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Chemical characterization reveals intra‐source variation in obsidian from the Paredón source area in Puebla and Hidalgo, Mexico. Two chemical sub‐sources of obsidian from Paredón are spatially discrete and cannot be distinguished by visual characteristics. To facilitate future investigations of the prehistoric exploitation of these sub‐sources, an inter‐laboratory comparison of elemental concentrations...
The measured chemical composition of archaeological ceramics can result from a variety of geological, cultural and taphonomic factors. In the present study, we evaluate the likelihood that elevated barium concentrations in ceramics from the archaeological site of Wom/Aiser, located on the northern coast of Papua New Guinea, result from post‐depositional enrichment. Using time‐of‐flight–laser ablation–inductively...
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