Etude des matières picturales du Codex Borbonicus - Apport des spectroscopies non-invasives à la codicologie

Abstract : The Codex Borbonicus is a great source of knowledge regarding different aspects of the culture of the basin of Mexico-Tenochtitlan at the time of the Spanish conquest. For some historians, the manuscript is definitely Precolumbian while for others, parts of its graphical contents reveal a European cultural influence. In order to investigate the technological knowledge that was involved for its creation, and to bring fresh data to the debate, the manuscript material constituents are studied with transportable, non-invasive analytical techniques (X-Ray fluorescence, reflexion, emission and Raman spectroscopies). A first interpretation of the analytical data recorded on the document is based on the historical records and the corpus of Mesoamerican manuscripts that have already been studied. A finer analysis of the data is done through the calculation of spectral combinations as well as the experimental studies of certain coloring materials, that allow a better understanding of the paint preparation techniques. In order to generalize the conclusion based on localized analyses, the spatial distribution of the constituent on the whole document is also explored. Hyperspectral imaging, with the aid of statistical tools and the mapping of specific spectral features, brings new insights to the first results. The exclusive use of organic colorants extracted from animal (Dactylopius coccus) or vegetable sources (Indigofera suffruticosa, Comellina coelestis, Justicia spicigera) in the Codex Borbonicus, alone or in mixtures, fits what is known of Precolumbian traditions. Therefore, the hypothesis of a European influence can’t be supported by the nature of the manuscript constituents. Moreover, these new data enrich the current knowledge on Mesoamerican manuscript production techniques.
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Submitted on : Friday, March 24, 2017 - 2:39:31 PM
Last modification on : Friday, September 14, 2018 - 9:56:10 AM
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  • HAL Id : tel-01493553, version 1

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Fabien Pottier. Etude des matières picturales du Codex Borbonicus - Apport des spectroscopies non-invasives à la codicologie. Chimie analytique. Université de Cergy Pontoise (UCP), 2017. Français. ⟨tel-01493553⟩

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