“…The Scheldt basin in NW Belgium has been chosen as a study area because of its rich and varied prehistoric heritage (Crombé, 2005a(Crombé, , 2005bCrombé & Robinson, 2017;Crombé et al, 2014;Crombé, Sergant, Robinson, & De Reu, 2011 soil acidity, most of these sites yielded only stone artifacts, some of them heavily weathered by the formation of a patina, frost, and/or burning. These weathered artifacts have so far been mostly excluded from the use-wear studies performed at some of these sites, based on the assumption that weathering affected these traces in such a way that they are not or only partially preserved (Beugnier & Crombé, 2005Gueret, 2013;Tomasso, Rots, Perdaen, Crombez, & Meylemans, 2015).…”