‘Simple’ surface-fire heat treatment significantly improves silcrete flake quality and flaking efficiency

‘Simple’ surface-fire heat treatment significantly improves silcrete flake quality and flaking efficiency
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“简单”表面火热处理显着提高硅混凝土片状质量和压片效率

DOI:
10.1016/j.jasrep.2020.102203
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发表时间:
2020
期刊:
Journal of Archaeological Science: Reports
影响因子:
--
通讯作者:
Schmidt
Schmidt
中科院分区:
--
文献类型:
--
作者:
Pargeter;Schmidt

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有意的石头热处理是史前行为变异的关键标志。然而,热处理策略的差异和石材工具制造过程的变化之间的关系仍然存在很大的争议和了解甚少。我们报告了两个实验测试木材燃料和加热策略适用于硅结砾岩结核从南非Diepkloof岩石庇护所以南约60公里的早期证据故意硅结砾岩热处理。我们将加热的硅结砾岩结核制成薄片,以最大限度地缩小薄片生产。除了量化木质残留物和热诱导断裂率之外,还在它们的实用性(薄片切割边缘与质量)和切割边缘质量(切割边缘角度)方面比较了所得的芯和薄片。我们的研究结果表明,“简单”的表面火热处理策略提供了显着增加小型化的核心效用和薄片质量比未加热的硅结砾岩结核。其中一些效果是在没有比烹饪和其他实用目的所需的专业知识更专业的知识的情况下获得的。我们的研究结果表明,快速加热硅结砾岩修改岩石的小型化石器生产是有效的,在相对较低的技术投资水平。
Intentional stone heat treatment is a key marker for prehistoric behavioural variability. Yet, the relationship between differences in heat-treatment strategies and variations in stone tool-making processes remains heavily debated and poorly understood. We report on two experiments testing wood fuels and heating strategies applied to silcrete nodules from ~60 km south of Diepkloof Rock shelter in South Africa with early evidence for intentional silcrete heat treatment. We flaked the heated silcrete nodules to maximize miniaturized flake production. The resulting cores and flakes were compared in terms of their utility (flake cutting edge to mass) and cutting edge quality (cutting edge angles) in addition to quantifying woody residues and heat induced fracture rates. Our results show that ‘simpler’ surface-fire heat treatment strategies provide significant increases in miniaturized core utility and flake quality over unheated silcrete nodules. Some of these effects were obtained without more specialized knowledge than is required to maintain fires for cooking and other utilitarian purposes. Our results show that rapidly heating silcrete to modify rocks for miniaturized stone tool production is efficient at relatively low levels of technological investment.
DOI: 10.1371/journal.pone.0204705
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期刊: PloS one
影响因子: 3.7
作者:
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发表时间: 2017
期刊: Lithic Technology
影响因子: 1.7
作者:
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DOI: 10.1016/j.jasrep.2016.08.014
发表时间: 2017
期刊: Journal of Archaeological Science: Reports
影响因子: --
作者:
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DOI: 10.1093/obo/9780199846733-0012
发表时间: 2004
期刊: Radiocarbon
影响因子: 8.3
作者:
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