The prehistoric settlement on the Kiechlberg hilltop is located a few kilometres to the northeast of Innsbruck, in the Tyrolean Inn Valley. Despite its rather isolated location, a multiphase settlement between the fifth and the second millennium BC was confirmed by archaeological investigations in 2007 and 2008. Metallurgical artefacts, such as copper ore fragments, copper slag and raw copper, as well as finished copper and bronze artefacts, are concentrated mainly in Late Copper Age to Middle Bronze Age layers. The chemical compositions of the slag and raw metals confirm Fe-Zn tetrahedrite-tennantite (fahlore) smelting. The ore was most probably imported from the 30-50 km distant copper ore deposits (mainly fahlore) of Schwaz-Brixlegg, in the Lower Inn Valley. The small amount of slag and the presence of slagged and thermally altered ceramic fragments suggest copper production in small-scale workshops. Most probably, sulphide-rich ores were smelted in crucibles in a hearth fire. The process was relatively reducing below the 2Sb + 1.5O 2 → Sb 2 O 3 reaction (-8.5 log fO 2 at 1100°C), producing Sb-rich (>10 wt% Sb in metal) raw copper. Inhomogeneous slag remains containing high amounts of sulphide and metal inclusions suggest a poor separation of the metal, matte (copper sulphide) and silicate/oxide melt during the smelting process.
The exploitation of copper deposits in the mountainous areas of the Alps gained enormous economic importance particularly in the 2nd and 1st millennium B.C., as Alpine copper began to play a central role in the metal supply of Europe. This volume summarises the current state of research on prehistoric Alpine copper exploitation from the western and southern Alps to the gates of Vienna in the eastern Alps. The 23 papers were originally presented as contributions to a conference held in September 2016 at the University of Innsbruck, which covered topics such as mountain landscapes, mining, beneficiation, smelting and the metal trade in the Bronze and Early Iron Ages. A particular focus of the present volume is the D-A-CH-funded project on ‘Prehistoric copper production in the Eastern and Central Alps: technical, social and economic dynamics in space and time’, a research collaboration between partners in Germany, Austria and Switzerland. The various contributions provide new perspectives on the questions surrounding fahlore and the different technological processes within the framework of a broader ‘chaîne opératoire’. Even with the current stage of research, it is already possible to sketch how different Alpine regions adapted more general technological and economic trends surrounding copper exploitation in very different ways.
Zusammenfassung: Im traditionsreichen Bergbaugebiet von Schwaz/Brixlegg im Nordtiroler Unterinntal fand während der späten Bronzezeit und frühen Eisenzeit ein umfangreicher Bergbau auf Kupfererze statt, der zahlreiche Spuren im Gelände hinterlassen hat. Montanarchäologische Forschungsprojekte der Universität Innsbruck, gefördert vom österreichischen Wissenschaftsfonds FWF und vom Tiroler Wissenschaftsfonds TWF, untersuchen seit den 1990er Jahren das prähistorische Montanwesen in diesem Raum. Zu den Forschungszielen gehören die Rekonstruktion der metallurgischen Produktionskette vom Erzabbau über die Aufbereitung bis hin zur Erzverhüttung und Gewinnung von Rohkupfer sowie der Arbeits- und Lebenswelt der prähistorischen Berg- und Hüttenleute. Die bislang prospektierten und in Ausschnitten archäologisch untersuchten Befunde belegen einen zeitlichen Schwerpunkt der Bergbauaktivitäten im 12. bis 8. Jh. v. Chr. Auf einem Verhüttungsplatz bei Radfeld (Mauk A) fanden sich 1997 bei der Freilegung einer „Waschrinne“ zur nassmechanischen Aufbereitung von Schlacken einige gut erhaltene Textilfragmente. Der archäologische Befund sowie die Textilfunde, Analysen zu Textiltechnik, Fasermaterial und Farbstoffen werden im folgenden Beitrag vorgestellt. Zudem werden die funktionelle Interpretation und kulturgeschichtliche Einordnung der Textilfunde diskutiert.
A unique archaeological finding of five individuals buried in an early medieval pit house was discovered in Podersdorf am See (Austria). Three of those individuals were buried in narrow grave pits that had been deepened into the house floor; two of them were lying on the pit floor in a crouched position. Pit houses with six-post construction are known since Roman times and were particularly widespread during the Migration Period. On the basis of radiocarbon analyses of charcoal from the hearth, the use phase of the pit house of Podersdorf am See can be dated to the sixth century AD. The burials took place around the same time in the second half of the seventh century AD, when the house lost its original function. Around that time, regular burials took place in the cemetery in the immediate vicinity of the house. The anthropological examination of the five skeletons showed no significant differences in comparison to the ones that were buried in the cemetery. By means of aDNA analyses, it could be established that at least two of the individuals were closely related to each other.
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