SEM–EDS analysis of western Mediterranean obsidians: a new tool for Neolithic provenance studies |
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Authors: | Franois-Xavier Le Bourdonnec Grard Poupeau Carlo Lugli |
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Institution: | aInstitut de recherche sur les archéomatériaux, UMR 5060, CNRS–université Bordeaux 3, Maison de l'Archéologie, Esplanade des Antilles, 33607 Pessac, France;bDipartimento di Scienze Archeologiche e Storico-Artistiche, Università di Cagliari, Piazza Arsenale, 1-09124 Cagliari, Italy |
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Abstract: | The contents of Na, Al, Si, K, Ca and Fe of 99 obsidians from the western Mediterranean islands of Lipari, Palmarola, Pantelleria and Sardinia were determined with the energy-dispersive spectrometer of a scanning electron microscope (SEM–EDS). The Na and in a lesser way other elements contents characterize any obsidian source-island. In Sardinia (80 samples), the four Monte Arci obsidian geochemical types can be discriminated from binary diagrams of element contents or by a discriminant analysis based on the six elements measured. It is concluded that SEM–EDS offers a new option for Neolithic obsidian provenance studies in this region. To cite this article: F.-X. Le Bourdonnec et al., C. R. Geoscience 338 (2006). |
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Keywords: | Obsidian Western Mediterranean SEM– EDS Provenance studiesMots-clé s: Obsidienne Mé diterrané e occidentale MEB– EDS É tudes de provenance |
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