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Dents in our confidence: The interaction of damage and material properties in interpreting use-wear on copper-alloy weaponry

Artikel i vetenskaplig tidskrift
Författare Christian Horn
I. C.C. von Holstein
Publicerad i Journal of Archaeological Science
Volym 81
Sidor 90-100
ISSN 0305-4403
Publiceringsår 2017
Publicerad vid
Sidor 90-100
Språk en
Länkar dx.doi.org/10.1016/j.jas.2017.04.00...
Ämnesord Copper, Corrosion, Damage formation, Fracture, Patina, Repair, Weaponry, Wear analysis
Ämneskategorier Arkeologi

Sammanfattning

© 2017 Elsevier Ltd The presence or absence of use-wear marks on copper (Cu)-alloy weaponry has been used since the late 1990s to investigate the balance between functional (combat) and symbolic (value, status, religious) use of these objects, and thus explore their social and economic context. In this paper, we suggest tha t this work has not taken sufficient account of the material properties of Cu-alloys. We discuss mechanisms of plastic deformation, incremental repairs and corrosion in detail to show how these can obscure use-wear traces. In a survey of Cu-alloy weaponry from the Nordic Bronze Age (1800/1700–550 BCE) from Denmark, Sweden and Germany, we show that corrosion of Cu-alloy objects is strongly linked to depositional context, being greater in burials (both inhumations and cremations) than hoards or as single objects. A relative paucity of use-wear marks on burial weapons should therefore not be used to argue that these were purely symbolic objects, e.g. in contrast to the better preserved hoard material. We propose that use-wear traces on Cu-alloy weaponry, particularly on blade edges, is significantly more elusive than previously realised, and that undamaged objects have been over-identified.

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