Experimental evaluation of Kuhn's geometric index of reduction and the flat-flake problem |
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| Institution: | 1. Ditsong National Museum of Natural History (former Transvaal Museum), 432 Paul Kruger Str., Pretoria 0001, South Africa;2. Evolutionary Studies Institute, University of the Witwatersrand, Private Bag 3, WITS, 2050 Johannesburg, South Africa;3. CNRS UMR 5608 TRACES, Université de Toulouse Jean Jaurès, Maison de la Recherche, 5 allées A. Machado, 31058 Toulouse Cedex 9, France;4. AHKR Institute, University of Bergen, N-5020 Bergen, Norway;5. INRAP GSO, Centre de recherches archéologiques LGV SEA, 57 avenue Maryse Bastié – ZI n°3, 16340 L''Isle d''Espagnac, France;6. CNRS UMR 5199 PACEA, Université de Bordeaux, Bâtiment B8, Allée Geoffroy Saint Hilaire, CS 50023, 33615 PESSAC Cedex, France;7. UNIARQ, Centro de Arqueologia da Universidade de Lisboa, Alameda da Universidade, 1600-214 Lisboa, Portugal |
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| Abstract: | This paper presents the results of an experiment designed to explore the performance of Kuhn's Geometric Index of Unifacial Reduction S. Kuhn, A geometric index of reduction for unifacial stone tools, Journal of Archaeological Science 17 (1990) 585—593] in measuring the amount of material removed over a sequence of retouching events for a population of 30 flakes. The index provides a reliable absolute measure of reduction under experimental conditions, and does so irrespective of blank cross-section, suggesting that the “flat-flake” problem is not necessarily a serious difficulty for the index. Furthermore, Kuhn's Index provided a more sensitive and robust measurement of the extent of reduction than any of the alternative techniques proposed in recent years. |
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