ABSTRACT Although microliths are regarded as small standardized tools for complex composite technology, it is still not fully understood whether this schematic understanding developed in Old World prehistory can apply to the Late Pleistocene microblades in northeastern Asia. Here, referring to the definition of the Old World microliths, we explore the morphometric traits of the Late Pleistocene microblades in northeast Asia through an examination of the laminar blank production technology from the Last Glacial Maximum (LGM) microblade assemblage recovered from the Kashiwadai 1 site in Hokkaido, northern Japan. Metric and nonmetric data obtained from numerous laminar blanks reveal that microblades are comparable to bladelets without backing, as defined in the Old World records. The core reduction sequence reconstructed from the refitted specimen reveals that microblades are produced from blade core gradually reduced by careful core preparations, best labeled as the integrated laminar technology conceptually related to post-LGM bifacial microblade core technologies.

中文翻译：

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日本北海道柏和1的最后一个冰川最大微刀片

摘要尽管微石被认为是用于复杂复合技术的小型标准化工具，但仍旧无法完全理解旧大陆史前时期发展起来的这种示意图性理解是否可以应用于东北亚的晚更新世微刀片。在这里，参照旧大陆微石的定义，我们通过考察从柏第1站点回收的最后冰川最大（LGM）微叶片组合的层状空白生产技术，探索了东北亚晚更新世微叶片的形态特征。在日本北部的北海道。从许多层状毛坯获得的度量和非度量数据表明，如旧世界记录中所定义的，微刀片可与无支撑的小刀片媲美。