Middle Bronze Age (MB) II (c. 2300–1530 bc ). SEM–EDS analysis of these artefacts, combined with a compositional meta‐database of all previously published EB IV – MB II alloys, reveals diachronic alloy progression as selected by populations of the Levant. It has long been qualitatively understood that bronze became the primary alloy by the MB II. These results verify this trend and quantify human demand, showing that tin importation increased by 103% and arsenic content decreased by 49% throughout these periods. This shift in technological choice is attributed to cultural reorientation from the Egyptian to Mesopotamian sphere of influence, as well as to tin's appreciable fuel efficiency over pure copper and arsenical copper in light of unprecedented timber shortages.     

2010 cultural heritage legal summary

Abstract

The year 2010 was a relatively quiet one for legal developments with respect to archaeological heritage. Some court decisions that were expected this year, such as that concerning foreign sovereign immunity for artifacts on loan from Iran to the Oriental Institute of the University of Chicago, did not materialize, while other disputes remain on appeal, such as that involving the disposition of 500,000 gold and silver coins taken from an early 19th century Spanish shipwreck by Odyssey Marine. One of the most closely watched cases, the trial in Italy of the former J. Paul Getty Museum curator, Marion True, ended inconclusively when time ran out for the prosecution. Nonetheless, recovery and restitution of cultural objects that were brought illegally into the United States continued, as did controversies concerning the bilateral agreements concluded between the United States and other nations, pursuant to the 1983 Convention on Cultural Property Implementation Act, the United States' legislation implementing the 1970 UNESCO Convention on the Means of Prohibiting and Preventing the Illicit Import, Export and Transfer of Ownership of Cultural Property. The following review focuses on legal developments primarily in the United States, as the United States participates in international treaty regimes to protect cultural heritage.     

Legislation as an Instrument in South African Heritage Management: Is It Effective?

Abstract

Heritage management and cultural legislation have always existed in the African continent, even before the days of written laws. However, it is often perceived that it was with the 'taking over' of the continent that civilization and heritage legislation were first implemented. The 'new' legislation did not recognize the indigenous means of management and ignored the fact that heritage sites have existed long prior to the scramble for the continent. The first enacted legislation in South Africa was distinctively biased towards the Bushmen heritage. I argue that this was probably because it was not politically problematic as Bushmen were considered to be a dying nation with a culture going 'extinct'. Having legislation that promoted the heritage of the people you were colonizing might not have been strategically correct. Legislation over the years moved away from the 'Bushmen culture' to protecting colonial heritage sites. Whilst the post-colonial heritage legislation has improved on the previous legislation — as can be shown by its success in courts — there are still areas of concern. I find the whole heritage framework represented by the legislation to still be clearly non-African, with a top-down approach that has not much respect for African culture, especially the values that clash with Eurocentric ones. I conclude that indeed there has been significant progress made with legislation over the years, from 1911 to 1999 when the current legislation was promulgated. However, a lack of proactive measures from within heritage management, as well as external factors, are still a stumbling block to a successful implementation of heritage legislation and as a result heritage is still threatened.