Apport des analyses chimiques multi technique à la compréhension du comportement des éléments traces dans les filières sidérurgiques anciennes. Application aux études de provenance et à la distinction des procédés. Le cas du Pays de Bray normand.

Abstract : In this work, we developped a new methodology based on major and trace element analyses of slag inclusions to determine (or exclude) the provenance of iron artefacts. It is applied to verify if the Pays de Bray, a French area between Rouen and Beauvais, could have been an important supplier for the ferrous reinforcements used in the Middle Ages for the building of churches and cathedrals in these two towns. To this purpose, the behaviour of trace elements during both direct and indirect operating chains is studied combining experimental smelting and different analytical methods, such as SEM–EDS, ICP–MS, LA–ICP–MS and INAA, performed on archaeological samples. The chemical signature of the Pays de Bray iron ore and slag is determined considering MnO and P2O5 contents as a first rough filter and seven couples of trace elements. Then, the major and trace elements are analysed using the same methods in the slag inclusions of 32 artefacts from the Beauvais and Rouen churches, made by the bloomery process. The trace element signature of the inclusions from each artefact is compared with the ore from the Pays de Bray area. The iron used in the Rouen and Beauvais churches seems not to come mainly from the Pays de Bray.
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https://tel.archives-ouvertes.fr/tel-00552060
Contributor : Anne-Marie Desaulty <>
Submitted on : Wednesday, January 5, 2011 - 12:45:37 PM
Last modification on : Thursday, February 1, 2018 - 1:38:04 AM
Long-term archiving on: Saturday, December 3, 2016 - 3:55:07 AM

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Anne-Marie Desaulty. Apport des analyses chimiques multi technique à la compréhension du comportement des éléments traces dans les filières sidérurgiques anciennes. Application aux études de provenance et à la distinction des procédés. Le cas du Pays de Bray normand.. Sciences de l'Homme et Société. Université de Technologie de Belfort-Montbeliard; Université de Besançon, 2008. Français. ⟨tel-00552060⟩

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