At Ustica island (Palermo, Italy), in the area of Casa dei Francesi, 119 fragments of obsidian artifacts were collected on the surface of an agricultural field at an altitude of 50 m asl. In the same area, until now, scientific literature reports only the presence of late Roman pottery (4 th –6 th centuries AD), and no evidence has appeared that it could be the site of a prehistoric settlement. The most important prehistoric settlement, the Faraglioni Village (Middle Bronze Age) is located 700 m further north, overlooking the sea. Obsidian provenance analyses, performed on the 119 samples with absolutely non-destructive techniques WD-XRF and SEM-EDS, indicate two sources areas: Lipari (93 samples, 78%) and Pantelleria (26 samples, 22%). Concerning the obsidians from the island of Pantelleria, it was possible to also establish the sub-source of Salto la Vecchia. The typological and functional analyses of the 119 obsidian fragments point out that 115 are debitages, some of which show evidence of percussion bulbs, and only 4 are tools with micro-retouching. This work focuses on the geochemical and typological characterization of the obsidian assemblage collected, the characteristics of which suggest the existence of a prehistoric settlement in the area of the Casa dei Francesi or nearby.

中文翻译：

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Casa dei Francesi（意大利乌斯蒂卡岛）的黑曜石文物的考古学表征和隐藏的史前定居点的线索

在卡萨迪弗朗西西地区的乌斯蒂卡岛（意大利巴勒莫），在海拔50 m的农田表面上收集了119块黑曜石文物。直到现在，在同一地区，科学文献仅报道了晚期罗马陶器的存在（公元4至6世纪），而没有证据表明它可能是史前定居点。史前最重要的定居点，法拉廖尼村（青铜时代中期）位于北面700 m，可以俯瞰大海。用绝对无损技术WD-XRF和SEM-EDS对119个样品进行的黑曜石来源分析表明，有两个来源地区：Lipari（93个样品，占78％）和Pantelleria（26个样品，占22％）。关于潘泰莱里亚岛上的黑曜石，也有可能建立Salto la Vecchia的子资源。对119个黑曜石碎片的类型和功能分析指出，其中115个是借方，其中一些显示了敲击球的迹象，只有4个是微修饰工具。这项工作侧重于收集到的黑曜石组合的地球化学和类型学特征，其特征表明在Casa dei Francesi或附近地区存在史前定居点。