J Archaeol Sci 27 (10)

Differences between tools' original and discarded sizes bear on classification, curation and other interpretative issues in Palaeolithic archaeology. Recent experiments demonstrated significant relationships between platform size and original flake size but also generated controversy about the relative importance of empirical and theoretical platform variables in determining flake size. Depending on the nature and strength of the relationships, original size might be calculated from platform variables, often retained in discarded tools. The platform-flake relationship in Pelcin's controlled data and two replicated assemblages are examined. As Pelcin suggested, theoretical platform variables predict flake size only with stringent assumptions. Empirically, log-size regresses consistently upon log-platform size in hard-hammer but not in soft-hammer flakes. A universal relationship between variables exists in the assemblages, but only in hard-hammer flakes which in any case, were more likely to be used as tools. See also 96/103, 99/147, 99/148 and 99/154

A paper reporting the use of GPR to survey an area of archaeologically important karst topography at Kitley Caves in Devon. The use of GPR to detect voids within limestone outcrop as an aid to locating cave systems which might contain sediments suitable for excavation is described. The performance of GPR equipment is analysed and the results compared to those obtained with an electrical resistance survey carried out at the same location. In particular, the depth of penetration of the GPR is estimated, and discernible echo signals from a much greater depth than is usually reported in archaeological applications of GPR are reported.