Abstract
ABSTRACT This study explores the reworking of projectile point stems by hunter-gatherers in southeastern South America. Techniques employed to rework stems included pressure and percussion flaking and, eventually, light abrasion of fractured sections, methods that were applied opportunistically to resolve various types of stem fractures. Although the local literature has often overlooked the presence of reworked stems, it appears that point rebasing was a relatively common practice in the region, especially for points made from microcrystalline rocks and other highly silicified rocks. The reworking of points was likely carried out to preserve high-quality raw materials and to reduce the cost of manufacturing new points. Although the recognition of reworked stems can be challenging, it is a crucial task for subsequent morphometric and stylistic analysis. This allows for the identification of one of the sources of point variation thus avoiding an artificial increase in the variability of the original designs.
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