Abstract
We present preliminary results from the first phase of experiments from the Neanderthal Fire Technology Project, aimed at understanding Middle Palaeolithic combustion structures. Our field observations and micromorphological data address the sedimentary expression of various anthropogenic actions (trampling, ash sweeping and dumping, relighting and cooking) performed on simple, flat combustion structures made with Pinus nigra fuel on dry and slightly vegetated calcareous sandy substrates. We observed a characteristic pattern in microstructure and basic composition irrespective of the number and kind of anthropogenic actions performed. Trampling yielded previously documented diagnostic micromorphological features, more pronounced in cases of ash sweeping and dumping. Relighting of fires was only identified in cases with deposits between combustion events. Only rare microscopic calcined bone fragments and fat-derived char were identified in fires involving cooking or tossing of meat in the fire. These data suggest that: anthropogenic actions on simple combustion structures are highly undetectable; sweeping has a stronger effect than trampling on the substrate of the combustion structure; stacked hearths might involve significant amounts of time or deposits between combustion events; and alternative techniques must be sought to identify cooking in fires.
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