Pollen analysis of neolithic adhesives and comparative experimental archaeology: Insights from La Marmotta (Lake Bracciano, Rome)

This article presents a palynological study conducted on adhesive materials obtained from both experimental and archaeological wooden sickles. The archaeological sickles, dating back to the Early Neolithic period, were recovered from the waterlogged site of La Marmotta, located near Lake Bracciano in Rome, Italy. Experimental harvesting was carried out on cereal crops using sickles purposefully made with a modern resinous material that closely replicates the original composition. This approach allowed us to retrieve palynological information consistent with and comparable to that observed on ancient tools. The study's results highlighted the excellent adhesiveness of these materials, capable of trapping and preserving micro-remains collected during harvesting practices. The discovery of Hordeum-type and Avena-Triticum-type pollen grains confirmed the predominant use of these agricultural tools for cereal harvesting. Notably, one particular neolithic sickle, whose resin primarily retained Oenanthe-type pollen, stands out for its exclusive use in cutting herbaceous plants of potential medicinal interest. In parallel, the analysis of pollen content retained in modern cereal spikes confirmed their potential to provide information about the type of crop and, to some extent, the floristic component of the surrounding environment.