Roymans (Nico)
- s. xx–xxi
- (agents)
In the past two decades, conflict archaeology has become firmly established as a promising field of research, as reflected in publications, symposia, conference sessions and fieldwork projects. It has its origins in the study of battlefields and other conflict-related phenomena in the modern Era, but numerous studies show that this theme, and at least some of its methods, techniques and theories, are also relevant for older historical and even prehistoric periods.
This book presents a series of case-studies on conflict archaeology in ancient Europe, based on the results of both recent fieldwork and a reassessment of older excavations. The chronological framework spans from the Neolithic to Late Antiquity, and the geographical scope from Iberia to Scandinavia.
Along key battlefields such as the Tollense Valley, Baecula, Alesia, Kalkriese and Harzhorn, the volume also incorporates many other sources of evidence that can be directly related to past conflict scenarios, including defensive works, military camps, battle-related ritual deposits, and symbolic representations of violence in iconography and grave goods. The aim is to explore the material evidence for the study of warfare, and to provide new theoretical and methodological insights into the archaeology of mass violence in ancient Europe and beyond.
The composition of 2977 Late Prehistoric glass objects was investigated to derive information on the nature of the colourants used. 2673 Late Iron Age Celtic (La Tène) bracelet fragments from the Netherlands and Austria and 51 Early Iron Age beads from the Netherlands were analysed. Hand-held XRF analyses demonstrated that all glass objects were of the soda-silica-lime type, which has a presumed origin in the Eastern Mediterranean. Copper was used as colourant, in the form of copper filings, in most of the Early Iron Age glass beads to give recycled glass a blue-green colour.
The vast majority (98%) of the translucent Iron Age glass, was coloured using cobalt (blue), manganese (purple; colourless), antimony (colourless) and iron (green). Manganese, however, was added to all glass, contributing additional amounts of elements like copper, cobalt and iron. Opaque decorations were produced using antimony, or a combination of tin and lead.
REE analyses on a selection of representative objects indicate that the manganese ores in translucent glass are of hydrogenetic-diagenetic (Early Iron Age) or hydrothermally influenced diagenetic (Late Iron Age) types. Strontium isotope ratios show mixing between a calcite-related seawater source (0.709) and manganese ores with isotope ratios of ∼0.70766. Lead isotope ratios are dominated by colourant-derived Pb. The isotope ratios of the manganese used to produce translucent glass and lead used for opaque glass decorations fall in the same range. The most likely general provenance of both lies on Lavrion or the Western Cycladic Islands, although an origin in the central Taurus or the Sinai mountains cannot be excluded. The conclusion is that manganese ore used for colourants contributes significantly to the REE concentration in the glass, including Nd, as well as to Sr and Pb. This needs to be taken into account when using concentrations or isotope ratios of these elements for provenancing other raw materials like sand and calcium carbonate. This appears to be the case for all antique soda-lime-silica glass.
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