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.
|Titolo:||SEM-EDS analysis of western Mediterranean obsidians: a new tool for Neolithic provenance studies|
|Data di pubblicazione:||2006|
|Tipologia:||1.1 Articolo in rivista|