"Variability in Silcrete Heat Treatment at Klein Kliphuis Shelter, Sout" by Patrick Schmidt, Peter Hiscock et al.
Silcrete heat treatment was the earliest known transformative process enhancing the mechanical properties of materials. Its study has implications for our understanding of the cultural evolution of early humans in the Middle Stone Age and southern Africa. Here, we analyze a silcrete assemblage from the South African site Klein Kliphuis. We first investigate the relative prevalence of heat treatment in assemblage and then the position of heat treatment within reduction sequences. We found that ∼60% of all silcrete was heat-treated prior to knapping in one post-Howiesons Poort assemblage and â...