In my master thesis I investigated the potential of stable iron isotopes for archaeometallurgical research under the supervision of Sabine Klein (DBM, Bochum, Germany) and Horst Marschall (Institute for Geosciences, Goethe Universität, Frankfurt, Germany). The discriminatory power of iron isotopes was tested by analyses several bog iron ore specimen from a deposit in Western Germany and comparing these values with values reported in the literature. Additionally, it was tested if iron and oxygen isotopes fractionate during the corrosion of iron objects.
We were able to show that iron isotopes have a very low dicriminatory power for the reconstruction of the ore provenance. Our data and alsod data reported in the literature widely overlap. Moreover, literatur data from one vein deposit covered a larger range than all other data from iron ore combined. Hence it was conluded that iron isotopes can only be used in combination with other methods like trace elements. Concerning iron corrosion it was shown that iron isotopes do not fractionate if bulk samples are analysed. This means that samples for iron isotope analysis could be taken from the corrosion crust and hence no fresh metal must be exposed for sampling, probably facilitating access to archaeological objects.
Publications
- Rose T, Télouk P, Marschall HR, Klein S (2018) Die Bedeutung von Raseneisenerzen für die Herkunftsrekonstruktion mittels Eisenisotopen. In: Glaser L (ed) Archäometrie & Denkmalpflege 2018. Verlag Deutsches Elektronen-Synchrotron, Hamburg, pp 114–117.
- Rose T, Télouk P, Klein S, Marschall HR (2019) Questioning Fe isotopes as a provenance tool: Insights from bog iron ores and alternative applications in archeometry. J. Archaeol. Sci. 101:52–62. https://doi.org/10.1016/j.jas.2018.11.005
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- Rose T, Télouk P, Fiebig J, Marschall HR, Klein S (2020) Iron and oxygen isotope systematics during corrosion of iron objects: A first approach. Archaeol Anthropol Sci 12:133. https://doi.org/10.1007/s12520-020-01072-8
Presentations
- Rose T, Télouk P, Marschall HR, Klein S (2018) Die Bedeutung von Raseneisenerzen für die Herkunftsrekonstruktion mittels Eisenisotopen. Archäometrie und Denkmalpflege, Hamburg.
- Rose T, Télouk P, Marschall HR, Klein S (2018) Provenancing iron artefacts with iron isotopes: New insights from bog iron ores. 24th Annual Meeting of the European Association of the Archaeologists (EAA), Barcelona.