Towards improved identification of obsidian microblade and microblade-like debitage knapping techniques: A case study from the last glacial maximum assemblage of Kawanishi-C in Hokkaido, Northern Japan
Towards improved identification of obsidian microblade and microblade-like debitage knapping techniques: A case study from the last glacial maximum assemblage of Kawanishi-C in Hokkaido, Northern Japan
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DOI：
10.1016/j.quaint.2021.04.003
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发表时间：
2021-04
影响因子：
2.2
通讯作者：
Jun Takakura
中科院分区：
文献类型：
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作者：
Jun Takakura
直到最近，关于微叶片技术在东北亚的起源和传播的几种假设已经提出和讨论。尽管在不同的地理和时间背景下提出了微叶片和叶片的各种定义，但一些研究人员可能同意，微叶片生产的压力扣压技术在海洋同位素阶段（MIS） 3和2之间的岩屑技术和人类行为的重大变化过程中起着至关重要的作用。东北亚地区微叶片技术研究的主要课题之一是建立一种系统可靠的方法来识别经定量验证的微叶片扣合技术。本文试图通过分析断裂翼作为裂纹速度的可靠指标，提出一种更完善的识别微叶片断裂技术的方法。本文重点研究了日本北海道川西c末次盛冰期（LGM）组合中黑曜石微叶片状碎屑断裂技术。裂缝翼分析结果表明，Kashiwadai-C遗址的微叶片状纵向碎屑的产生是由冲击技术而不是压力技术造成的。这对北海道LGM微叶片和微叶片样碎屑还原序列的多样性以及岩屑技术重大变化的复杂过程，特别是与微叶片技术的出现有关提供了新的认识。此外，本研究表明，对断裂翼的分析可以对东北亚LGM之前和前后的微叶片和微叶片状纵向碎屑生产进行适当的技术评价。
Until recently, several hypotheses on the origin(s) and dispersion of microblade technology in Northeast Asia have been presented and discussed. Although various definitions of microblade and bladelet have been proposed in diverse geographic and chronological contexts, several researchers may agree that the pressure knapping technique for microblade production plays a paramount role in the process of significant changes in lithic technology and human behaviours between marine isotope stages (MIS) 3 and 2. One of the main topics in the study of microblade technology in Northeast Asia is establishing a systematic and reliable method for identifying microblade knapping techniques that are quantitatively verified. This paper attempts to present a more improved method for identifying microblade knapping techniques by dealing with the analysis of fracture wings which are the reliable indicators of the crack velocity. The focus of this paper is on identifying obsidian microblade-like debitage knapping techniques in the Last Glacial Maximum (LGM) assemblage of Kawanishi-C in Hokkaido, Northern Japan. The results of fracture wing analysis show that the microblade-like longitudinal debitage production at the Kashiwadai-C site was employed by not pressure but percussion techniques. This gives new insights into the diversity of microblade and microblae-like debitage reduction sequences in the LGM Hokkaido and complex process of significant changes in lithic technology, especially in relation to the emergence of microblade technology. In addition, this study shows that the analysis of fracture wings can allow appropriate technological evaluation of the microblades and microblade-like longitudinal debitage production in the period before and around the LGM in Northeast Asia.