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  • Title: Spectroscopic-assisted archaeometric studies to determine the production technology of the VI BC Zeus Enthroned statue (Paestum, Italy) and Pre-Roman technology transfer.
    Author: Veneranda M, Costantini I, Prieto-Taboada N, Larrañaga A, Castro K, Arana G, Averna A, Rescigno C, Madariaga JM.
    Journal: Spectrochim Acta A Mol Biomol Spectrosc; 2021 Mar 15; 249():119294. PubMed ID: 33360059.
    Abstract:
    This work summarizes the spectroscopic-assisted archaeometric study of the most important terracotta statue of Poseidonia-Paestum (Italy), the so-called Zeus Enthroned (VI sec. BC). The selected analytical strategy combines the mineralogical and molecular information provided by X-Ray diffraction (XRD) and Raman analysis with the elemental data obtained from X-Ray fluorescence (XRF) and Scanning Electron Microscopy coupled to Energy Dispersive Spectrometry (SEM/EDS). To shed light on the raw materials used to create and decorate this unique artwork, the analytical results gathered in this study helped disclosing the applied production technology. As suggested by the detected mineral assemblages, the body was prepared in two steps, using calcareous clay (CC) rich in Mg- and Fe- minerals as raw materials. The inner core and the outer depurated layers were both fired in oxidizing conditions but reaching different temperatures (≥900 °C and 850-900 °C respectively). The statue was decorated by firing manganese- (jacobsite MnFe2O4) and iron- (hematite Fe2O3) oxides in oxidizing conditions. Knowing that the decoration techniques based on the use of Mn-oxides were mastered by Etruscans rather than by Ancient Greeks, the obtained results suggest a transfer of production technology across borders, thus providing an additional clue about the flourishing commercial and cultural exchanges occurred between Greek colonies and Italic pre-Roman societies.
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