Poulnabrone is a classic example of a portal tomb with two tall portal stones flanking the entrance to a rectangular stone-lined chamber which is covered by a single large capstone.
Archaeological excavations, carried out between 1986 and 1988, revealed that at least 33 individuals were buried in the chamber. (~4200-2900 BC)
Thin-sections • a 30μm slice of a ceramic. A common lab prep technique to examine a rock, mineral, soil, pottery, bones and sometimes metal. The method uses the Michel-Lévy interference colour chart to define and observe minerals and/other inclusions.
Ancient lipids • best preserved biomolecules and are used as archaeological biomarkers. Through various extraction protocols, we can isolate and identify animal fats, plant waxes, resins, vegetable oils, bitumen, etc. #ArchaeologicalScience#PhDLife
Ceramics and other materials must be impregnated by resin in order to obtain a flat surface. Samples are prepared to be examined by a scanning electron microscope or other such techniques. Archaeologists follow similar protocols from other disciplines (i.e geosciences/material science/etc). Polishing is the last step of sample prep. It takes time, but the sample transforms into a tangible material that can be stored in a lab and analyzed by future researchers. The most satisfying bit: analyzing this particular artefact that was constructed by someone 6000 years ago. #ArchaeologicalScience