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Theses

La limite de la surface d'origine des objets métalliques archéologiques. Caractérisation, localisation et approche des mécanismes de conservation.

Abstract : The original surface of a metallic archaeological object is its surface at the time of its abandonment. As a result of corrosion during burial, the original surface is found included in a succession of layers of corrosion products. When excavated, the shape of the object is lost, surface details are hidden. Knowledge of the original morphology of an object is indispensable to its identification. Recognition of its shape its dimensions, its decoration demand the location of the limit of the original surface. History of the concept in the publications of conservation and restoration from the end of the 19th century has been carried out. A new definition of the concept of original surface is put forward. A new method to describe heavily corroded objects is based on the division of the corroded material into strata and interfaces. Characteristics of both of them are described. This method leads to the definition of corrosion structures and corrosion types. A method of locating the limit of the original surface is also proposed based on the concept of marker. Markers are characteristics of the strata or their interfaces, which indicate the relative location of the limit of the original surface. Markers are divided into 3 groups : inferior and superior markers and marker corresponding to the limit. This method has been used in the case of the copper scroll of Qumrân. The validity of a few markers is discussed on the basis of the present knowledge of the corrosion mechanisms.
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https://tel.archives-ouvertes.fr/tel-00331190
Contributor : Régis Bertholon <>
Submitted on : Wednesday, October 15, 2008 - 4:03:28 PM
Last modification on : Friday, October 23, 2020 - 4:38:53 PM
Long-term archiving on: : Monday, June 7, 2010 - 8:10:47 PM

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  • HAL Id : tel-00331190, version 1

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Régis Bertholon. La limite de la surface d'origine des objets métalliques archéologiques. Caractérisation, localisation et approche des mécanismes de conservation.. Sciences de l'Homme et Société. Université Panthéon-Sorbonne - Paris I, 2000. Français. ⟨tel-00331190⟩

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