Milky Quartz Bipolar Reduction and Lithic Miniaturization: Experimental Results and Archaeological Implications
Milky Quartz Bipolar Reduction and Lithic Miniaturization: Experimental Results and Archaeological Implications
复制标题
乳石英双极还原和石器小型化：实验结果和考古意义
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
P. de la Peña
中科院分区：
文献类型：
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作者：
J. Pargeter;P. de la Peña
摘要我们提供的实验数据检查的能量学和识别的轴向双极还原的背景下，岩屑小型化的乳白色石英。这些实验回答了两个具体问题。首先，双极复位是否比徒手复位有任何好处？第二，轴向双极复位和徒手复位能区分吗？我们的数据表明，与徒手还原相比，双极还原需要显着更少的时间来减少核心质量的百分比单位并在乳白色石英上产生一毫米的切割边缘。乳白色石英双极还原甚至超过黑曜石压力刀片的尖端生产效率。我们概述了一系列的定量标准，用于识别双极核心和薄片。我们的研究结果表明，双极的核心和薄片可以区分使用徒手还原通过量化平台破碎，远端薄片反弹疤痕，灯泡剪切，以及轴向，双极，和分裂的薄片终端。我们的研究结果挑战了广泛持有的看法浪费双极还原，并提供明确的指导方针，确定这种减少战略，在考古乳白色石英组合。
ABSTRACT We present experimental data examining the energetics and identification of axial bipolar reduction in contexts of lithic miniaturization on milky quartz. These experiments answer two specific questions. First, does bipolar reduction provide any benefits over freehand reduction? Second, can axial bipolar reduction be distinguished from freehand reduction? Our data show that bipolar reduction requires significantly less time to reduce a percentage unit of core mass and to produce a millimeter of cutting edge on milky quartz than freehand reduction. Milky quartz bipolar reduction surpasses even the cutting edge production efficiency of obsidian pressure blades. We outline a series of quantitative criteria for identifying bipolar cores and flakes. Our results show that bipolar cores and flakes can be distinguished from those produced using freehand reduction by quantifying platform crushing, distal flake rebound scars, bulb shearing, as well as axial, bipolar, and splintered flake terminations. Our results challenge the widely held perceptions about the wastefulness of bipolar reduction and provide clear guidelines for identifying this reduction strategy in archaeological milky quartz assemblages.