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In archaeological literature, the site of Trnjane, near Bor in eastern Serbia is known as an urn necropolis, with 43 discovered urn graves. The excavations in Trnjane took place between 1985 and 1987-1989, and continued in 1998. The investigations also included an excavation of a nearby settlement, but the results of this research were never published. In most of the previous studies, Trnjane was assigned to the Middle and Late Bronze Age, while the necropolis was often connected with the spread of the Urnfield Phenomena from Central Europe toward the Balkans. New investigations started in 2017 as cooperation between the Archaeological Institute in Belgrade and the Institute for Oriental and European Archaeology (OREA) of the Austrian Academy of Sciences shed new light on the chronology and cultural assignment of Trnjane and other similar surrounding sites in the region of eastern Serbia. The excavation of the settlement area in 2017 and 2018 yielded numerous finds indicating metallurgical activities connected with copper ore smelting (slag and ores), while pottery finds showed a typological resemblance with an Early and Middle Bronze Age repertoire. The radiocarbon dates from the settlement area and from urn graves of the neighbouring necropolis also point to a much earlier time than previously assumed. The new chronological determination of Trnjane raises a set of new questions, especially regarding the cultural connections between central Europe and the Balkans and transfers of copper ore smelting technology in the Bronze Age.

This paper discusses the first results of the archaeometallurgical investigation conducted in cooperation between the institutes OREA (Institute for Oriental and European Archaeology, Austrian Academy of Sciences) and VIAS (Vienna Institute for Archaeological Science, University Vienna) and the regional museums in Doboj and Travnik (Bosnia-Herzegovina). The 76 sampled artefacts are dated between the 13 th and 9 th centuries BC (Ha A1-Ha B3). The spectrum of finds includes forms of supra-regional, regional and local distribution, originating from different contexts (settlements, graves and hoards). After the first analysis of 91 samples (metals and ores) using a scanning electron microscope (SEM-EDS) at the VIAS, a group of 30 archaeologically and metallurgically significant samples was additionally examined by ED-XRF analysis to determine the trace element concentration of each single artefact. The focus of this research is to determine whether the increase of copper based metal artefacts during the Late Bronze Age was stimulated by the use of local copper ore resources -since they were accessible during this time period -or if a long-range, European distribution network was used to cover the need for raw material. Furthermore, it should be examined whether locally distributed bronzes can be distinguished from supra-regional types, by not only typological differences but also regarding their metallurgical composition. KeywordsBosnia, bronze artefacts, exchange networks, metal trade, archaeometallurgical analyses, Late Bronze Age, Hallstatt period. Zusammenfassung

In this paper we present the first results of an interdisciplinary research project focused on Late Bronze Age metallurgy in the western and central Balkans. The comprehensive chemical and lead isotope analysis, and a strict consideration of archaeological criteria, has provided a deeper insight into supra regional metal exchange networks between the 14th and 9th century BC in this part of Europe. Particularly interesting and surprising are results regarding the provenance of raw materials for copper production, which have a chemical composition and lead isotope ratios that closely correspond to ore deposits in the southern Alps (North Italy). Based on the examination of 57 objects of different functions, chronology and distribution, it becomes apparent that copper from the southern Alps was almost an omnipresent raw material in the territories of the western and central Balkans with only a few finds from North Macedonia to indicate alternative sources. The analyses demonstrate that the reuse of fahlore-based copper is attested for the first time in the regions under study. The remarkable fact that other archaeological parameters do not indicate such an intensive connection between the Balkan area and Northern Italy raises a number of questions. The sustained and long-lasting networks of raw material procurement stand in contrast to the expected cultural interaction between metal producing and metal consuming prehistoric societies. The results of this work also highlight the currently underestimated role of the southern Alps as one of the main copper producing areas in Bronze Age Europe, and demonstrate for the first time that the region of western and central Balkans was one of the major recipients.

Archaeological research is currently redefining how large-scale changes occurred in prehistoric times. In addition to the long-standing theoretical dichotomy between ‘cultural transmission’ and ‘demic diffusion’, many alternative models borrowed from sociology can be used to explain the spread of innovations. The emergence of urnfields in Middle and Late Bronze Age Europe is certainly one of these large-scale phenomena; its wide distribution has been traditionally emphasized by the use of the general term Urnenfelderkultur/zeit (starting around 1300 BC). Thanks to new evidence, we are now able to draw a more comprehensive picture, which shows a variety of regional responses to the introduction of the new funerary custom. The earliest ‘urnfields’ can be identified in central Hungary, among the tell communities of the late Nagyrév/Vatya Culture, around 2000 BC. From the nineteenth century BC onwards, the urnfield model is documented among communities in northeastern Serbia, south of the Iron Gates. During the subsequent collapse of the tell system, around 1500 BC, the urnfield model spread into some of the neighbouring regions. The adoption, however, appears more radical in the southern Po plain, as well as in the Sava/Drava/Lower Tisza plains, while in Lower Austria, Transdanubia and in the northern Po plain it seems more gradual and appears to have been subject to processes of syncretism/hybridization with traditional rites. Other areas seem to reject the novelty, at least until the latest phases of the Bronze Age. We argue that a possible explanation for these varied responses relates to the degree of interconnectedness and homophily among communities in the previous phases.