1600 BC: Fårdrup and Valsømagle-Type Axes and the First Evidence of Southern Alpine Metal

This article presents the results of a comprehensive investigation of Fårdrup and Valsømagle-type shafthole axes from Denmark and southern Sweden. The combination of artefact style and typology with trace element and lead isotope data in the analysis has provided new insights into the chronological relationship between these two axe types. This way, we open a new window to long-standing debates surrounding these artefact types. Did Fårdrup and Valsømagle type axes evolve parallel, or did they replace each other chronologically in evolutionary progression? The archaeometallurgical dataset presented in this article includes more than 70 axes. Four axes have been analysed for this article. This large set of data is then assessed against a background of metal analyses which trace the long and winding evolution of the use of bronze in Scandinavia c.2300–1400 BC. Combining these two datasets shows the provenance of the metals and, thus, provides insights into metallurgical developments at the onset of the Nordic Bronze Age (NBA, c.1600 BC). In particular, the shafthole axes offer new evidence of the use of a novel type of copper from the East Alpine region based on chalcopyrite ores. The first occurrences of this low-impurity copper in southern Scandinavia appeared around 1700 BC. However, it would eventually become dominant in c.1600 BC, when the local production of shafthole axes began. Significantly, a fraction of the shafthole axes – Fårdrup and Valsømagle-types alike – consist of low impurity copper most likely derived from the Italian Alps (Trentino), which was absent in earlier periods. By NBA II 1500–1300 BC, most metal objects can be related to this northern Italian copper. We interpret this in terms of chronology: Fårdrup (⁓Koszider) and Valsømagle (⁓Tumulus B1) consisted of similar types of copper, which had declined by the onset of NBA II, all indicating that Fårdrup and Valsømagle style objects flourished before the beginning of NBA II (c.1500 BC). The small influx of north Italian copper in the axes indicates that its arrival began before the breakthrough of NBA II. Therefore, while the results of the metal analyses cannot exclude chronological differences between the two shafthole axe types over the 16th century BC, it is probable that their timelines coincided. In summary, our results display correlations between societal developments and thresholds on the one hand and metal provenances and trade routes on the other.