کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1034841 1377869 2016 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Looking at handaxes from another angle: Assessing the ergonomic and functional importance of edge form in Acheulean bifaces
ترجمه فارسی عنوان
با نگاهی به تبر سنگی از زاویه دیگر: بررسی اهمیت ارگونومیک و کاربردی از فرم لبه در دوتراشه آشولی
کلمات کلیدی
بهره وری برش؛ استفاده دوتراشه ؛ آشولی؛ سنگ مورفولوژی ابزار؛ طرح وظیفه مندی
موضوعات مرتبط
علوم انسانی و اجتماعی علوم انسانی و هنر تاریخ
چکیده انگلیسی


• Large-scale experiment assesses impact of handaxe edge angles on cutting efficiency.
• More obtuse edge angles can increase effectiveness.
• Angles beyond a threshold of ∼70 degrees, however, showed reduced effectiveness.
• Angles in the proximal portion of handaxes have greatest influence on efficiency.
• Edge angles in archaeological handaxes suggest these reflect ergonomic principles.

Edge angle is widely considered to be a morphological attribute that influences the functional performance of lithic technologies. However, the comparative performance capabilities of handaxes that vary in terms of edge angles has never been investigated under experimental conditions. Similarly, detailed accounts of Acheulean handaxe angle variation from archaeological examples have not been reported in the literature. Consequently, it has not previously been possible to assess the extent to which Palaeolithic individuals adhered to specific edge angle ranges during handaxe production or whether resultant artifactual properties may have been in response to varying rates of utility. Here, using a substantial experimental program (n = 500 handaxes), we investigate the impact that edge angle variation has on the cutting efficiency of handaxes at a “whole tool” and “edge-point localized” level. We then examine edge angles in a temporally and geographically wide range of handaxes (n = 643) and assess the extent to which hominins were likely altering tool production choices in response to functional pressures. Our experimental results demonstrate that, up to a certain value, higher edge angles in handaxes can actually increase functional performance. Furthermore, results indicate that edges in the proximal portion of handaxes have the greatest influence over efficiency rates. Combined with examination of archaeological specimens, these results suggest that hominins actively pursued the production of more obtuse edges in the proximal (butt) portion of handaxes in order to increase ergonomic features that facilitated greater efficiency during use. Edge angle values in the proximal portion of the archaeological handaxes were, however, consistently found to be below an efficiency threshold identified at ∼70 degrees, above which, an edge’s ability to effectively be applied to cutting tasks decreases markedly. This further suggests that the proximal edges of handaxes, at least occasionally, were required as a functional working edge.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Anthropological Archaeology - Volume 44, Part A, December 2016, Pages 43–55
نویسندگان
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